Crystals and minerals - metallic |
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Iridescent coppery crystals of chalcopyrite on matrix, from Reynolds
County, Missouri. Black walnut base.
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An intricate specimen of native copper from Michigan with a few bits of
green matrix, on a polished black onyx base.
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Bright native copper from Michigan, highlighted by green matrix, on a black walnut base.
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Bright native copper from Michigan, with a few pieces of green matrix,
on a polished black onyx base.
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An intricate arborescent (tree like) copper specimen on a semi-rough slab
of amazonite. This copper is an industrial by-product, although it does occur
naturally in this form.
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An intricate arborescent (tree like) copper specimen on a semi-rough slab
of amazonite. This copper is an industrial by-product, although it does occur
naturally in this form.
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Crystalline bismuth, man-made, silver coloured, on a black walnut base.
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Crystalline bismuth, silver coloured, man-made, on a black walnut base.
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Crystalline bismuth, silver with blue and purple iridescence,
man-made, on a black walnut.
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An angular and very shiny galena specimen, on a black onyx base.
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