Microcline is a variety of feldspar. The only microcline you are likely to encounter is amazonite.
Comments
Microcline crystals, associated with smoky quartz, are popular mineral specimens from the Pike's Peak area of Colorado. The color of amazonite ranges from pale green to dark green and blue-green. Pinkish orthoclase is also often present as an intergrowth.
Name
Microcline is from Greek words meaning small and inclined because the cleavage is close to but not quite 90°.
Occurrence
Microcline occurs in acidic alkali-rich plutonic rocks; also in rocks such as pegmatites, granites, syenites, and schists.
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Comments
Microcline crystals, associated with smoky quartz, are popular mineral specimens from the Pike's Peak area of Colorado. The color of amazonite ranges from pale green to dark green and blue-green. Pinkish orthoclase is also often present as an intergrowth.
Name
Microcline is from Greek words meaning small and inclined because the cleavage is close to but not quite 90°.
Occurrence
Microcline occurs in acidic alkali-rich plutonic rocks; also in rocks such as pegmatites, granites, syenites, and schists.
Microcline is a variety of feldspar. The only microcline you are likely to encounter is amazonite.
Highest values go to color, transparency, size.
