geological report wind claims watson lake mining district tootsee
Transcription
geological report wind claims watson lake mining district tootsee
GEOLOGICAL REPORT WIND CLAIMS WATSON LAKE MINING DISTRICT TOOTSEE RIVER AREA, YUKON TERRITORY LOCATION B.T.S. 105-B-1 LATITUDE: 6 0 Degrees 03' 3 7 " LONGITUDE: 130 Degrees 13' 05" BEAVER RESOURCES IIC. 157 ALEXANDER STREET VANCOUVER, BRITISH COLUMBIA PETER A - CHRISTOPHER, Ph-Ds, P - Eng. PETER CHRISTOPHER & ASSOCIATES IBC. 3707 WEST 3 4 t h AVENUE VANCOUVER, BRITISH COLUMBIA V6N 2K9 FEBRUARY 21, 1983 TABLE OF CONTENTS Page Summary Introduction Location and Access Topography Claims and H i s t o r y R e g i o n a l Geology Mineral Deposits i n t h e Area D j s c u s s i o n o f t h e Moon C l a i m s C o n c l u s i o n s and Recommendations Cost Estimate Bibliography Certificate LIST OF ILLUSTRATIONS F i g u r e 1. Figure 2. Figure 3. 3A. Figure 4. L o c a t i o n Map C l a i m Map Regional Geology, Rancheria Area R e g i o n a l G e o l o g y , Midway A r e a S t r a t i g r a p h i c C o l u m n , Midway Deposit Area. 2 3 6 12 14 TABLE T a b l e 1. T a b l e 2. Summary o f Moon C l a i m D a t a L e g e n d F o r F i g u r e 3A. 4 13 Summary: T h e Wind Claim G r o u p is i m m e d i a t e l y n o r t h o f the M i d w a y property of Regional R e s o u r c e s Ltd. (Amax-Procan option), and has a geological setting similar to that of the nearby Midway silver-lead-zinc-barite deposits. C o n s i d e r i n g t h e proximity of the Wind C l a i m Area to the Midway deposit, a basic (Stage I) exploration program of prospecting, mapping, rock and s o i l g e o c h e m i s t r y and g e o p h y s i c s is h i g h l y recommended for the property. T h e S t a g e I program is estimated to cost $48,000. I f the S t a g e I program is successful 'in defining strong anomalies or silver-lead-zinc o r barite m i n e r a l i z a t i o n , t h e n a S t a g e I 1 t r e n c h i n g and A 500 meter diamond drilling program w i l l be warranted. diamond drilling program is estimated to cost $120,000. Introduction: - 3 0 mineral claims are situated immediately T h w Wind 1 north of the Midway property of R e g i o n a l R e s o u r c e s Ltd. (Amax-Procan option) and seven miles north of the "Midway" silver-lead-zinc deposit. D i s c o v e r y of the " M i d w a y " silver-lead-zinc-stratiform mineral deposit near the Tootsee R i v e r in 1981 by R e g i o n a l R e s o u r c e s h a s e n c o u r a g e d re-evaluation of a d j a c e n t a r e a s w i t h s i m i l a r geology for silver-lead-zinc-barite deposits. T h e Wind c l a i m s c o v e r s o m e o f the f a v o u r a b l y situated adjacent ground. Figure I compiled by B. J. P r i c e (1983) s h o w s t h e l o c a t i o n of t h e W i n d property w i t h r e s p e c t to the M i d w a y and o t h e r significant deposits i n N o r t h e r n B r i t i s h C o l u m b i a and the Yukon Territory. T h i s r e p o r t r e v i e w s the g e n e r a l geological setting of the Wind Claims and o t h e r silver-lead-zinc p r o p e r t i e s in t h e a r e a , and o u t l i n e s a recommended initial (Stage I) program and a follow-up (Stage TI) program for e v a l u a t i n g t h e e c o n o m i c potential of the Wind Claim Area. Snow conditions prevent a useful examination of the property a t this t i m e , and therefore the S t a g e I program is based on the writer's e x p e r i e n c e w i t h other S e l w y n B a s i n and K e c h i k a T r o u g h exploration programs. Cost estimates are based on a minimum use of helicopter time which will require careful planning. C a s u a l h e l i c o p t e r s a r e a v a i l a b l e at W a t s o n L a k e or periodically at Rancheria (13 miles), S w i f t R i v e r (64 k m ) and the Pine Lake air strip (55 km). Location and Access: (Figures I & 11) T h e Wind Claims are situated between 2.4 k i l o m e t e r s a n d 5.6 k i l o m e t e r s e a s t o f t h e T o o t s e e R i v e r about 115 kilometers (72 miles) west of Watson L a k e , Y.T. and 2 0 kilometers (12.4 m l l e s ) e a s t o f R a n c h e r i a , a small settlement o n the Alaska Highway. The Tootsee L a k e R o a d , a gravel access r o a d w h i c h l e a v e s the A l a s k a H i g h w a y a t m i l e post 7 0 1 p r o v i d e s four wheel drive access to within 3 kilometers of the Wind Claims a n d t h e A l a s k a H i g h w a y p a s s e s w i t h i n 6 k i l o m e t e r s of the claims. Equipment and supplies c a n b e s h i p p e d t o w i t h i n 3 k i l o m e t e r s , but helicopter support will be required because crossing t h e T o o t s e e R i v e r o r R a n c h e r i a R i v e r m a k e s r o a d c o n s t r u c t i o n c o s t s p r o h i b i t i v e f o r a n initial exploration program. F u e l a n d accommodation are available at Rancheria, and most supplies and s e r v i c e s a r e a v a i l a b l e a t W a t s o n L a k e , Y.T. w h i c h is s e r v i c e d by d a i l y jet flights from Whitehorse and Vancouver. Topography: T h e Wind Claims lie between 1 0 8 5 meters (3560 feet) and 1512 meters ( 4 9 6 0 feet) w h i c h g i v e s t h e c l a i m a r e a a m o d e r a t e relief of 4 2 7 meters. T h e c l a i m s a r e disected by a small westerly flowing tributary of the Tootsee River. The Claim area is mainly above timber line. Claims and History: T h e W i n d Claims with grant numbers pending were recorded in February, 1 9 8 3 . T a b l e I p r o v i d e s a s u m m a r y o f p e r t i n e n t claim data. S n o w cover prevented field c o n f i r m a t i o n of claim data obtained f r o m c l a i m m a p 105-B-1 ( D e p a r t m e n t o f N o r t h e r n A f f a i r s a n d N a t u r a l Resources). T h e maximum possible ground coverage of 20.9 hectares (51.65 a c r e s ) per c l a i m w i l l be reduced if claims overlap or posts are placed at less than maximum p e r m i s s i b l e s p a c i n g . Field checking c l a i m post l o c a t i o n s a n d p l a c i n g o f i d e n t i t y t a g s i s required and should be part of the 1983 field program. T h e w r i t e r s u s p e c t s t h a t t h e a r e a h a s b e e n s t a k e d in the past, but has been u n a b l e t o f i n d a n y r e c o r d s o f p r e v i o u s explorat Lon work. 1 S c a l e Ln f e e t F I G U R E 2 . C L A I M MAP F O R WIND AREA, BEAVER RESOURCES I N C . DATA FROM GOVERN3ENT CLAIM 1 0 5 - B - 1 AND S T A K I N G P L A N S . F I E L D CHECKING REQUIRED STAKED TOM 1 - 3 4 FAIRLADY ENERGY I NC WIND 1-30 CLAIMS LYDIA 1 - 20 JANTAR RESOURCE CORPORATION BEAVER RESOURCES I N C . ( STAKED Y a BUTLER MTN M I D CLAILIS REGIONAL RESOURCES (AMAX-PROCAN MOON 1 STAKED - OPTION) HOT CLAIMS 28 OROTEK RESOURCE CORPORATION (k"*Wo P. A Christopher L PAC FEB .- 1983 .. 130; 1300120' 9 , 130° 15' / 1 - Table T S u m m a r v o f Wind C l a i m D a t a C l a i m Name Wind Wlnd Wind Wind Wind - 1 3 11 19 27 2 10 - 18 - 26' 30 - - R e c o r d No. Pending Pending Pending Pending Pending Date Recorded Work D u e Staker Feb. 9/83 Feb. 9/83 Feb. 9/83 Feb.10183 Feb.10183 Feb. 9/84 Feb. 9/84 Feb. 9/84 Feb.10/84 Feb.10184 L i n d a MacDonald Andy D u s c h e n e Terry Stelmaschuk C h r i s Guichon Pete Stoffer T h e a r e a o f i n t e r e s t i s s i t u a t e d o n the east flank of the Cassiar batholith which e x t e n d s o v e r 3 0 0 k m s o u t h e a s t e r l y f r o m W o l f L a k e m a p s h e e t i n t h e Y u k o n t o t h e K e c h i k a map area in British Columbia. I n the Jennings River and C a s s i a r - M c D a m e m a p a r e a s a n d t h e s o u t h part o f Wolf Lake area the eastern flank is underlain by Paleozoic r o c k s f r o m C a m b r i a n to C a r b o n i f e r o u s in age and separable into two or more contrasting assemblages, some of which are b e l i e v e d t o b e " a l l o c t h o n o u s " (i .e. deposited elsewhere and moved into place along flat lying faults) (Gabrielse and Mansy, 1980). Rocks are described by Poole (Map 10-1960) and by Gabrielse (GSC Paper 68-55, 1968) ; b r i e f d e s c r i p t i o n s o f t h e m a p p e d units are summarized below: Units 1 and 2: (Lower Cambrian) Unit 1 consists of b i o t i t e s c h i s t s , q u a r t z i t e , m a r b l e a n d s k a r n , w i t h a r e a s o f e x t e n s i v e s i l l s , dykes and irregular bodies of pegmatites, particularly near the contact with the Cassiar batholith. U n i t 2 c o n t a i n s q u a r t z i t e , slate and phyllite, quartz grft and fine pebble conglomerate. Adjacent to the b a t h o l i t h t h e rocks are hornfelsed. Unit 3: (Lower Cambrian) T h i s u n i t , w h i c h is host to numerous lead-zinc-silver showings in the area, contains grey limestone, grey to green argillite and slate, and dolomite. The unit is converted to skarn adjacent to the batholith. Unit 4: (Middle Cambrian to Silurian) Slates, p h y l l i t e s a n d l i m e s t o n e , b u f f t o d a r k g r e y , w i t h d o l o m i t e and d o l o m i t i c 1 imestone partly converted to skarn forms a unit which is difficult to separate from units 2 and 3. Unit 5: (Ordovician-Silurian) T h i s u n i t c o n t a i n s m a i n l y q u a r t z i t e s , dolomitic siltstone a n d thin-bedded s h a l e a n d l i m e s t o n e , a n d i s p r o b a b l y equivalent to u n i t 4 in the adjacent J e n n i n g s R i v e r m a p sheet. McDame Group-Unit 6: T h e McDame Group, dark, fetid, dolomites and limestones with abundant f o s s i l d e b r i s , f o r m s a d i s t i n c t i v e m a r k e r u n i t . D o l o m i t e ( i n t r a f o r m a t i o n a l ? ) b r e c c i a is c o m m o n and white vuggy dolomite may r e p r e s e n t reefoid a c c u m u l a t i o n s o f fossils, representing shoals in a shallow platform environment. Fossil e v i d e n c e indicates that the McDame Group is Middle Devonian in age. Lower Svlvester G r o u ~- Unit 7b: According to G a b r i e l s e (1968) " t h e c o n t a c t o f t h e M c D a m e G r o u p w i t h the o v e r l y i n g S y l v e s t e r G r o u p i s a l m o s t T h e l o w e r part o f t h e u n i t is invariably a fault fine-grained, black, locally graphitic slates and phyllitea, with grey to black bedded and ribbon cherts. The upper part c o n t a i n s a r g i l l i t e s , interbedded with sandstones, grit and conglomerate. Cherty, fine-grained limestone may be present near the top of the unit. ." Several barite-silica "exhalite" horizons are present within the lower Sylvester G r o u p i n t h e v i c i n i t y o f t h e " M i d w a y " property. S t r a t g r a p h y i n t h i s a r e a , within the Sylvester Group is described in detail by Hylands (1981), and is shown o n the following page, w i t h a diagrammatic stratigraphic section (Figure 4). U D D ~Svlvester ~ G r o u ~- Units 7a & 8: Massive volcanic rocks, including flows, breccias, tuf is and agglomerates with aggregate thickness of over 1 5 0 0 feet form U n i t 7 ; w i t h u l t r a m a f i c b o d i e s (Unit 8) c u t t i n g t h e volcanics. T h e volcanics include b a s a l t , d a c i t e and rhyolite flows and coarse-grained equivalent intrusive rocks a r e s a i d t o e x i s t fn t h e u n i t ( G o r d e y , et a 1 1982). Most rocks are pervasively altered to "greenstones", m a k i n g t h e m appear mass tve. Cassiar Batholith: T h e northwesterly trending elongate Cassiar Batholith underlies the most rugged terrain in the map area. Much o f the batholith consists of massive, homogeneous biotite quartz-monzonite, grey in color and medium to c o a s e g r a i n e d in texture. Other varieties include muscovite quart z-monzonite, a u g e n g n e i s s e s , and later pegmatitic dykes. Alteration and shearing are commonly associated features -sericitization, c h l o r i t i z a t i o n a n d a l b i t i z a t i o n are prevalent in some areas. O t h e r g r a n i t o i d r o c k t y p e s occur in the Jennings River map sheet but are not within the scope of this report. Dvkes: Greenstone dykes are common in the batholith and also within the adjacent Paleozoic r o c k u n i t s . Some of the dykes are k n o w n to be lamprophyres. Structure: T h e S y l v e s t e r " a l l o c t h o n " i s c h a r a c t e r i z e d by a b r o a d , northwesterly-trending synclinal f e a t u r e c o m m o n l y r e f e r r e d t o a s the M c D a m e S y n c l i n o r i u m . T h i s feature parallels the contact o f t h e C a s s i a r b a t h o l i t h i n a g e n e r a l w a y b u t i s m o d i f i e d by smaller scale folds conforming to embayments f n the batholith, as is seen near the Marbaco property. Tight f o l d i n g in C a m b r i a n - S i l u r i a n rocks in present near Tootsee Lake. Strong northwest to northeast faulting has also affected the area, as is seen in the accompanying geological map (figure 3). Most faults are s t e e p , n o r m a l f a u l t s s u c h a s the n o r t h - t r e n d i n g , e a s t e r l y d i p p i n g f a u l t c u t t i n g through the western portion o f the Midway property. Faults are marked by depressions and green dykes, some of which are schistose, indicating continued movement. L o w a n g l e faults, probably related to the hypothesized sole f a u l t ' o f the a l l o c h t h o n , a r e k n o w n to c u t t h e S y l v e s t e r s e q u e n c e in the v i c i n i t y o f t h e M i d w a y d e p o s i t (Hylands, 1981) A s t r o n g s h e a r z o n e t r e n d s n o r t h w e s t through the Cassiar batholith west of Tootsee L a k e , and along this feature p e r v a s i v e shearing and mylonization occurs over widths of 2 miles. T h e S y l v e s t e r allocthon appears to pinch out in the vicinty o f the A l a s k a H i g h w a y i n W o l f L a k e m a p a r e a ( F i g u r e 3). Major faults mark the northern limit at Spencer Creek. South of Rancheria R i v e r , a b r o a d a r e a o f S y l v e s t e r a n d M c D a m e g r o u p r o c k s is t h o u g h t t o r e p r e s e n t t h e s a m e mineralized units as at the Midway and Marbaco properties. Mineral Deposits in the Area: T h e m o s t s i g n i f i c a n t development in mineral exploration in the southern Y u k o n a n d n o r t h e r n B.C. w i t h i n t h e l a s t f e w y e a r s h a s been the discovery of stratiform silver-lead-zinc mineralization within "exhalite" massive sulphide and silicalbarite horizons in the lower portion of the Mississippian-Devonian Sylvester group. T h e d i s c o v e r y , by Regional Resources Ltd. and partners Amax of Canada a n d P r o c a n E x p l o r a t i o n L t d . h a a r e s u l t e d in a n e x t e n s i v e s t a k i n g p r o g r a m a n d re-evaluation of geological data concerning mineral s h o w i n g s a d j a c e n t t o t h e " M i d w a y " property. Several other silver-lead-zinc deposits not a s yet of e c o n o m i c s i z e or g r a d e , o c c u r i n c l o s e p r o x i m i t y , i n C a m b r i a n to M i d d l e D e v o n i a n strata, and also in high grade veins within the Cassiar Batholith. Several of these d e p o s i t s a r e d e s c r i b e d briefly, following a description of the Midway property. V e i n m i n e r a l i z a t i o n o c c u r i n g a t t h e Silver T i p showing is discussed under a separate heading. Midway Deposit: T h e " M i d w a y " d e p o s i t , staked by Regional Resources in 1980 and drilled in 1981 and 1982 was discovered as a r e s u l t o f c a r e f u l e x p l o r a t i o n o f the previously explored Silverknife (Silver Tip) silver-lead-zinc showing, following i n v e s t i g a t i o n o f s t r o n g l y anomalous silt sample results in the 1980 regional geochemical survey. Six drill holes in 1981, totalling 8 5 3 meters indicated the presence o f 3 mineralized z o n e s dipping southeasterly at about 3 0 degress. The lowermost zone observed only in drill core over lies the M c D a m e l i m e s t o n e and v a r i e s f r o m 1 t o 1.5 m e t e r s t h i c k a n d c o n t a i n s from 2.65 to 2 3 . 3 9 % c o n b i n e d l e a d - z i n c a n d f r o m 1 . 2 4 to 2 2 . 5 9 ozlton silver. T h i s z o n e is l o c a l l y absent and may grade l a t e r a l l y i n t o s i l i c e o u s , pyritic, exhalite. Four o i the 6 holes encountered a "dry cavernous o p e n i n g 1 5 c m t o 1 5 0 c m wide" near the McDame-Sylvester contact. T h e l o w e r z o n e c o n s i s t s o f w e a k l y b e d d e d to b r e c c i a t e d pyrite, g a l e n a , s p h a l e r i t e a n d c a r b o n a t e F r a g m e n t s i n a n argillaceous matrix. zone f o u n d in outcrop, occurs T h e m i d d l e , o r " D i s c o v e r y " -about 7 0 meters stratigraphically a b o v e the lower z o n e , within argillite and sandstones. This zone varies from 0.5m to 11.2 m e t e r s i n t h i c k n e s s a n d r a n g e s in g r a d e f r o m 4.56 t o 13.36 percent combined Pb-Zn and 1.26 to 5.03 oz/ton silver. T h e U p p e r Z oneis about 10-20 meters above the Discovery zone, ranges in thickness from 0.40m t o 3.17111 i n t h i c k n e s s a n d h a s c o m b i n e d l e a d - z i n c g r a d e s r a n g i n g f r o m 2.62% t o 13.15% and silver grades. D r i l l i n g o f 18 a d d i t i o n a l h o l e s in 1 9 8 2 h a s p r o v e n 2.75 13.3 o z / t o n n e m i l l i o n t o n n e s (3.05 M. t o n s ) a v e r a g i n g s i l v e r , 1 2 % z i n c a n d 6.1% l e a d w i t h m i n o r b u t p o s s i b l y economic quantities of tin, bismith, gold and copper. ( R i c h a r d s o n , G r e e n s h i e l d s , Canada Ltd. - research report). C o m p o s i t e s a m p l e s f r o m c o r e f r o m 8 h o l e s a v e r a g e d 0.023 oz/ton gold, 0.35% copper, and 0.14 % tin. T h e deposit is n o w k n o w n to e x i s t o v e r a n a r e a 2 , 0 0 0 f e e t (600m) s q u a r e through a geological section of 1 0 0 ft. (30m). Definition of the deposit is not complete. The exhalite horizons can be traced for at least 1 4 k m along strike o n the s o u t h w e s t part o f t h e p r o p e r t y a n d s i m i l a r h o r i z o n s a r e seen 1 0 k m to the northeast. O n the northeast side of the property a b a r i t e e x h a l i t e 4 m - t h i c k h a s b e e n traced for 5 k m in float and outcrop. The mineralized horizons are believed t o r e p r e s e n t s u l f i d e rich exhalations deposited o n the floor of a rift-controlled basin u p to 14 k m wide (Hylands, 1981). T h e s h o w i n g s r e s p o n d w e l l to standard geochemical soil and silt sampling techniques; the Discovery showing h a s a b r o a d c o i n c i d e n t P b - Z n - A g - B a a n o m a l y , and seven additional areas h a v e c o i n c i d e n t Pb-Zn-Ag a n o m a l i e s . Airborne EM and m a g n e t o m e t e r s u r v e y s w e r e f l o w n a n d ground EM and gravity surveys were done. Two pulse EM anomalies and one vector E M anomaly were verified by drilling. An idealized stratigraphic section prepared by D.G. McIntyre f r o m c o m p a n y p l a n s is r e p r o d u c e d i n f i g u r e 3 A a n d a s t r a t i g r a p h i c s e c t i o n u s e d by J. H y l a n d s f o r t h e M i d w a y property is reproduced in Figure 4. Amy (Fosco) Showings: T h e A m y d e p o s i t o c c u r s approximately 1 8 miles south of the Tom claims a n d t w o m i l e s n o r t h w e s t o f t h e n o r t h e n d o f T o o t s e e Lake. The showings were discovered in 1948 and staked by Hudson Bay Exploration a s the Gem Group. In 1949, 8 d i a m o n d d r i l l h o l e s w e r e completed totalling 2,935 feet, and seven deep trenches traced the mineralized z o n e f o r 5 5 0 The f e e t w i t h m a x i m u m w i d t h 7 f e e t i n D D H - 2. mineralization, galena, tetrahedrite, sphalerite, pyrrhotite and ankerite occurs a s a replacement zone in limestone along a limestone-argillite contact and near the s u r f a c e t r a c e o f the granite contact. The zone occupies a shear zone striking n o r t h 5 5 - 6 5 d e g r e e s w e s t a n d d i p p i n g 60 d e g r e e s southwest . F u r t h e r work o n t h e p r o p e r t y i n 1 9 6 4 by R a n c h e r i a Mining Company consisted of soil surveys, magnetometer s u r v e y s a n d underground development. I n t h e u n d e r g r o u n d w o r k i n g s , the vein in a 6 6 foot section averaged 5.9 feet wide and assayed 27.4 oz/ton s i l v e r , 7.5% Zinc and 7.5% lead. Further drifting along the vein in 1965 disclosed a vein l e n g t h o f a t l e a s t 4 1 9 f e e t . Additional bulldozer trenching o n other geochemical anomalies disclosed other veins. Diamond drilling to test continuity c o n s i s t e d o f 2 4 holes totalling 7 , 5 0 0 feet. T h e claims lapsed in 1 9 6 9 and in 1970 the property w a s r e s t a k e d by F o s c o M i n i n g L i m i t e d . Further undergound work and drilling was done a n d a f e a s a b i l i t y s t u d y w a s d o n e b y D o l m a g e , C a m p b e l l a n d A s s o c i a t e s , w h o c o n c l u d e d that the depostt contained the following tonnages (diluted): - Category Tons Measured 11,400 Drill indicated 31,100 Gelogically inferred 68,400 TOTAL: 110,900 -ZnX 3.74 6.26 6.80 6.31 1.78 no grade assigned ~g(0~1t) 17.10 PbX Flgure 3a. G e n e r a l i z e d g e o l o g y I n v i c l n l t y o f t h e Midway s h c m l n g , J e n n l n g s R l v e r map-area; g e o l o g y and l e g e n d mod1 f l e d from Gabr l e l s e ( 1 9 6 9 ) . (Source,W I n t y r e , D.G, 1982. BCDiul Pa_- 82-1) "LA9LC 11. Leqend for Fiqure 3a. CRETACEOUS CASS IAR BATHOLITH Q u a rt z monzon 1 te, Kqr g r a n o d i o r lt e MISSISSIPPIAN AND LATER S e r p e n t i n 1 te, Mu dun I te, per l d o t it e UPPER DEVONIAN TO MISSISSIPPIAN SYLVESTER GROUP (UPPER Greenstone, DMv agg l a n e r a t e ; dacltlc tuff; minor chert, rnetadiorlte MIDDLE TO UPPER DEVONIAN SYLVESTER GROUP (LWER) S l a t e , a r g l l l l t e , c h e r t , s i lt s t o n e , c h e r t - a r e n l t e , p o b b l e conglomerate, ml n o r l lmestone uD greywacke, chert I4 IDDLE DE VON IAN McDAME GROUP Dol m i t e , mD f o s s l 1 l f e r o u s 1 imestone CAMBRIAN, ORDOVICIAN, AND SlLUFilAN €05 Do1 m i t e , d o l m l t l c sandstone and s l l t s t o n e , g r a p t o l i t l c b l a c k shale, p l a t y s l l t s t o n e , c a l c a r e o u s phyl 1 I te, phyl 1 l t i c I lmestone skarn, h o r n f e l s , I lmestone, q u a r t z i t e Symbol s ..................................A'.................................................................... .d ................................................... .............................................................................. .......................................... 0 ................................................ + ....................................... ..................................................................... High-angle fault; b a l l on d o w n t h r o ~ n b l o c k A n t i form Contact: Road d e f inod; assumed Stratabound b a r l t e Stratabound rnasslve s u l p h l d e Mineral o c c u r r e n c e I n c a r b o n a t e r o c k s Exhal l t e h o r l z o n v v v vI UPPER SYLVESTER D MV UNlT 3 b LOWER SYLVESTER uD UNlT 30 EXHALITE - BARITE ,SILICI METRES UNlT 2 b UNlT 20 ____i_ - - UNlT Ib UNlT lo CXHALlTt - BARITE, SILICA Mb Ma [Source: ! ? y l a n d s , J. 1 9 8 1 ) STRATIGRAPHIC S E C T I O N NOVEMBER 1981 T h e c o n s u l t a n t s f u r t h e r s t a t e d t h a t "A c o m p a r i s o n b e t w e e n t h e grade of d r i l l i n t e r c e p t s near the underground workings and assays from channel samples taken from t h e d r i f t suggests t h a t the estimated grade i n t h e d r i l l indicated c a t e g o r y i s p r o b a b l y low by a n unknown b u t s i g n i f i c a n t amount. The r e s e r v e e s t i m a t e o u t l i n e d i n t h i s r e p o r t s h o u l d the ultimate potential of the n o t b e c o n s i d e r e d as l i m i t i n g deposit". Bench s c a l e m i l l t e s t s produced a concentrate acceptable t o custom smelters. A d e t a i l e d underground e x p l o r a t i o n program was recommended, but immediate production was not recommended a t t h a t t i m e b e c a u s e o f t h e weak p r i c e f o r s i l v e r ($1.29 t o $2.57 p e r o u n c e ) . I n 1973, a d d i t i o n a l s u r f a c e work was d o n e , c o n f i r m i n g sampling completed on t h e 4450 l e v e l , and a 1400 f o o t c r o s s c u t and 220 f e e t o f d r i f t i n g done on t h e 4200 f e e t level. A s e c o n d e s t i m a t e o r o r e r e s e r v e s w a s d o n e b y C h a p m a n Wood a n d G r i s w o l d i n 1 9 7 4 , who c o n c l u d e d t h a t t o t a l o r e r e s e r v e s now w e r e + 1 4 0 , 0 0 0 t o n s a s f o l l o w s : Category Measured D r i l l indicated Total Inferred Total Tons 18,122 61,727 79,849 59,326 140,000 G r a d e ( ~ g / o z / t ) PbZ 13.88 3.27 9.76 2.70 10.70 2.84 no g r a d e a s s i g n e d 7.29 5.63 6.03 The c l a i m s were a c q u i r e d by Marbaco Mines L t d . i n 1980 a l o n g Marbaco w i h a d j a c e n t c l a i m s owned b y D. S c h e l l e n b e r g . p e r f o r m e d geochemical surveys and trenching which i n d i c a t e d a d d i t i o n a l zones could be p r e s e n t . A t p r e s e n t m e t a l p r i c e s ( $ 1 5 / o z Ag, 2 8 d / l b P b , 4 9 t l l b Z n ) , g r o s s metal value per t o n of o r e (1974 r e s e r v e d a t a ) i s $ 2 3 5 .SO. (The e s t i m a t e d grade of d r i l l indicated reserves is probably s t i l l low compared w i t h measured r e s e r v e s , a s i n t h e 1971 calculations). Few r e c e n t a s s a y s e x i s t f o r g o l d b u t s e v e r a l samples t a k e n from 1949 t o 1967 c o n t a i n 0.01 t o 0.02 oz/ton. Prospects are considered encouraging for d i s c o v e r y additional mineralized zones at this property. of S o m e s i m i l a r i t i e s e x i s t b e t w e e n the A m y d e p o s i t a n d t h e lower most "exhalite" zone at the Midway deposit: 1 > Both deposits contacts; occur near limestone - phyllite 2) Solution caves are found adjacent to both deposits. 3) Mineralogy and reserve grades are similar. 4) Mineralization deposits. is parallel with bedding in both T h e A m y d e p o i t is d e s c r i b e d i n m o s t r e p o r t s a s a s t r i k e fault system with characteristics of quartzs i d e r i t e - s u l p h i d e replacement of limestone in a Shear zone. However, the possibility exists that the deposit represents a r e m o b i l j zed s t r a t i f o r m e x h a l i t e deposit, with potential for augmentation of reserves along strike and dip. Silver Tip Showing (Midway Property) The Silver Tip showing, a vein or replacement d e p o s i t , is s i t u a t e d t h r e e m i l e s n o r t h e a s t o f Tootsee Lake. Extensive work was done on the property from 1 9 5 6 t o 1 9 6 8 by s e v e r a l l a r g e c o m p a n i e s including Conwest, Canex, Noranda, Bralorne Mines and Peerless O i l a n d G a s . I t n o w f o r m s part o f t h e Midway property of Regional Resources and partners. The area is underlain by t h i c k - b e d d e d M c D a m e l i m e s t o n e o f D e v o n i a n a g e , o v e r l a i n by Mississippian-Devonian Sylvester Group phyllites. Gossan zones and g a l e n a f l o a t a r e found in several zones trending north-easterly. The largest gossan zone, No. 2 , ranges from 15 to 6 5 feet w i d e a n d is 7 0 0 feet long and was reported to average 5.7 oz/ton silver, 6.2% lead and 2.9% zinc. Individual p i e c e s o f g a l e n a f r o m t h e z o n e a s s a y a b o u t 1 5 0 o z / t o n s i l v e r and 70% lead (BCMM Ann. Report 1968, p.25-33). The same zone intersected in several drill holes consisted of "frozen mineralized gossan". No. 4 z o n e , i n t e r s e c t e d in t h e u p p e r a d i t w a s s a m p l e d o v e r 3 8 f e e t by t a k i n g muck f r o m 1 7 5 c a r s , t h e a v e r a a g e w a s 13.84 o z / t o n s i l v e r , a n d 15.4% l e a d . The a v e r a g e of the c h a n n e l s a m p l e s a l o n g 40 f e e t i n the west d r i f t w a s o v e r f i v e f e e t , 0.02 o z / t o n g o l d , 12.0 o z / t o n s i l v e r , and 14.5% lead. T h e same zone, intersected in the .lower adit, approximately 6 5 0 feet down the d i p of the fault z o n e , is almost completely oxidized and r e s e m b l e s "soft brown sugar'. This almost completely leached material assays 0.2 ozlton silver, 0.1% lead and 4.5% zinc. M i n e r a l i z e d zones such as the above are localized o n strong faults and fractures in the McDame l i m e s t o n e , a l o n g the c r e s t o f a n a n t i c l i n e a n d a p p e a r to b e a l m o s t completely o x i d i s e d to d e p t h s e x c e e d i n g 6 0 0 f e e t f r o m t h e s u r f a c e . A p a r t f r o m the gossan z o n e s , considerable pyrite with minor sphalerite a n d g a l e n a o c c u r s i n the h o l e s d r i l l e d i n t h e phyllite, (presumably Sylvester Group), and minor galena and sphalerite occur in quartz and calcite veins and in 1 imestone. T o t h e writer's knowledge, fresh vein material from which t h e g o s s a n s r e s u l t e d h a s n o t b e e n s e e n o n t h e property. T h i s v e i n - r e p l a c e m e n t d e p o s i t , as yet untested by Regional R e s o u r c e s h a s s t r o n g s i m i l a r i t i e s t o t h e Amy d e p o s i t o f Marbaco Resources. M i n e r a l o g y and grades are similar and probable o r i g i n by r e p l a c e m e n t a l o n g f a u l t z o n e s i n l i m y h o r i z o n s s e e m s almost certain. Considering the presence of mineralization over a vertical range of over 6 5 0 f e e t a n d 5 f o o t mining w i d t h , t h e e v e n t u a l d e v e l o p m e n t o f e c o n o m i c reserves on this portion of the property seems certain. YP Property: T h e YP p r o p e r t y , a d j a c e n t t o t h e F l o a n d L y d i a c l a i m s , situated 4 k m south of mile 701 o n the Alaska Highway, owned by Flame Petro Minerals Ltd. and currently being explored by Butler Mountain Resources Ltd., has several oxidized vein or replacement zones in limestone of unkown, but probable Cambrian age. Some solid galena was hand-cobbed and shipped from the property in the 1960's. Several large gossan zones, with residual argentiferous galena, are thought to represent oxidized replacement zones of galena-tetrahedrite-sphalerite a n d o t h e r s u l p h i d e s in s i d e r i t e g a n g u e , c o m p a r a b l e w i t h z o n e s present o n t h e S i l v e r T i p s h o w i n g o f t h e M i d w a y property. Geochemical surveys, geologic m a p p i n g , t r e n c h i n g a n d d r i l l i n g w e r e r e c o m m e n d e d by B.J. Price in 1980. The property was reviewed in 1982 by Glen E. White, P.Eng., w h o s u g g e s t e d pulse E M s u r v e y s i n a d d i t i o n t o g e o l o g y a n d geochemistry,with a 2-stage program with $40,000 expenditure in Stage 1 and $110,000 in Stage I 1 (drilling). T h e program is expected to proceed in 1983. A + B Claims: T h e A + B d e p o s i t , s i t u a t e d 6 km n o r t h o f t h e A l a s k a h i g h w a y , i s owned b y D e l p h i R e s o u r c e s L t d . a n d w a s e x p l o r e d b y SEREM LTD. S t r o n g l y f o l d e d l i m e s t o n e and p h y l l i t e s of Cambrian o r Devonian age a r e h o s t t o S t r a t i f o r m massive z i n c - l e a d - s i l v e r zones, h i g h l y i r r e g u l a r i n shape. The b e s t i n t e r s e c t i o n t o date h a s been i n h o l e 3 (1962) d r i l l e d by S c u r r y Rainbow O i l s Ltd.: 39 f e e t o f 1.66 o z / t o n s i l v e r , 1.47% l e a d and 8.32% z i n c . Cross cutting quartz c a l c i t e v e i n s have s i g n i f i c a n t s c h e e l i t e content. Sue Claims: were T h e S u e c l a t m s , 5 km s o u t h o f t h e L y d i a c l a i m s , o r i g i n a l l y e x p l o r e d by Dupont o f C a n a d a E x p l o r a t i o n a s t h e JCS 1 and 2 c l a i m s . Although most a t t e n t i o n was paid t o molybdenum/tungsten m i n e r a l i z a t i o n a t t h e c o n t a c t o f t h e C a s s i a r b a t h o l i t h w i t h s k a r n i f i e l d Kechika Group r o c k s , lead-zinc-silver m i n e r a l i z a t i o n was n o t e d i n a q u a r t z i t e breccia. T h e b r e c c i a i s b r i e f l y d e s c r i b e d by E c c l e s ( 1 9 8 0 ) as a p o s s i b l e p i p e . One s a m p l e f r o m t h e b r e c c i a a s s a y e d over 10 oz/ton s i l v e r . Noranda Claims: Silver-lead-zinc mineralization is a l s o present on t h e Root, T o o t , B o o t , L o o t a n d Road c l a i m s , n o r t h a n d w e s t o f T o o t s e e R i v e r ( s e e f i g u r e 2). M i n e r a l i z a t i o n is present i n quartz veins within the Cassiar batholith, but is a l s o present i n carbonate breccias. Strong lead-z inc geochemical anomalies may b e a s s o c i a t e d w i t h l a m p r o p h y r i c d y k e s , a r e l a t i o n s h i p a l s o s e e n o n t h e Ag c l a i m s . F r e e r Creek Areas Numerous s i l v e r - l e a d - z i n c veins occur near Freer Creek, a p p r o x i m a t e l y 1 0 km w e s t o f t h e F l o a n d L y d i a c l a i m s . On t h e Luck p r o s p e c t , b e t w e e n 3 , 5 0 0 a n d 4 , 0 0 0 f e e t e l e v a t i o n o n t h e Creek, a r g e n t i f e r o u s galena, s p h a l e r i t e and c h a l c o p y i t e a r e found i n q u a r t z v e i n s i n t h e Cassiar batholith quartz monzonfte. The v e i n s a r e a s s o c i a t e d w i t h a lamprophyre d y k e , a n d a r e o u t l i n e d b y EM-16 s u r v e y s a n d g e o c h e m i c a l s o i l s a m p l i n g . Hand c o b b e d m a t e r i a l w a s s h i p p e d f r o m o n e o f t h e A 25 ton shipment o c c u r e n c e s on t h e I D A p r o p e r t y i n 1970. 0.6% a s s a y e d 8 0 o z l t o n s i l v e r , 56% l e a d , 5% z i n c and copper (Report by D. P a r e n t , 1973). T h e v e i n s a r e p r e s e n t l y b e i n g e x p l o r e d by Klondyke Silver Mines Ltd. based in Whitehorse, Yukon Territories, w h o p l a n t o s t a r t a n e x p l o r a t i o n a n d d e v e l o p m e n t program, early in 1983. (Whitehorse Star, January 4, 1983). Bear and Ae Claims: T h e B e a r claims were staked by Douglas Schellenberg in 1978 and explored by Dupont Exploration in 1979. T h e Ag 1 a n d 2 c l a i m s w e r e a l s o s t a k e d by S c h e l l e n b e r g , i n 1 9 8 2 . The claims are situated 2 km west of the Marbaco s i l v e r - l e a d - z i n c d e p o s i t a n d a r e s u r r o u n d e d by t h e F l y Claims. / T h e o n l y r e c o r d o f w o r k d o n e o n t h e Bear and Ag claims is contained in a n unpublished report by L. K. E c c l e s i n 1 9 7 9 . W o r k d o n e by D u p o n t i n c l u d e d l i n e c u t t i n g f r o m t h r e e well-cu t baselines, geological m a p p i n g , t r e n c h i n g a n d s o i l sampling. A total of 5 8 5 samples were collected and analyzed for molybdenum, t u n g s t e n , l e a d , z i n c a n d s i l v e r . T h e s a m p l e s o u t l i n e d s e v e r a l molybdenum-tungsten targets and one main lead-zinc-silver a n o m a l y . T h e Mo-W a n o m a l i e s w e r e t r e n c h e d u n c o v e r i n g 2 stratiform skarn bodies u p to Z meter wide and 10 meters apart. A l t h o u g h m i n e r a l i z e d w i t h s c h e e l i t e , molybdenite, powellite and galena, the showings are considered uneconomic. Trenching in the Pb-Zn-Ag anomaly revealed a narrow high-grade vein in limestone mineralized with galena, sphalerite and ruby s i l v e r (pyrargyrite), spatially associated with a dark g r e e n , p o s s i b l y l a m p r o p h y r i c d y k e . Assays from its occurrence (selected) are as follows: No. - - Schellenberg (1983 personal communication) suggests that the mineralization may be stratiform and may e x t e n d o u t w a r d from the Ag claims into the Fly claims. Discussion of t h e Wind C l a i m s : T h e W i n d C l a i m s a r e m a i n l y u n d e r l a i n b y map u n i t s 6 a n d 7 b (Poole e t al., map 1 0 - 1 9 6 0 ) which c o r r e l a t e w i t h t h e f a v o u r a b l e D e v o n i a n a g e , McDame a n d S y l v e s t e r g r o u p s w h i c h h o s t t h e Midway d e p o s i t o n t h e a d j o i n i n g p r o p e r t y o f Regional Resources. Unit 6 includes g r e y and black d o l o m i t i c rocks and u n i t 7b i n c l u d e s a r g i l l i t e , s a n d s t o n e , conglomerate and c h e r t . Strong n o r t h e a s t and northwest f a u l t s a r e s h o w n o n map 1 0 - 1 9 6 0 i n t h e Wind C l a i m a r e a . G e o l o g i c a l S u r v e y o f C a n a d a m a p p i n g o f t h e Wind C l a i m a r e a needs refining f o r d e t a i l e d property work, b u t i n d i c a t e s a s i m i l a r g e o l o g i c a l s e t t i n g t o t h e n e a r b y Midway d e p o s i t . T h e presence of strong f a u l t s t r u c t u r e s needed t o channel mineral bearing solutions is an encouraging future. The w r i t e r h a s n o t f i e l d examined t h e Wind C l a i m a r e a , b u t h a s worked on s e v e r a l s i l v e r - l e a d - z i n c - b a r i t e deposits i n northern British Columbia and the Yukon Territory. Stratabound d e p o s i t s t e n d t o occur i n c l u s t e r s (eg. Anvil Camp; M a c M i l l i a n P a s s ; H o w a r d s P a s s ; A k i e R i v e r A r e a ) w i t h h i g h e r s i l v e r c o n t e n t s g e n e r a l l y found i n d e p o s i t s h o s t e d by D e v o n i a n R o c k s ( e g . Tom, J a s o n a n d C i r q u e d e p o s i t s ) . Search f o r a b a s e m e t a l d e p o s i t on t h e Wind C l a i m s i s w a r r a n t e d because of the proximity of t h e Midway d e p o s i t , a stratabound deposit with high silver values in a similar sedimentary sequence of Devonian age. E x p l o r a t i o n o f t h e Wind C l a i m a r e a s h o u l d s t a r t w i t h c a r e f u l g e o l o g i c a l mapping and p r o s p e c t i n g . The f o l l o w i n g key prospecting g u i d e s should be c a r e f u l l y recorded: 1. Section thickening associated with growth f a u l t s ; 2. Tntraformational breccias, turbidites occuring because relief; 3. Siliceous 4. Stringer mineralization with values; 5. A c h a r a c t e r i s t i c porous o r pumice-like rock of white colour is associated with b a r i t i c outcrops t h a t have leached carbomate o r sulphides; - conglomerates and of f a u l t controlled p y r i t i c areas near f a u l t s ; possibly higher copper 6. Vegatative k i l l zones are associated with baritic horizons; and 7. Siliceous or baritic exhalite deposits should be carefully checked for lead content (galena). S i l t a n d s o i l s a m p l e s s h o u l d be c h e c k e d f o r l e a d , z i n c , c o p p e r , silver and barium. Lead is generally the best i n d i c a t o r for s t r a t a b o u n d b a s e m e t a l d e p o s i t s but o t h e r elements may help in defining zoning. Conclusions and Recommendations: Considering the proximity o f the Wind Claims to the exciting n e w M i d w a y s i l v e r - l e a d - z i n c - b a r i t e d i s c o v e r y a n d similar geological settings, a basic (Stage I) e x p l o r a t i o n p r o g r a m of mapping, soil and rock geochemistry, geophysics and trenching is highly recommended. I f t h e S t a g e I p r o g r a m is s u c c e s s f u l i n l o c a t i n g m i n e r a l i z a t i o n or strong anomalies then a follow-up (Stage 11) trenching a n d d i a m o n d d r i l l i n g p r o g r a m w i l l be w a r r a n t e d . I f broad or poorly defined anomalies result from S t a g e I, t h e n a S t a g e I 1 p e r c u s s i o n drtlling program should be considered. Geological mapping should be conducted a t a b a s e m a p s c a l e o f 1 : 5 0 0 0 . w i t h more detailed grid mapping as required. Soil s a m p l e s s h o u l d b e c o l l e c t e d a t 25 m e t e r i n t e r v a l s a l o n g lfnes as normal to geological strike a s possible. Rock and soil samples should be analysed for C u , P b , Z n , Ag a n d B a . L e a d is u s u a l l y t h e b e s t i n d i c a t o r e l e m e n t , but t y p i c a l zoning from an iron rich core to z i n c - c o p p e r t o l e a d - z i n c to silver-lead and marginal barite should be considered when evaluating geochemical data. E l e c t r o m a g n e t i c a n d m a g n e t i c r e a d i n g s s h o u l d be c o l l e c t e d along all soil lines to allow for comparison of results. C o a t Estimates Stage - I - Prospecting, Geological, Geophysical and Geochemical ~eologist/~anager Assistant/Prospector sampler elpe per Geophysical Crew 2 0 days @ 2 0 days @ 2 0 days @ (includes 1 0 days 300 ea 150 ea 100 ea Magnetometer & EM) ~ o b i tzation/demob l Vehicle 2 days @ 100 ea Materials (Camp, sampling, lines etc.) 80 days @ 40/day ~ o a r d / C a m pcosts Base Map Preparation Geochemical Analyses 500 soils @ 12 ea (Pb, Z n , A g , C u , Ba, analyses) 5 0 rocks @ 2 0 ea Helicopter 1 0 hours @ 5 0 0 ea Report Preparation Contingency Total Stage I Stage I 1 - Drilling and Trenching Cat (trenching, drill sites & moves) Helicopter 2 0 hours @ 500 ea Diamond Drilling 500 meters @ 1 8 0 ea all inclusive: drilling, engineering, geochem etc. Contingency Total Stage I 1 Total Stage I 61 I 1 90,000 $108,000 12,000 $120,000 $168,000 BIBLIOGRAPHY R.C. Annis & D.A. E.D. Black (1967), Cranstone et at (1978), A Survey of Known Mineral D e p o s i t s in C a n a d a t h a t are not being mined. M.R. 1 8 1 D e p a r t m e n t E n e r g y , Mines and Resources. Carnsell, George E., (1949) Geochemical and Engineering E v a l u a t i o n Report. Yukon Silver properties, S p e n c e r C r e e k G r o u p s , Caribou L a k e G r o u p . A s s e s s m e n t R e p o r t for P a c i f i c Grant Steel Ores Ltd. Geological and Diamond Drilling Report, Glen 1 - 3 8 Mineral Claims. Aseessment Report No.44. BCDM. Canadian Mines Handbook, Northern Mines Press, 1971-1980 R e p o r t o f E x a m i n a t i o n , F l o and L e o c l a i m g r o u p s . L i a r d M.D. for F o s c o Mining Ltd., Assessment Report f l 3 5 6 6 . K.J. Christie (1971), Report on the Andrew Mineral Claims, Watson Lake Mining District, Yukon Territory. Private Report. Eccles, L.K. (1980) Geological and Geochemical Report JCS 1 and 2 c l a i m s , L i a r d M.D. A s s e s s m e n t Report t7870 Eccles, L . K . (1980) Geological and Geochemical report Bear, B e a r 2 , J M , J R , T M , BP c l a i m s etc. Canada Exploration Dupont of unpublished report. George Cross Newsletter, 1981, 1982. various news releases made by Regional Resources. Gabrielse, R. Gordey, S.P. (1969) et a 1 (1982) Geology of the Jennings River Map-area GSC Paper 68-55 37pp. . Strategraphy and Structure of Sylvester A l l o c t h o n , S o u t h w e s t M c D a m e Map-Area, Northern British Columbia. . . G e o l o g i c a l Geochemical and Geophysical S t u d i e s , A m y c l a i m group. Rancheria M i n i n g c o m p a n y Ltd., B C D M A s s e s s m e n t Report #734. F. Holcapek (1974), Report o n the Tam 1 - 2 0 mineral claims. Liard M.D. for B a l m o r a l M i n e s Ltd. (NPL). Assessment Report #4973. Stuart S. Holland (1968), Silver Tip claims. Liard M.D. Summary o f G e o l o g y and E x p l o r a t i o n . B.C. Department Mines Annual Report, P.24-33. Hylands, J. (1980) Midway property, Assessment R e p o r t No. 9912. BCDM McArthur, R.G., Geochemical and Geological Report o n Root 1 Mineral Claim. Assessment Report No. 7673. BCDM. (1979) McArthur, R.G. (1979) G e o l o g i c a l M a p p i n g and D i a m o n d D r i l l Report, Toot 1 , T o o t 2 , and L a k e 8 - 1 1 M i n e r a l C l a i m s , A s s e s s m e n t Report No. 8125, BCDM. McArthur, R.G. Geological and Geochemical Report, Root 1, Boot, Loot and Road Claims Assessment Report No. 8566.BCDM (1979) McDonald, G. (1979) Geological and Geochemical Report, Toot 1 , T o o t 2 , and L a k e M i n e r a l C l a i m s . Assessment Report No.7257. BCDM. McInytre, D.G. M i d w a y Occu rence Geological Fieldwork, 1982. BCDM Paper 1982-1, pp. 162-166. (1982) Mineral Industry Reports, D.I.A.N.D., Yukon Territory, 1973 - 1977. B.J. Price (1975), Brief Report o f the A + B c l a i m s n e a r R a n c h e r i a , YT. P r i v a t e r e p o r t for Delphi Resources Ltd. Price, Barry J. (1980) Geological Report, Y P Silver-Lead P r o s p e c t , W a t s o n L a k e M.D., Yukon Territory. Unity Gold Resources, unpublished Company Report.