標 本 名: | スピネル (Spinel)
| 化学組成: | MgAl2O4 | サ イ ズ: | 8,1 x 7,8 x 6,7 x & 8,6 x 5,8 x 4,2 mm | 重量: | | 透明: | | 数量: | | 産地: | Pyan Pyit (Pein Pyit) Mine, northeast of Mogok, Shan State, ビルマ(ミャンマー) Burma (Myanmar) | Two “aborted” cyclic spinel twins. The crystals showing both a twinning of two crystals twinned after the spinel law. The bigger one has a tiny damage at one point.
Nevertheless cyclic twins are not that common perfect cyclic twins are really rare!
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