標 本 名: | 電気石 -ショール (鉄電気石) / 金雲母/ 曹長石 (Tourmaline, Variety: Elbaite -Schrol / Albite)
| 化学組成: | Na(Li1,5AL1,5)Al6(BO3)3[Si6O18](OH)3(OH) / SiO2 - NaFe3+2Al6(BO3)3[Si6O18](OH)3(OH) / NaAlSi3O8 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Stak Nala, Haramosh Mts., Skardu District, Baltistan, Northern Areas, パキスタン (Pakistan) | Three twinned multicolor tourmaline crystals with a black base followed by a green part and fading into colorless topping. All crystals have undamaged shape two with flat termination one with an irregular but not damaged top. At one side some albite crystals are attached. Fine twinned specimen from Pakistan.
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