標 本 名: | 電気石 - ショール (鉄電気石) (Tourmaline, Variety: Elbaite - Schorl )
| 化学組成: | Na(Li1,5AL1,5)Al6(BO3)3[Si6O18](OH)3(OH) -NaFe3+2Al6(BO3)3[Si6O18](OH)3 | 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) | This is a great rare specimen; it’s a doubly terminated schorl showing a perfect flat natural grown termination, while the other side was overgrown by green elbaite. On both sides some albite is attached and making a nice contrast on the lustrous back prism faces. Lovely piece!
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