標 本 名: | トラピッチ・ スピネル (Trapiche Spinel)
| 化学組成: | MgAl2O4 | サ イ ズ: | 19,3 x 9,1 x 8,0 & 12,1 x 11,6 x 3,4 mm | 重量: | | 透明: | | 数量: | | 産地: | Namyarseik (Namya), Kachin state, ビルマ(ミャンマー) Burma (Myanmar) | Here you get two pseudomorphosis , spinel after corundum, more accurately spinel after bipyramidal sapphire crystal! The former Sapphire crystal was also a trapiche Sapphire, therefore the trapiche pattern remained even after the replacement. You can hardly find nice trapiche sapphire cabochons, but this one still discloses in transmitted light a good trapiche pattern and the crystal is fully covered with small spinel and some graphite lamella.
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