標 本 名: | エルバイト(トルマリン), エルバイト ) (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: | Paprok, Nuristan Province (Nurestan; Nooristan), アフガニスタン (Afghanistan) | This is a hand size multiple twinned tourmaline crystal from Paprok. The specimen shows mainly greenish colorations and partly pinkish areas. The specimen consists of multiple single crystals parallel twinned mostly with termination. The former contact zone to the matrix is seen on the flat backside and is almost entirely recrystallized. Pretty big and heavy tourmaline from the Paprok mine.
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