標 本 名: | 電気石, (Tourmaline, Variety: Elbaite)
| 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: | Shewa Pegmatite Field, Badakhshan (Badakshan; Badahsan) Province, アフガニスタン (Afghanistan) | Undamaged doubly terminated crystal with one flat and one trigonal termination. The tip shows some light pink coloration and also a colorless area at both ends. The color is more yellowish under incandescent light.
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