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ST590 - Wulfenite $ 450 SOLD Los Lamentos, Chihuahua, Mexico thumbnail - 2.2 x 2 x 0.8 cm ![]() ![]() ![]() Pristine cluster of 3 Wulfenite crystals on matrix. The crystals are undamaged and the large main crystal is transparent with color zoning. Good from either side, a superb thumbnail.
ST593 - Bournonite on Chalcopyrite $ 750 SOLD Cavnic, Romania small cabinet - 9 x 8 x 3 cm ![]() ![]() ![]() ![]() ![]() ![]() Slightly irridescent blue metallic barrel-shaped crystals of Bournonite scattered across the surface of Chalcopyrite. Good sized showy specimen I've owned for about 25 years.
ST568 - Quartz $ 150 Mt. Tamalpais, Marin Co., California, USA small cabinet - 7 x 2.5 x 2.3 cm ![]() ![]() ![]() ![]() Undamaged single Quartz crystal with a sharp triangular termination and a grey phantom near the tip. An excellent Marin Co. Quartz.
ST592 - Rhodochrosite on Pyrite $ 225 SOLD Eagle Mine, Gilman, Colorado, USA thumbnail - 2 x 2 x 1.5 cm ![]() ![]() ![]() ![]() Lenticular pink Rhodochrosite crystals to 8mm atop bright Pyrite crystals.
ST544 - Chrome Tourmaline on Calcite $ 300 SOLD Landanai, Simanjiro District, Manyara Region, Tanzania small cabinet - 6 x 5 x 3.5 cm ![]() ![]() ![]() A thick 2cm double-terminated Chrome Tourmaline crystal set in a cluster of light yellow Calcite crystals. The cluster is attached to a small amount of Albite with Quartz and small black crystals, possibly garnets. Chrome Tourmaline is a chromium and vanadium rich Dravite.
ST556 - Quartz $ 250 Merelani Hills, Arusha, Tanzania miniature - 4.8 x 2.5 x 2 cm ![]() ![]() ![]() Thick, double-terminated Quartz crystal with a smaller single crystal rising up off one side. This crystal has a lot of character and reminds me a submarine for some reason. Complete all around and undamaged. Found at the Merelani Tanzanite mines.
ST569 - Calcite $ 800 Daye Copper Mine, Daye Co., Huangshi, Hubei, China small cabinet - 6.8 x 3.5 x 3 cm ![]() ![]() ![]() ![]() Large, double-terminated greenish yellow Calcite crystal. The crystal is internally transparent and nearly pristine. This is a crystal I've owned for about 20 years and was the best of a small lot available with one Chinese dealer at the Tucson mineral show.
ST566 - Quartz with inclusions $ 450 SOLD Jinkouhe District, Leshan, Sichuan, China small cabinet - 6 x 3 x 2.5 cm ![]() ![]() ![]() ![]() Double-terminated clear Quartz crystal with inclusions of graphite and moving bubbles inside water pockets (enhydros). This is a crystal I've owned for about 20 years and was the very best of a large lot of similar crystals purchased. There are bits of Graphite (some large to about 5mm) and bubbles moving everywhere when you turn it in hand, really loaded with movement, I estimate there are about 10 pockets with either a moving bubble or Graphite.
ST564 - Bournonite $ 1200 Machacamarca, Potosi, Bolivia small cabinet - 8 x 6 x 5 cm ![]() ![]() ![]() ![]() ![]() ![]() Large 'cogwheels' or metallic grey Bournonite on matrix. Main crystal is 4cm wide a stands uprite perfectly for display. There are other smaller Bournonite crystals present along with small Tetrahedrite crystals.
ST585 - Fluorite with Galena $ 750 Blackdene Mine, Weardale, Durham, England small cabinet - 8.5 x 5 x 4.5 cm ![]() ![]() ![]() ![]() ![]() Translucent to transparent purple Fluorite cubes intergrown with Galena cubes. The Fluorite has great glassy luster and really lights up in natural sunlight. Ex. A.E. Seaman Mineral Museum.
ST553 - Tourmaline $ 150 SOLD St. Anne's Mine, Miami, Karoi District, Zimbabwe miniature - 3.5 x 0.6 x 0.6 cm ![]() ![]() ![]() Single deep green transparent Tourmaline crystal from recent production at the famous St. Anne's mine in Zimbabwe. Tourmaline has been very rare from this mine historically, which has primarily targeted blue Topaz. Though dark, it is transparent facet grade green throughout with a more greenish brown color at the termination. Complete all around and perfect.
ST554 - Tourmaline $ 400 St. Anne's Mine, Miami, Karoi District, Zimbabwe small cabinet - 7.2 x 0.7 x 0.6 cm ![]() ![]() ![]() Long, dark green but transparent single Tourmaline crystal from recent production at the famous St. Anne's mine in Zimbabwe. Tourmaline has been very rare from this mine historically, which has primarily targeted blue Topaz. Though dark, it is transparent facet grade throughout with a more greenish brown at the tip and a bright pure green over the rest of the crystal. The crystal has a natural 'bend' near the base caused by natural fracturing and rehealing processes during the crytal's growth. Complete and undamaged and weighs 8.52 grams.
ST538 - Amethyst $ 200 SOLD Las Vigas, Vera Cruz, Mexico small cabinet - 5.8 x 4.8 x 2 cm ![]() ![]() ![]() ![]() Complete and undamaged purple Amethyst crystals on a green Epidote covered matrix. The main crystal is very gemmy at the top and rises straight up off the matrix. It's a double-terminated scepter grown over an earlier small Quartz crystal. Wild and interesting specimen with another attached Amethyst grown downward and away from the main crystal. ©2010-2018 Marin Mineral |