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铌钙矿(铌钙矿) - 简单百科
铌钙矿
来源:互联网

钙矿:成分CaNb2O6,含Nb2O5达71%,含Tr2臭氧一般为4.8-6.3%,在稀土铌钙矿中可达15%,常含钛,正交晶系晶体呈短粒状,通常呈不规则粒状集合体,暗褐色或黑色,条痕浅灰褐色或淡褐色,树脂光泽,硬度4.7-4.8,具微弱放射性。是提取铌等稀土元素的矿物原料。

参考资料 >


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