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fluorapatite |
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fluorapatite [flu̇·′rap·ə‚tīt] (mineralogy) Ca5(PO4)3F A mineral of the solid-solution series of the apatite group; common accessory mineral in igneous rocks. An apatite mineral in which the fluoride member dominates. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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5 mm), colorless, short-prismatic fluorapatite crystals. At locality 5, thomsonite is found as transparent to translucent, colorless to gray, elongated rectangular blades flattened on {001}, as cruciform twins, and as divergent crystal aggregates on altered meionite, diopside and fluorapatite crystals exposed in voids in FPS skarn. Also from Imilchil there are glassy hexagonal prisms of translucent, pale grayish yellow fluorapatite embedded in cavernous masses of drusy milky quartz; the fluorapatite crystals reach 5 cm long, and the matrix ranges from 6 to 10 cm. |
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