fluorite - the Proctor Family Trust Collection Website
Transcription
fluorite - the Proctor Family Trust Collection Website
THE HALIDE FAMILY THE FLUORITE AND HALITE (SALT) SPECIES: FLUORITE COMPOSED OF FLUORINE AND CALCIUM IN A 1 : 2 = CaF2 – OR SALT COMPOSED OF SODIUM AND CHLORINE IN A 1 : 1 RATIO = NaCL FLUORITE In almost all species the crystal colors are caused either by metal atoms or colored compounds trapped in the crystal lattice at formation. However, in contrast, the brilliant and unique dispersal of colors in the Fluorite crystals we all love so much are caused by imperfect crystallization at formation formation, which results in various empty electron shells, thus producing different energy levels which produce a kaleidoscope of colors. (see A Short Introduction duction to Chemistry in the introduction to this Proctor Family Trust Collection prospectus) FROM THE YAOGANGXIAN MINE CHINA: There are six spectacular Fluorite specimens featuring cube crystals in this Proctor museum collection from the famous Yaogangxian mine in China = one of the world’s most prolific and diverse mines for producing superb specimens. HALID-FLUO-1. (right) FLUORITE CUBES ON QUARTZ CRYSTALS WITH PURPLE INCLUSIONS IN THE CENTERS - YAOGANGXIAN MINE MINE: Here we see a perfect Quartz crystal al cluster measuring 5” wide by 4” deep, exhibiting ten Fluorite colorless cubes with bright purple centers. Not only is this extremely uncommon and aesthetic, but half the Fluorite cubes are interpene interpenetration twins. -Joe Budd photograph HALID-FLUO-2. (left) FLUORITE PURPLE CORNERS ON PALE GREEN CUBES – YAOGANGXIAN MINE,, CHINA: CHINA This second purple Fluorite specimen measures 3” wide by 3” high by 3” deep, and displays several interpenetration twins of cubed Fluorites. The T largest cube, 1.5” across, presents dark purple corners which creates an elegant display piece. Why do these cubes have purple corners and a the previous cubes have purple centers? Empty electron = energy levels!! levels -Joe Budd photograph HALID-FLUO-3. FLUORITE - DELICATE GREEN CUBES WITH BEAUTIFUL PHANTOMS INDICATING MULTIPLE GROWTH PHASES – YAOGANGXIAN MINE, CHINA: Specimen measures 2.5” by 2.75”. -Jeff Scovil photograph 87 FLUORITE CUBES (continued) HALID-FLUO-4. FLUORITE - LIGHT PURPLE CUBES, WITH INTERPENETRATION TWINS – YAOGANGXIAN MINE: Note the joints and the interpenetration twin planes of twinned cubes cubes. Specimen measures 2.5” by 2.5”. -Jeff Scovil photograph HALID-FLUO-5. FLUORITE – OCTAHEDRON PYRAMID CRYSTAL MADE OF ALL STEPPED CUBES – YAOGANGXIAN MINE, E, CHINA: This is a pyramid shaped octahedral Fluorite,, 3” wide and 1.75” high (looking like a stepped Mayan pyramid temple). This one-of-a-kind group is made up entirely of minute cubes with pre-octahedral, beveled led edges between the cube corners (best seen on the big top crystal) – and all the cubes have a dusting of micro Pyrite yrite crystals sprinkled on their surfaces. Because ecause octahedrons form at high temperatures and cubes form at low temperatures this is a unique and telling presentation. How ow could this sort of time capsule specimen imen have formed? Obviously at some intermediate temperature! Compare this picture with the next, somewhat similar, presentation presentation, which displays a complimentary crystallization. -Joe Budd photograph HALID-FLUO-6. FLUORITE – OCTAHEDRON ON QUARTZ, WITH MODIFIED CUBES ON THE PYRAMID CORNERS “BEAR’S HEAD” – YAOGANGXIAN MINE, CHINA: The specimen above iss another amazing Fluorite, Fluorite displaying an obvious pyramid shaped octahedral crystal on Quartz. Each of its pyramid points is occupied by a cube crystal, al, again, with each of its edges (between the cube corners) being beveled - a precursor trait to a modified cubooctahedron crystal. This specimen was probably formed at some intermediate temperature. Specimen measures 3.5” wide by 3.25” high. -Jeff Scovil photograph 88 FLUORITE CUBES (continued) HALID-FLUO-7. FLUORITE – ROSE, ROSE PINK-COLORED CLUSTER OF MANY INTERPENETRATION TWINNED CUBES, WITH MAGENTA BANDING (PHANTOMS) INSIDE: Here we see a stunningly beautiful, banded stack of closely packed interpenetration nterpenetration Fluorite cubes = a unique example (the only one the Proctors have seen) from the Annabel Lee mine, near Cave-In-Rock Cave city, (Hardin County) in southern Illinois near the Ohio River. All these Hardin county mines are now closed, abandoned and under water. This specimen measures 4” wide, 4” high by only 2.5” thick so it passes light easily to show off this most unusual magenta color banding. -Joe Budd photograph HALID-FLUO-8. FLUORITE - DARKEST PURPLE CUBES WITH INTERPENETRATION TWINS - BERBES, SPAIN: The famous mines at Berbes, Spain usually produced multitudes of specimens with small pale purple Fluorite cubes associated with superb white bladed barite. This unique nique specimen is probably the PRIMO specimen from Berbes, and it’s purple color makes it one of the best crytsals from any mine. Specimen measures 3.4” wide by 2” tall. -Jeff Jeff Scovil photographs HALID-FLUO-9. BLUE-GREEN GREEN FLUORITE: A rare color, with green phantoms from the Erongo Mountains in Namibia. Specimen measures 3.5” high by 3.5” wide. -Jeff Scovil photograph 89 FLUORITE CUBES (continued) HALID-FLUO-10. FLUORITE – PALE GREEN 3” CUBE PERCHED ON A FLAT MATRIX – DAL’NEGORSK, RUSSIA: This very sculptural, 3” green cube of gemmy Fluorite is perched on the very top edge of the matrix, which means the miners just plucked it off the wall rock. The few internal cleavage planes are an advantage to the viewer because they cause the light to refract and disperse beautifully. This piece was found in the 1980s in the Nikolai mine at Dal’negorsk, Russia, which is the most important of the five mines that make up the Dal’negorsk complex in far eastern Russia, in the vicinity of the giant Russian submarine base at Vladivostok. Acquired from a private collection. Specimen measures 5” wide, 6” tall and only 1.5” thick. –Jeff Scovil photograph 90 FLUORITE CUBES (continued) HALID-FLUO-11. FLUORITE – PURPLE CUBES – ELMWOOD MINE, CARTHAGE, TENNESSEE: On this masterpiece composition specimen, we see more than 20 gemmy purple Fluorite cubes dispersed in an isolated fashion (so we can better study their individual crystal shape). The white Dolomite matrix makes for a perfect color contrast so the crystals stand out better. Specimen measures 6” wide by 8” tall by 3.5” thick. -Jeff Scovil photograph 91 FLUORITE CUBES (continued) HALID-FLUO-12. FLUORITE- WATER CLEAR, PALE GREEN CUBES – XIANGHUALING MINE, CHINA: These amazing pale green gem crystals are so clear one could read a newspaper through them. In fact, we can even clearly see the texture of the green matrix underneath. Acquired from a famous private collection in Monaco, Europe. Specimen measures 4.5” wide by 2.75” high. -Jeff Scovil photograph 92 FLUORITE CUBES (continued) HALID-FLUO-13. FLUORITE – STACK OF PURPLE CUBES ON A SAW TOOTH EDGED GEMMY CELESTINE CRYSTAL – MUSQUEZ, MEXICO: Here we view a 3.75” high stack of small purple interpenetration twinned Fluorite cubes running up the center of a very sculptural Celestine crystal (an uncommon strontium sulfate species) measuring 6.5” high by 3.5” wide and only 3/8” thick (compare with SULF-ATE-CEL-2 in this collection). Because of color contrast, form, composition and perfection, we view here an intensely interesting specimen. Even the Celestine crystal is very different and superb for the species. FANTASTIC COMPOSITION AND AESTHETICS!!! -Joe Budd photograph 93 FLUORITE CUBES (continued) HALID-FLUO-14. FLUORITE PURPLE CUBES (WITH BACKLIGHTING) - OKARUSO, NAMIBIA: Specimen measures 4.5” wide by 4” tall. -Lynn Sim photograph HALID-FLUO-15. (below) FLUORITE – LUSCIOUS YELLOW CUBES WITH CHALCOPYRITE SPRINKLES ON TOP – CAVE-IN-ROCK CITY, ILLINOIS: Displayed here is a beautiful specimen of very uncommon and superb rich yellow Fluorite cubes ranging up to 2” across. ross. Small Chalcopyrite crystals (a copper, iron sulfide species) are seen on the surface of the cubes. From the Minerva #1 mine, Cave-in-Rock city,, Illinois. Specimen measures 5.5” wide, 5” tall and 2.5” thick. All these classic southern Illinois mines in Hardi Hardin n county are closed and underwater and lost forever as a specimen source. Acquired from the famous Ji Jim Minette collection. –Joe Joe Budd photograph 94 CUBO-DODECAHEDRON HALID-FLUO-23. FLUORITE: One could hardly expect to find better composition than seen here. A purple Fluorite cube perched on a white Calcite matrix; actually this is a rare cubo-dodecahedron crystal, recognized by the beveled edges between the cube points. From the second great Spanish Fluorite mine – La Collada in the same mountain range in Catalonia, Spain - only 50 km from the other great European Fluorite mine, at Berbes Spain. This specimen came from the famous Eric Asselborn collection in France, and only became available when he sold his entire collection (considered one of the top three in Europe). This masterpiece specimen measures 3.5” high by 4.5” wide. Please see the superb Berbes Fluorite (without matrix – HALID-FLUO-8) in this collection also considered to be the best Fluorite from Berbes. -Jeff Scovil photograph 95 FLUORITE OCTAHEDRONS HALID-FLUO-16. FLUORITE OCTAHEDRONS – TWO BRIGHT GREEN, PYRAMID SHAPED CRYSTALS = A BI-PYRAMID CRYSTAL WITH EIGHT FACES: This is reputed to be the finest large octahedron matrix specimen. Found at this unique Reimbasmask, Cape Province, South Africa deposit. Specimen measures 3.5” wide by 4” tall. -Jeff Scovil photograph 96 FLUORITE OCTAHEDRONS (continued) HALID-FLUO-17. FLUORITE– ROSE COLORED OCTAHEDRONS – SWITZERLAND: This magnificent 2” cluster of rose-colored, sharp octahedrons of Fluorite come from the most classic location: Goshenen Alp, Switzerland, dug by one of the intrepid Swiss strahlers (alpine diggers) decades ago. On the right side of the roadway just before you enter the St. Gotthard tunnel going into Italy from Switzerland, is a sign pointing upwards identifying the area called Goshenen Alp. Of all classic species, pink Swiss octahedral Fluorite crystals are among the most coveted and sought after by connoisseur collectors. The Swiss collectors consider these choice fluorites national treasures, and thus, seldom are they allowed to escape the country. Acquired, by trade, from the famous Dr. Neely collection in Tennessee. Specimen measures 3.25” high, and 3” wide. –Joe Budd photograph 97 FLUORITE OCTAHEDRONS (continued) HALID-FLUO-18. HALID FLUORITE – BI-COLOR – PURPLE AND GREEN OCTAHEDRONS – XIANGHUALING MINE, HUNAN PROVINCE, CHINA: Seen here is a magnificent 5” wide, 5” tall, and d 4” thick cluster of huge, 2” to 2.75” bi-colored, bi purple and green, octahedral Fluorite crystals; crystal remember that octahedrons form at high temperatures. Please compare the previous, previous classic rosecolored Swiss Fluorite (HALID-FLUO-17), (HALID side-byside with this bigger specimen. This magnificent matched pair displays 2” octahedral crystals of the two best color varieties!! The three contrasting, contrasting yet complimentary colors (rose, purple and green) are stunning together. together Also compare these to the green octahedrons HALID-FLUO-16. HALID -Joe Joe Budd photograph HALID-FLUO-19. FLUORITE – OCTAHEDRONS - GREEN AND PURPLE ON THE SAME SPECIMEN WITH THREE GROWTH PHASES – XIANGHUALING MINE, CHINA: Another of the most unique Fluorites from this immensely prolific and classic China Fluorite mine is this 6” wide and 4” high specimen featuring two colors (not bi-colored) of sharp (high temperature formation) octahedrons that have different compositions. There is a large green, textbook perfect octahedron on top with smaller purple octahedrons underneath, which obviously formed during different growth phases. This makes a spectacular presentation, but this assemblage has added clout because on the left side of it is the big green octahedron surrounded by a series of rarely seen, stepped or tiered, intermediate shaped, green cubes (of lower temperature formation). formation) These intermediate, juvenile cubes of Fluorite are on top of all the biggest, sharpest green octahedrons. octahedron They must have formed as the specimen cooled. With careful observation we can see th that each fine specimen tells a story of differing temperatures, pressures, the impurities and possibly different cooling rates present in the pocket during several formation stages. This recognition adds greatly to our awe and enjoyment of the specimen! If we can marvel over a specimen for its unique beauty, uty, color, form, composition, perfection or crystal sheen, heen, then we should own it. These are the criteria the Proctors have used to skim off the top fraction of the best of each species species. -Joe Budd photo 98 FLUORITE - 8-SIDED OCTAHEDRONS (continued continued) HALID-FLUO-20. FLUORITE – DARK PURPLE SINGLE OCTAHEDRON ON QUARTZ – FROM THE DE’AN MINE, CHINA: We see here a perfect, luscious purple and razor sharp, 8sided bi-pyramid octahedron of Fluorite on an etched out Quartz plate. These complete 8-sided octahedrons (if they were taken off the matrix to expose all eight sides) are very symmetrical. Specimen measures 3.25” by 2.75” and 1.5” tall (to the octahedral tip). -Joe Budd photograph HALID-FLUO-22. FLUORITE - GEM GREEN OCTAHEDRONS - FROM THE SOUTH AFRICAN DEPOSIT AT REIMBASMASK, CAPE PROVINCE: These two ssharp electric green octahedrons are balanced across from each other and are extremely aesthetic on their matrix. Specimen measures 3.5” high by 44” wide. -Jeff Jeff Scovil photograph photo 99 FLUORITE (continued) HALID-FLUO-25. FLUORITE - EXCEEDINGLY RARE, TAN-COLORED BALLS ON MATRIX - JALGAON, INDIA: This is one of the most unique Fluorite specimens ever found because the top ball is so translucent that it displays a partial cat’s-eye chatoyance. Additionally, no other Fluorite examples like this truly bizarre specimen were found in any other country, and only a handful was found at Jalgaon, India. In all the searching done by the Proctors, this was by far the best. Specimen measures 4.75” wide by 5.25” high. -Jeff Scovil photograph HALID-FLUO-24. FLUORITE - A PERFECT GREEN OCTAHEDRAL FLUORITE ON A MUSCOVITE MICA MATRIX - NAGAR VALLEY, PAKISTAN: Specimen measures 2” high by 3” wide; crystal is 1.5”. -Jeff Scovil photograph 100 FLUORITE – 14-SIDED CUBO-OCTAHEDRON OCTAHEDRON HALID-FLUO-26. FLUORITE – GREEN, 2” SINGLE, PERFECT, CUBO CUBO-OCTAHEDRON AHEDRON ON A QUARTZ QUAR MATRIX: Rarely does one find a 2” perfect perfect, 14-sided cubo-octahedron crystall sitting by itself on a pretty Quartz studded matrix as seen here. This is an amazing crystal flashing two perfect adjoining and triangular faces alternating with two perfect cube faces, making up the front faces on this textbook perfect cubo cubo-octahedron octahedron. Please carefully compare this 14-sided sided Fluorite crystal with the 14 14-sided cubo-octahedral Fluorite - HALID-FLUO FLUO-28. This specimen is rare because of the perfectly balanced size ratios between both the triangular and square faces. If this 14-sided 14 crystal was off matrix and complete, we could count eight triangular octahedral faces and six square cube faces. From Orange River, Namibia. The Quartzes are 0.5” to 1” 1”, and the specimen measures 3.75” .75” wide and 4” tall. -Joe Budd photograph 101 CUBO CUBO-OCTAHEDRONS (continued) HALID-FLUO-28. FLUORITE – CLUSTER OF DARK PURPLE 14 14-SIDED = CUBO-OCTAHEDRONS AHEDRONS ON QUARTZ - DE’AN MINE, CHINA:: Here we see a 7” Quartz base, and perched on top is a 3” high mound of perhaps erpenetration twins of luscious purple cubo-octahedrons octahedrons with surprisingly even color dispersal. thirty very translucent interpenetration With close observation, on, we can see there are no octahedral (triangular) faces here – but all cube, pentagon and hexagon (six sides) faces,, which are most diagnostic for some cubo cubo-octahedrons. These crystals are quite different from the 2”, single, green cubo-octahedron edron we just saw (HALID (HALID-FLUO-26). A cube crystal has six faces and an octahedron has eight faces, so these two shapes combined = 14 faces. The Proctors bought this specimen from the mine owner himself (who knew very well what fine specimens sold for in the U.S.) U.S.), and this miner said it wass the best group he found at his mine. Although the miners and mine owners sometimes lie in order to romance the stone,, the Proctors tend to believe this statement because of the many they looke looked at, this is the best one they have seen.. Found at the famous De’an De’a mine, China. To see a perfect, isolated,, single crystal of this rare color color, see specimen HALID-FLUO--29 below. Also, please see Galena SUL-GAL-9 to view a perfect 66-sided cubo-octahedral face. -Joe Joe Budd photograph HALID-FLUO-29. FLUORITE – PURPLE, SINGLE, CUBO CUBOOCTAHEDRON ON QUARTZ - DE’AN MINE MINE, CHINA: Here we see an absolutely perfect, erfect, exceedingly dark purple single 14-sided cubooctahedron sitting on top of a thin Quartz “c “cone”. The De’an mine is noted for producing the best examples of these rare purple cubo-octahedrons. Note the hexagonal face on the top left as well; this hexagonal face is one of the diagnostic finger prints to identify a classic cubo cubo-octahedral crystal. Specimen measures 4” by 4” and 3” high. -Jeff Scovil photograph 102