细晶石

细晶石是一种矿物。颜色为浅黄、红褐或黑色。立方晶系。分子为(Na,Ca)2Ta2O6(O,OH,F)。属于烧绿石组，出现于伟晶岩。构成钽矿。 莫氏硬度5.5。比重4.2-6.4。半透明至不透明的八面体晶体。折射率2.0-2.2。 

英文名称microlite源自希腊文mikros意为"small"与lithos意为"stone"。

参考文献
Palache, C., H. Berman, and C. Frondel (1944) Dana’s system of mineralogy, (7th edition), v. I, 748–757
Webmineral data 
Mindat with location data 
Mineral data publishing PDF 
Atencio, D., Andrade, M. B., Christy, A. G., Gieré, R., & Kartashov, P. M. (2010). The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48(3), 673-698.
Andrade, M. B., Atencio, D., Menezes Filho, L. A., & Ellena, J. (2011). The crystal structure of a microlite-group mineral with a formula near NaCaTa2O6F from the Morro Redondo mine, Coronel Murta, Minas Gerais, Brazil (vol 49, pg 615, 2011). CANADIAN MINERALOGIST, 49(5), 1338-1338.

氧化物矿物
含鉭礦物