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Specimen# CO712B193
gemmy purplish colored crystal of “Onegite” (Amethyst included with Goethite) on the underside of the piece
flame red colored 9 mm crystal of Brookite is associated with dipyramidal crystals of Anatase which show a honey-gold color when backlit
so when you find a nearly clean stone like this
so it's a big deal when you find crystals like this which are so unblemished and bright
Quartz "casts" after Calcite on matrix Eudialyte Specimen# CO712B193A really cool "cast" (sometimes call an epimorph, but some people are now calling them perimorphs) from our beloved San Juan Mountains of Colorado. This piece is from the famous Mineral Farm locality near Ouray. What I love about this specimen is the fact that multiple generations of crystallization took place. The topmost layer features sparkling, drusy white Quartz crystals which have formed complete "casts" after preexisting scalenohedral Calcite.
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