Feldspar (Microcline) Source: US Government archive copy at the Wayback Machine https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public...
granites. The granite consists of soda-lime feldspar (oligoclase), potash feldspars (orthoclase and microcline), quartz, and biotite, together with accessory...
Microscopically the principal minerals are potash feldspar (orthoclase and microcline), soda-lime feldspar (oligoclase) , quartz, and biotite, with accessory...
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