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Montana Mineral Specimens
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OKI-400 Pyrite and Quartz Leonard Mine, Butte, Silver Bow Co., Montana. Ex. Dr. Steve Chamberlain Collection. Sharp display pice composed of complex pyrites with partial coatings of sphalerite. The specimen measures 5.2 x 3.5 x 3 cm with pyrites to approx. 1.1 cm each. Contats from other matrix on bottom, back and one side. Damage free. Showy speimen from a classic locality. 150$
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OKF-441 Amethyst on Quartz. Jefferson Co., Montana. Ex. Dr. Steve Chamberlain Collection. Prev. Donald Briggs collection. This 3.3 cm wide piece displays two well formed amethyst crystals on the side of a smoky, lower luster quartz crystal. The amethyst stick out to the sides like the ears on Mickey Mouse’s head. Damage free and fully crystallized on all sides. Attractively mounted in a perky box. 25$
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OKF-032 Enargite on Pyrite Leonard Mine, Butte, Montana. Ex. Jim Turek Collection. Showy specimen from a classic US locality. This plate measures 6.5 x 5 cm and is about 2.2 cm thick. The backside of piece is all pyrite and is partially crystallized. The front has a large group of flattened enargite crystals to 1.5 cm which stand off the pyrite matrix. No damage to this showy specimen. 500$
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OKE-025 Quartz on Rhodochrosite Butte, Montana Ex. Nancy Collins collection. Beautifully formed quartz sprays on pink rhodos to 1.3 cm each on edge. No damage and very displayable. Old collection number and some Styrofoam on base of piece. 8 x 6.5 x 5 cm. Another American classic. 700$
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OKD-500 Quartz on Rhodochrosite Butte, Montana. Ex Nancy Collins Collection. I assume this is an Emma Mine specimen. There is a nice spray of clear to milky quartz on this small but sweet thumbnail specimen. Two quartz points are damaged, otherwise clean. Mounted in Perky box. 2.1 x 1.7 x .6 cm. Very attractive and well priced at 45$
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OKD-347 Enargite Butte, Montana. Ex. Nancy Collins Collection. A nice damage free grouping of crystals to 1.3 cm each. High luster and very minor peripheral contact. On a matrix of mostly pyrite. 2.2 x 2 x 1.8 cm. 90$
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OKB-613 Goethite pseudo after Pyrite Helena, Montana OKB-616 Dolomite pseudo. After Orthoclase Kokomo, Colorado. Ex. Dr. Steve Chamberlain Collection. Interesting pyritohedron that is twinned. Crystal is 1.5 cm. 25$
