Smoky Quartz - Papachacra, Catamarca Province, Argentina
Smoky Quartz
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The unusual characteristic of this light smoky, glassy and gemmy, quartz specimen is that certain faces exhibit preferential etching, especially the larger 8.5 cm-tall crystal. The etching is most obvious near the termination of the larger crystal. Light, pleasing color and very gemmy!
Papachacra, Argentina - pocket miarolitic pegmatite yielding smoky quartz on microcline, albite, fluorite, and topaz; noted for Nb-Ta-REE minerals and topaz po…
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