May 2015 - Central Brevard Rock and Gem Club
Transcription
May 2015 - Central Brevard Rock and Gem Club
Brevard Gems Web address: www.centralbrevardgems.org NEWSLETTER FOR CENTRAL BREVARD ROCK AND GEM CLUB REMINDERS: Next regular meeting is May 7th at 6:00 p.m. at the Merritt Island Library. Board Meeting is Monday, May 4th at 7:00 p.m. INSIDE THIS ISSUE: Meeting Minutes 2 Picnic Pictures 3 Workshop Pictures 3 Just for Kids 4 Calendar 5 Gem & Mineral Shows 6 May’s Mineral 7 Open Shop Hours: Sun. 1-4 PM; Wed. 9 AM-12 PM, 1-4 PM, and 6-9 PM; and Thurs. 6-9 PM. (except on meeting nights) V O L U M E 4 , I S S U E President’s Message I wish to thank all those who attended and assisted at the annual picnic and auction on Saturday, April 18. It did not rain, we had a delicious variety of food, and members were generous in their response to the auction. It also helps to reduce some of our inventory at the workshop and make room for future donations. Thank you to Bill, Cheryl and Rick, Tom and Eivor, Emily and Josh. Members have been producing some beautiful work in recent classes and open shop. We always hope they will bring their finished work to show and tell so the rest of us can appreciate them. 5 Our meetings are on the first Thursday of every month at 6 p.m. at the Merritt Island Library on Courtenay Ave (Rte. 3), Merritt Island, across the road from the Merritt Island High School. There are no meetings in July and August. Please see the class schedule inside. Sign-up sheets will be available at the May 7 meeting. At the meeting ask Bill about Gem ID and wax carving for casting, ask Bill or Craig about faceting, ask Lucy about fused glass and beading, ask John about casting or cold connections work with copper, ask Tom about wirewrap, or ask Michele about cutting opals or wirewrap. Shop open hours are listed under classes. Shop address is on next to last page. We recommend new members start with cutting cabochons which you can do at any open shop. If you prefer to start with metal work, ask John about cold connections. Faceting instruction will Remember our Veterans M A Y 2 0 1 5 continue to be available at Wednesday morning open shop. Silversmithing and cabbing are taught by supervisors at open shop sessions. Remember our next meeting will be May 7, 6 p.m., at the Merritt Island Library. Bill will show a DVD entitled “Gemstones of America”. You will find our website at: www.centralbrevardgems. org. Michele Huntington 2015 President NOTE: Workshop will be closed on Sunday, May 26th for Memorial Day VOLUME 4, ISSUE 5 PAGE 2 Meeting Minutes CBRGC General Meeting—April 2, 2015 Michele called the meeting to order at 1800 hours at the Merritt Island Library. Pledge of Allegiance Approval of minutes for March 5, 2015 as published in the March newsletter was requested by Michelle and approved by the general membership present. 26 members were present. Treasurer’s report was submitted by Eivor Brown and filed for audit. Membership report was presented by Michelle as Sara arrived after meeting had started. Membership total is 90 members for 2015. Show 2016 is scheduled for February 6-7 at Kiwanis venue. No other updates per Roz. Workshop report: Workshop committee met March 29, 2015 at 4 PM. Craig reviewed Genie 1 and tightened the belt. Genie 3 had a hose leak which was fixed. No bids were received for the Lortone saw/grinder. The 3 drum tumbler sold for $80.00 . Other surplus equipment listed in the newsletter will be auctioned at picnic and rocks sold at $3.00 per lb. Current shop hours are Sunday 1-4, Wed. 9-12, 1-4, 6-9, and Thurs. 6-9. Assistance with cabbing, metal or silversmithing, and any other projects will be provided during open shop as possible. Class Schedule: Bill will teach Faceting 9-12 am Weds mornings. Bill will teach wax carving Sat mornings 9-12 through April. Michelle and Roz will teach Intermediate wirewrap on Tues evenings 6-9. John and Mario will teach cabbing on Tues evenings from 6-9. Sign-up sheets are available for classes. Roz will collect a $10 fee when classes are signed up for as a deposit for the first class and to hold your place in class. Members are encouraged not to wait for a class to learn to cut cabochons, silversmithing, chain making, or fused glass. They can come into the open shop to learn and find out what materials are needed for just $5.00. Shop supervisors are still being sought. New Business: Cheryl Ostman has volunteered to function as Picnic Coordinator for Picnic/ Auction on April 18th at KARS Park. Roberta will complete the audit for 2014. Roz continues to collect aluminum cans toward shop revenue. Club mugs are available at the meeting for $5.00 each. Club tote bags will be available at shop for $3.00 each. No new status on cookbook. Announcements: SFMS Federation website is afms.org/sfms. Their newsletter is the Lodestar in which members can receive by signing up via email. There will be a SFMS Meeting in Melbourne in September 2015. Details will be available as received from SFMS in the coming months. SFMS has suspended the stamp program so we are no longer collecting stamps. A break was taken for refreshments and Mario selected four raffle prize winners. Bill Dewey presented a DVD “All that Glitters” regarding gold mining in North Carolina which was informative and well received by the members present. Meeting was adjourned at 1925 hours. BREVARD GEMS VOLUME 4, ISSUE 5 PAGE 3 Picnic Pictures Workshop Pictures Norma’s Pendant Pam Faceting Pam’s Bracelet BREVARD GEMS Tom & Carol’s Cabochons VOLUME 4, ISSUE 5 PAGE 4 Just For Kids The Rock Cycle Rocks are the most common material on Earth. They are naturally occurring aggregates of one or more minerals. Rock divisions occur in three major families based on how they formed: igneous, sedimentary, and metamorphic. Each group contains a collection of rock types that differ from each other on the basis of the size, shape, and arrangement of mineral grains. The rock cycle is an illustration that is used to explain how the three rock types are related to each other and how Earth processes change a rock from one type to another through geologic time. Plate tectonic movement is responsible for the recycling of rock materials and is the driving force of the rock cycle. From Mineralogy4Kids.com BREVARD GEMS VOLUME 4, ISSUE 5 PAGE Calendar BREVARD GEMS 5 VOLUME 4, ISSUE 5 PAGE Gem & Mineral Shows May 3-4, 2014: North Charleston, SC Lowcountry Gem & Mineral Society Annual Jewelry, Gem, Mineral, and Fossil Show, “Art by Nature”. Location: Charleston Area Convention Center; Exhibit Hall A; 5000 Coliseum Drive, North Charleston, SC 29418. Hours: Sat. & Sun 10-5. Directions: I-26 East to I-526 West. Take Exit 16 (first exit), stay in right lane, and turn left onto International Blvd. Turn right at the second stop light and you will be facing the convention center. Follow the road to the left to the parking lot. FREE admission and FREE parking; hourly door prizes, club hospitality table, demonstrations, fossil dig, geode cracking. Contact Karen Havenstein of Charleston, SC at (843) 795-2956; e-mail: [email protected]; Web site: www.lowcountrygemandmineralsociety.org May 9 -11, 2014, Marietta, GA 46th Annual; The Georgia Mineral Society's 2014 Mother's Day Weekend Gem & Mineral Show; Over 30 Dealers; Free Parking; Free Admission; Door Prizes (Special Door Prize for Students! (Win a Great Prize for Yourself and for Your School!)); Cobb County Civic Center, 548 Marietta Parkway, Marietta, GA 30339 May 9 Friday 1000 to 1800, May 10 Saturday 1000 to 1800, May 11 Sunday Noon to 1700 Exciting Auction Saturday at 1300 May 23 - 25, 2014, Gulfport, MS Harrison County Gem & Mineral Society, Inc.'s 35th Anniversary Gem, Mineral and Jewelry Show; Courtyard Marriott; 1600 E. Beach Blvd., Gulfport, MS; Fri. 10-6, Sat. 10-6, Sun. 10-4; adults $5, children (10 and under) free with adult; demonstrations, displays, Stump the Expert, hourly door prizes; contact Karen Johnston at (228) 467-5465; or e-mail: johnstonkaren@bellsouth or Kathleen Becnel at [email protected]. 6 VOLUME 4, ISSUE 5 PAGE 7 May’s Mineral— Fairburn Agate What Is A Fairburn Agate? Agates, in nodules and geodes, are some of the most popular varieties of silica. Agate forms under sedimentary conditions. Whitlock (1946) states as an analogy that the quartz varieties are like six-sided snow crystals, and agates are like rounded icicles of freezing water. Agates consist of alternating layers of fibrous chalcedony with circular to semicircular layers, patterns, or bands like rings of targets. These layers may be composed of different thicknesses and colors. The layers are usually concentric and parallel to the walls of the rock cavity in which they are deposited. Fairburn agates are formed in this way. Fairburn agates are noted for their strikingly contrasted, thin bands of wonderful natural colors (Sanborn, 1976). Roberts and Rapp (1965) state that the color patterns are generally yellowish-brown with narrow opaque white bands, or dark red with white bands. However, another beautiful combination shows salmon-pink bands alternating with white bands. Other colors included in these agates are black, yellow, grayish-blue and milky-pink. These agates were originally named after a prolific locality 10 miles east of Fairburn, South Dakota, in the southern Black Hills area. According to Roberts and Rapp (1965), Fairburn agates occur in a broad elliptical belt extending from Creston in Pennington County, South Dakota, to near Orella in Sioux County, Nebraska, with the maximum width approaching 15 miles near Red Shirt, South Dakota. According to Fritzsch (S.D. School of Mines and Technology, personal communication, 1993), the area is more restricted (Figure 1). The Fairburn agate fields cover thousands of acres of very stony land and most of it is rugged terrain, well decorated with cactus, weeds, and cedar trees (Zeitner, 1964). Physical Properties of Agate Chemical Formula SiO2 - Silicon dioxide Crystal Structure Cryptocrystalline - microcrystalline aggregate (trigonal) Color All colors, multicolored and banded Luster Waxy to dull Specific Gravity 2.60 - 2.7 Cleavage None Mohs Hardness 6.5—7 Refractive Index 1.530 - 1.540 Transparency Translucent to Opaque What Is The Value Of Agate? The Fairburn agate was designated as South Dakota's state gemstone on February 11, 1966. In the literature, Fairburn agates are reported as quite scarce, and highly prized by collectors (Campbell and Roberts, 1985). The price of a Fairburn agate ranges up to $150, depending on the size and quality of the geode (Eric Fritzsch, Geology Museum, South Dakota School of Mines and Technology, personal communication, July, 1993). As with other agates, a larger Fairburn agate is not necessarily a better-quality agate. Agates are primarily used as decorative pieces, as mineral specimens, and in lapidary work. Information from: Northern State University (http://www3.northern.edu/natsource/EARTH/Fairbu1.htm) and Minerals.net VOLUME 4, ISSUE PAGE 5 8 Club Purpose: The purpose of this club is to foster interest in and to promote knowledge and appreciation of minerals, gems, fossils, and the earth sciences. We also disseminate information and instruction in the lapidary arts and the utilization of precious metals in our crafts. These purposes are accomplished through regular meetings with informative programs, workshops, study groups, and field trips. OFFICERS AND BOARD OF DIRECTORS Officers: President: 1st Vice President: 2nd Vice President: Secretary: Treasurer: Directors: Emily Holston Roz Mestre Tom Brown Lucy Caracoglia Michele Huntington Bill Dewey Sara Fellows Cheryl Ostman Eivor Brown 2016 2016 2015 2015 (321) 799-8536 (321) 453-5594 (321) 453-6901 (321) 890-7530 (321) 635-6572 [email protected] [email protected] [email protected] [email protected] [email protected] Shop Location: 407 Imperial Blvd, Unit D Cape Canaveral, FL (Imperial is located off A1A just south of the Port) Member of Southeast Federation of Mineralogical Societies, Inc. - www.amfed.org/sfms/ Affiliated with the American Federation of Mineralogical Societies - www.amfed.org Club Fundraising We need a Fundraising Coordinator to bring in some cash! Do you have an idea for raising money? Would you be willing to lead our efforts? Please contact Michele Huntington at [email protected] Don’t forget—The club collects soda-type cans. Bring your cans to the shop during open workshop hours OR to the monthly meeting. NOTE: We are no longer collecting stamps. Mary MacLaughlin, Editor (321) 322-7907 [email protected] Deadline for items for June issue is May 20th. BREVARD GEMS VOLUME 4, ISSUE 5 PAGE 9