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礦物之美-(淡紅銀礦-Proustite)
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PROUSTITE Ag3AsS3 (trigonal) . deep
red translucent crystals cluster . Schneeberg, Germany . 淡紅銀礦鮮紅色,但在長期光線照射下轉為暗紅色,或被覆一層白霧狀色彩,硬度
2 - 2.5 ,比重5.6,少見六面柱狀結
晶,易碎,金屬或金鋼光澤,與深紅銀礦結構類似∼isostructural,差異在於 antimony and arsenic,與深紅銀礦同享"Ruby
Silver" 美名,為罕見 高價位礦物. 著名產地∼Atacama, Chile; silver mines
in Saxony Germany; Poorman Mine, Idaho and Chihuahua, Mexico. |
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