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K665 - Galena (spinel twin) $ 150 Mina Ojuela, Mapimi, Durango, Mexico thumbnail - 2.8 x 1.7 x 1.5 cm ![]() ![]() ![]() Lustrous spinel-twinned Galena crystal. Galena is not commmon from Mapimi, and spinel-twins less so.
K667 - Cuprian Adamite $ 150 Laurium, Greece thumbnail - 1.3 x 1 x 1 cm ![]() ![]() ![]() An 8mm hemispherical cluster of blue/green Smithsonite set in matrix.
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.
K733 - Tsavorite with Diopside Merelani Hills, Arusha, Tanzania thumbnail - 1.4 x 1.3 x 1.1 cm ![]() ![]() ![]() Cluster of translucent to transparent green Tsavorite crystals with Diopside. Slight chipping otherwise well crystallized all around with good luster and associated small Diopside crystals.
K681 - Pyromorphite $ 180 Bunker Hill Mine, Idaho, USA thumbnail - 1.5 x 1.1 x 1 cm ![]() ![]() ![]() ![]() Nearly complete 1.1cm sphere of arsenian Pyromorphite atop a smaller partial sphere.
K674 - Pyromorphite $ 140 Bunker Hill Mine, Idaho, USA thumbnail - 1.3 x 0.9 x 0.9 cm ![]() ![]() ![]() Two nearly complete interconnected spheres of arsenian Pyromorphite.
K664 - Fluorite Mina Ojuela, Mapimi, Durango, Mexico thumbnail - 2.5 x 2.2 x 2.2 cm ![]() ![]() ![]() ![]() Gem-like transparent Fluorite crystal with a small amount of attached Galena on the backside. Uncommmon from Mapimi.
K845 - Prehnite $ 175 Merelani Hills, Arusha, Tanzania miniature - 3.7 x 3.5 x 2.5 cm ![]() ![]() ![]() ![]() Spherical cluster of green Prehnite with larger individual crystals that have grown out from the center. The backside is contacted with an attached partial Tanzanite crystal and there is Graphite on the base. The front and larger crystals are all undamaged. This greenish color is distinct and typical of 2018/2019 finds.
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.
K800 - Spinel $ 275 Mahenge, Morogoro, Tanzania thumbnail - 2 x 1.7 x 1.5 cm ![]() ![]() ![]() ![]() ![]() Intergrown cluster of 4 red/pink Spinels. Spinel from Mahenge is world famous for incredible faceted gemstones and much of what is found is used for gems. This is good cluster of octahedral crystals with just a small amount of chipping. Largest crystal is 1.8cm.
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.
K796 - Pyrite $ 300 Merelani Hills, Arusha, Tanzania small cabinet - 6 x 5.2 x 3.5 cm ![]() ![]() ![]() ![]() Large, somewhat flat single Pyrite crystal with large, flat faces and incredible luster. The exotic crystal forms and high luster of Merelani Pyrite make it my favorite of any Pyrite found. This is a good example atop a small amount of Calcite and Graphite.
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