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K698 - Wulfenite with Mimetite $ 375 Glove Mine, Santa Cruz Co., Arizona, USA small cabinet - 6.5 x 6 x 3.5 cm ![]() ![]() ![]() ![]() ![]() ![]() Golden yellow Wulfenite crystals to 1.7cm with small spherical Mimetite crystal groupss, good all around.
K712 - Smithsonite after Dolomite $ 225 Rush Creek Mining District, Marion Co., Arkansas, USA miniature - 5 x 3.5 x 1.5 cm ![]() ![]() ![]() ![]() Bright yellow crystals of Smithsonite replacing Dolomite, with the curving form of the former Dolomite crystals clearly evident. Smithsonite also covers the surface of the matrix. The bright color is caused by inclusions of Greenockite.
K738 - Fluorite with Calcite $ 600 Dongpo Mine, Yizhang Co., Hunan, China small cabinet - 7 x 6 x 3.5 cm ![]() ![]() ![]() ![]() ![]() ![]() Transparent light green Fluorite cubes with transparent wafer-like Calcite crystals. The quality of both the Fluorite and Calcite is remarkable. The best of a small lot I obtained years ago.
K739 - Cinnabar $ 300 Yanwuping Mines, Guizhou, China miniature - 5 x 4.2 x 3.8 cm ![]() ![]() ![]() Cluster of large, twinned Cinnabar crystals 2.2cm wide on Dolomite and Quartz crystals. Another small 'drill bit' twin is near the base.
K717 - Tsavorite on Diopside $ 75 Merelani Hills, Arusha, Tanzania thumbnail - 1.2 x 0.8 x 0.7 cm ![]() ![]() ![]() ![]() Elongated groups of Tsavorite crystals intergrown with a glassy, terminated Diopside crystal. There are also small Pyrite crystals associated.
K653 - Ludlamite $ 180 Blackbird Mine, Lemhi Co., Idaho, USA thumbnail - 1.2 x 1 x 0.6 cm ![]() ![]() ![]() ![]() Large single crystal on a tiny bit of matrix. Well terminated, translucent, and undamaged.
K718 - Tsavorite on Graphite $ 275 Merelani Hills, Arusha, Tanzania thumbnail - 1.5 x 1 x 1 cm ![]() ![]() ![]() High quality, glassy 1cm Tsavorite crystal with good color on a Graphite matrix. Undamaged crystal that is transparent. There are some shallow grooves on the surface caused by former Graphite crystals.
K660 - Cobaltian Calcite $ 125 Mashamba West Mine, Katanga, Democratic Republic of Congo thumbnail - 1.4 x 1.3 x 1.1 cm ![]() ![]() ![]() ![]() Cluster of pink Mangano Calcite crystals from the famous Mashamba West Mine. Main crystal is thick and 1.1cm tall.
K654 - Siegenite $ 200 Level 4, Buick Mine, Iron Co., Missouri, USA thumbnail - 1.5 x 1.1 x 1.1 cm ![]() ![]() ![]() ![]() Ten octahedral Siegenite crystals to 4mm on matrix of Marcasite. Siegenite is a rare cobalt nickel sulfide. High quality, aesthetic rare mineral.
K827 - Apatite on Diopside (?) $ 250 Chamkoroma, Dodoma Province, Tanzania miniature - 4 x 3 x 2 cm ![]() ![]() ![]() ![]() ![]() A 2.4 terminated Apatite crystal attached to two terminated green crystals (possibly Diopside or other Pyroxene). This is relatively new material and the only aesthetic specimen that I saw of the material. The Apatite is translucent and gets transparent near the termination. There is also a small amount of transparent, colorless Hyalite Opal attached to the green crystals.
K835 - Tanzanite $ 425 Merelani Hills, Arusha, Tanzania miniature - 3.8 x 1.5 x 1 cm ![]() ![]() ![]() ![]() ![]() Double-terminated bi-colored Tanzanite crystal, blue/purple with yellow tips on each end. Clean and undamaged.
K797 - Spinel $ 225 Mahenge, Morogoro, Tanzania thumbnail - 2.5 x 2.3 x 1.8 cm ![]() ![]() ![]() ![]() ![]() Pink Spinel from Mahenge is world famous for incredible faceted gemstones and much of what is found is used for gems. This is an uncommon, nearly complete octahedral crystal with just a small amount of chipping on one tip, otherwise undamaged and lustrous all around. Weighs 13.37 grams.
K808 - Spinel $ 160 Mahenge, Morogoro, Tanzania thumbnail - 2 x 1.9 x 1 cm ![]() ![]() ![]() ![]() A 1.2cm pink Spinel on Calcite. The Spinel has great color and is translucent with transparent zones. Undamaged.
K820 - Spinel $ 140 Mahenge, Morogoro, Tanzania thumbnail - 1.5 x 1.5 x 1 cm ![]() ![]() ![]() ![]() A 1.5cm pink Spinel with attached Calcite. The Spinel has great color and is translucent with transparent zones. Undamaged.
K781 - Pyrite $ 150 Merelani Hills, Arusha, Tanzania miniature - 4.5 x 4.5 x 4 cm ![]() ![]() ![]() ![]() ![]() Large, complex single Pyrite crystal with high luster. The exotic crystal forms and high luster of Merelani Pyrite make it my favorite of any Pyrite found. There are two smaller attached crystals and it's contacted on the base, otherwise complete all around with just a few chips and great overall form and presentation.
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