標 本 名: | フッ素燐灰石 (Apatite (Fluorapatite)) / 雲母, 白雲母 (Mica, Variety: Muscovite)
| 化学組成: | Ca5(PO4)3F / KAl2(Si3Al)O10(OH,F)2 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Laghman (Lagman; Nuristan) Province, アフガニスタン (Afghanistan) | Here you get rarely found purple apatite crystal clusters on a muscovite matrix from Afghanistan. The crystals disclosing fine luster and transparent to translucent clarity. Some of the crystals show some crystalline fracture but the most are terminated or doubly terminated.
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