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標題: 【石榴石Garnet】 [列印本頁]

作者: 寂寞歌聲    時間: 2011-11-30 00:19:38     標題: 【石榴石Garnet】

石榴石,中國古時稱為紫鴉烏或子牙烏,是一組在青銅時代已經使用為寶石及研磨料(Abrasive)的礦物。









常見的石榴石為紅色,但其顏色的種類十分廣闊,足以涵蓋整個光譜的顏色。









石榴石英文"Garnet" 來自拉丁文"granatus" ("grain",即穀物),可能由"Punica granatum" ("pomegranate",即石榴)而來,它是一種有紅色種子的植物,其形狀、大小及顏色都與部分石榴石結晶類似。









常見的石榴石因應其化學成分而確認為六種種類,分別為紅榴石(Pyrope)、鐵鋁石榴子石(Almandine)、錳鋁石榴石(Spessartite)、鈣鐵石榴石(Andradite )、鈣鋁榴石(Grossular)(變種有沙弗來石(tsavorite)及肉桂石(hessonite))及鈣鉻榴石(Uvarovite)。









石榴石形成兩個固溶體系列:
1. 紅榴石-鐵鋁石榴子石-錳鋁石榴石及
2. 鈣鉻榴石-鈣鋁榴石-鈣鐵石榴石。









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作者: supersimon    時間: 2015-3-28 14:38:15

寶石世界真精彩,又長見識了,感謝大大的知識分享~~




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