標 本 名: | 電気石, ショール (鉄電気石) (Tourmaline, Variety: Schorl)
| 化学組成: | NaFe3+2Al6(BO3)3[Si6O18](OH)3(OH) | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Shigar Valley, Skardu District, Baltistan, Northern Areas, パキスタン (Pakistan) | This is the best bent schorl crystal I have seen so far the specimen is 20 cm long disclosing only tiny crystalline fracture faces at the „fibrous“ side, the other end shows flat termination or recrystallization. The specimen is littered with tiny crystal along the prism faces. I counted almost 40 healed fissures; the crystal could tell you a nice long tectonic story...
A exceptional beauty !
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