A cluster of microcline twinned crystals
A cluster of microcline twinned crystals

Microcline Value, Price, and Jewelry Information


Microcline is a variety of feldspar. The only microcline you are likely to encounter is amazonite.

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Microcline is a variety of feldspar. The only microcline you are likely to encounter is amazonite.

A cluster of microcline twinned crystals
A cluster of microcline twinned crystals (10,0 x 9,5 cm) By Tom Epaminondas (mineral collector) and Eurico Zimbres (FGEL/UERJ) (Own work) [Public domain], via Wikimedia Commons

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Microcline Value

Highest values go to color, transparency, size.

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.

  • Pala, California; Maine: New York: North Carolina.
  • USSR; Norway; Sweden: Germany; Italy; Japan: South Africa.
  • Colorado (Pikes Peak area): amazonite.
  • Amelia Courthouse. Virginia: finest amazonite in the United States.
  • South Dakota: perthite.
  • Canada: perthite, especially Ontario and Quebec.
  • Brazil: fine amazonite.
  • India (Kashmir District): amazonite.
  • Australia (Harts Range).
Amazonite
Amazonite

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