標 本 名: | 電気石, ウヴァ石 ( Tourmaline, Variety: Uvite)
| 化学組成: | (Ca,Na)(Mg,Fe2+)3(Al, V)5Mg(BO3)3Si6O18(OH,F)4 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Kavungu mine, Jivunda, Mwinilunga (Mwinlunga), North-Western Province , ザンビア (Zambia) | Here you get a slice of trapiche Tourmaline crystal, the piece was polished from both sides.
The inclusions are cause by graphite inclusions which have been imbedded during the growth.
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