標 本 名: | エルバイト(トルマリン) ショール (鉄エルバイト(トルマリン)) (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) | Well sized unusual intergrown schorl crystal with doubly termination. The crystal is made out of three parallel intergrown crystals were one side disclosing recrystallized or felted surface, while the other end is showing the typical, more trigonal termination. Interesting item for any schorl collector.
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