標 本 名: | スピネル (Spinel)
| 化学組成: | MgAl2O4 | サ イ ズ: | 100,0 x 65,3 x 34,2
クリスタル: 12,6 x 12,2 x 10,0 - 4,1 x 3,3 mm | 重量: | | 透明: | | 数量: | | 産地: | near Ah Phu village, Luc Yen ("Yuang Yang"; "Yueng Yang"), Yenbai (Yen Bai) Province, ベトナム (Vietnam) | Three crystal at the left side show some crystalline fracture at the points the other crystal include the biggest piece are fully intact with good luster and medium transparency !
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