標 本 名: | エルバイト(トルマリン), インディゴライト ｷｬｯｱｲ (Indicolite)
| 化学組成: | Na(Li1,5AL1,5)Al6(BO3)3[Si6O18](OH)3(OH) | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Mawi Pegmatite, Laghman (Lagman; Nuristan) Province, アフガニスタン (Afghanistan) | A great intense blue colored Indicolite crystal. The specimen shows even partly some transparent areas. Which makes this specimen so unique is the bent crystal shape with many healed fissures. The crystal must have gone through a lot of tectonic stress during the crystal growth. The prism surface show good luster and is littered with small blue twin crystals. A rare specimen from the Mawi pegmatite area.
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