Rhodochrosite
Up for sale is a 2.8x2.8x0.3 cm polis
hed slab of Rhodochrosite from the
Capillitas Mine, Catamarca, Argenti
na.
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含薔薇輝石的岩層中亞錳離子 Mn2+ 溶出後，再與碳酸根 CO2- 結合成新礦物就是菱錳礦；較高溫的熱水作用，令菱錳礦在水晶等礦物上形成美麗結晶，一直為礦物收藏家所喜愛；低溫緩慢溶解與緩慢沉積，就會產生如石灰岩洞中的鐘乳石狀的菱錳礦，價格較低，但也頗受歡迎。
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