標 本 名: | 緑柱石 , アクアマリン / 雲母, 白雲母 (Mica, Variety: Muscovite)
| 化学組成: | Be3Al2Si6O18 / KAl2(Si3Al)O10(OH,F)2 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Nagar (Nagir), Hunza Valley, Gilgit District, Northern Areas, パキスタン (Pakistan) | A group of six parallel twinned Aquamarine crystals beautiful imbedded in a flower-like muscovite matrix. Five crystals are fully intact one has a very minor crystalline fracture face; nevertheless even the bottom side is crystallized. The hollow part is also starred with smaller beryl crystals. A fine composed specimen from Pakistan.
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