標 本 名: | 方ソーダ石, ﾊｯｸﾏﾅｲﾄ (Sodalite, Variety: Hackmanite)
| 化学組成: | Na8Al6Si6O24(Cl2,S) | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Pyan Gyi mine (West of Pyan Pyit), northeast of Mogok, ビルマ(ミャンマー) Burma (Myanmar) | This is a very big hackmanite crystal on feldspar matrix. Crystals of that size a very rarely found apart from one side the specimen is fully undamaged and discloses rather rounded shape but no damages. As you can see in the photos the specimen is almost colorless until it gets exposed to UV-or sunlight, then the color is dramatically enhanced and becomes a strong purplish violet. The specimen shows good cabochon quality.
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