Chalcedony on Smoky Quartz “casts” after Laumontite Marcasite Many of you are probably

Many of you are probably familiar with the great multi-color polished slabs of Tourmaline from Madagascar that show a wonderful array of patterns and color arrangements

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Chalcedony on Smoky Quartz “casts” after Laumontite Marcasite Many of you are probablyThis locality in the Cripple Creek District (purportedly in an old mine shaft) produced unique epimorphs or "casts" of Smoky Quartz and Chalcedony replacing Laumontite. The Smoky Quartz has a distinctive muted silvery grey color, with very little luster and a somewhat stalactite esque growth due to the way the Quartz overgrew the preexisting Laumontite. The lack of luster on the Quartz is most likely due to a micro coating of Chalcedony. The biggest