正长石

Latites contain plagioclase feldspar (andesine or oligoclase) as large, single crystals (phenocrysts) in a fine-grained matrix of orthoclase feldspar and augite.

安粗岩中含（中或奥），是在正和普通辉组成的细粒基质中的大单晶体（斑晶）。

The feldspar group contains tectosilicate minerals with similar properties, including orthoclase, albite and labradorite. Feldspars make up more than 60% of the upper crust of the earth.

系列含网状矽酸盐的矿物并且有相似的属性,括正,钠以及拉.构成了60%的壳.