Hydroxyapophyllite-(K)
Virginia Crushed Stone Quarry, Loudoun County, Virginia, USA
9.8 x 5.5 x 4.3 cm. This obscure Virginia traprock quarry is known for exceptional fluorapophyllite-(K) crystals, but specimens of this richness and high quality are rare. Glassy, translucent, sharp, tabular tetragonal crystals are festooned jackstraw-style on the basalt matrix crust. The dramatic large and pristine prism is 4.3 cm across. ...
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