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LL587 - Quartz var. Ametrine $ 750 Anahi Mine, La Gaiba Mining District, Santa Cruz, Bolivia cabinet - 11.8 x 4 x 3 cm ![]() ![]() ![]() ![]() Large transparent crystal of Ametrine (Quartz that is part Amethyst and part Citrine). It has typical etched form with a flat faces on the termination. Color zones of purple and yellow can be sieen inside this transparent crystal. There are two small dings otherwise this is perfect and one of the better examples I've seen. Ex. Bob Reynolds collection.
LL647 - Labuntsovite $ 50 DeMix Quarry, Mont St. Hilaire, Quebec, Canada thumbnail - 2.2 x 1.5 x 1 cm ![]() ![]() ![]() Prismatic red crystals of Labuntsovite in a small vug on matrix. The label indicates an 'unknown #5' is also present. Ex. Ex. Chuck Trantham collection.
LL335 - Churchite $ 50 Virginia, USA thumbnail - 3 x 2 x 1 cm ![]() ![]() ![]() Small, fibrous white to yellow Churchite crystals on matrix. Ex. Chuck Trantham collection.
LL297 - Kentrolite $ 40 Big Chief Mine, Hillsboro, Sierra Co., New Mexico, USA thumbnail - 2.5 x 2 x 1.5 cm ![]() ![]() ![]() ![]() Black Kentrolite crystals on matrix. Kentrolite is a rare lead and manganese silicate mineral. Ex. Chuck Trantham collection.
LL662 - Olivenite $ 300 Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA miniature - 3.8 x 3 x 1.5 cm ![]() ![]() ![]() Densely clustered crystals of Olivenite on matrix from the now defunct Majuba Hill Mine. Deep forest green crystals cover much of the matrix. There are some chipped crystals along the edges but the vast majority are perfect. This is an uncommonly rich example for the mine.
LL657 - Chalcophyllite $ 250 Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA small cabinet - 5.5 x 4 x 2 cm ![]() ![]() ![]() Blue green crystals of Chalcophyllite on matrix from the now defunct Majuba Hill Mine. Good crystals are present on both the front and back sides of the matrix.
LL678 - Amethyst $ 180 Las Vigas, Vera Cruz, Mexico small cabinet - 5.9 x 3.5 x 2.5 cm ![]() ![]() ![]() ![]() ![]() Pair of glassy, transparent Amethyst crystals. Complete all around and undamaged, simple elegance.
LL675 - Quartz with Glaucophane inclusions $ 120 Mount Tamalpais, Marin Co., California, USA small cabinet - 8 x 2 x 2 cm ![]() ![]() ![]() Double-terminated Quartz crystal with inclusions of blue/grey Glaucophane. These oddly shaped crystals were from a one time find about 10 years ago. Ex. Len Pisciotta collection.
LL672 - Clinoclase $ 400 Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA small cabinet - 7.5 x 5.5 x 4 cm ![]() ![]() ![]() Deep blue crystals of Clinoclase on matrix from the now defunct Majuba Hill Mine. The area of crystals is 4cm wide. An excellent example for the locality and of the species.
LL680 - Amethyst $ 160 Las Vigas, Veracruz, Mexico small cabinet - 7.4 x 6 x 3.5 cm ![]() ![]() ![]() ![]() ![]() Thin shards of Quartz and silica rich matrix hosting beautiful, undamaged Amethyst crystals. Main crystal is 4cm and double-terminated. Ex. Chuck Trantham and Al McGuinness collections.
LL709 - Neptunite with Benitoite $ 275 Gem Mine, San Benito Co., California, USA thumbnail - 2.7 x 2 x 1.5 cm ![]() ![]() ![]() ![]() Well terminated Neptunite crystal with two attached Benitoite crystals.
LL659 - Clinoclase on Cornubite Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA miniature - 4.7 x 3 x 2.5 cm ![]() ![]() ![]() Deep blue crystals of Clinoclase over green Cornubite from the now defunct Majuba Hill Mine. Both the front and back have great crystals.
LL738 - Benitoite $ 450 Gem Mine, San Benito Co., California, USA thumbnail - 2 x 1.8 x 1.3 cm ![]() ![]() ![]() ![]() Single Benitoite with 'textbook' form. Benitoite is the only mineral that crystallizes in the trigonal bipyramidal form, a form that was only hypothesized prior to it's discovery. Here you have a perfect example of the rare form (and a rare mineral). It looks almost like a crystal model. Thick and complete all around, with Crossite inclusions.
LL730 - Gahnite rough and cut $ 350 Kagoro, Kaduna State, Nigeria thumbnail - 0.6 x 0.6 x 0.6 cm ![]() ![]() ![]() Rough and cut set of transparent blue Gahnite. Gahnite is the zinc rich end member and one of the rarer species in the Spinel group of minerals. The crystal is a complete octahedron with one tiny chip on one tip, otherwise perfect and translucent to transparent internally. The gemstone is 4.5mm wide. These were first discovered in 2001 and are found mostly of industrial quality. Though they don't get very large, the color is spectacular. The GIA has written a nice article about these crystals published in Gems & Gemology, Fall 2019, Vol. 55, No. 3.
LL811 - Cuprian Adamite $ 900 Mina Ojuela, Mapimi, Durango, Mexico miniature - 4.5 x 4 x 3.5 cm ![]() ![]() ![]() ![]() Limonite vug filled with colorless Calcite and green Cuprian Adamite crystals. This is a particularly fine example sporting large, undamaged crystals of great beauty. The crystal group at the front left is 2cm in size, with an individual crystal 1.2cm in size. The vug itself is lined with black Plattnerite which provides a stunning backdrop to the green and white crystals.
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