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< | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Chamachhu, Stak Nala, Haramosh Mts., Skardu District, Baltistan, Northern Areas, パキスタン (Pakistan) | Tourmaline crystal with a tri- colored head. The most o the crystal is black, followed by a thin green and a slightly wider colorless area at the termination. The whole crystal is fully intact and shows some feldspar matrix and albite crystal at the prism faces.
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