back

礦物之美(淡紅銀礦-Proustite)

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.
礦名來源:After the French chemist, J. L. Proust (1755-1826).

著名產地∼Atacama, Chile; silver mines in Saxony Germany; Poorman Mine, Idaho and Chihuahua, Mexico.

經典名礦欣賞 10
NO.127