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Encyclopedia > Andesine

Andesine is a feldspar mineral, a part of the plagioclase series. Feldspar is the name of an important group of rock-forming minerals which make up perhaps as much as 60% of the Earths crust. ... This article is about minerals in the geologic sense; for nutrient minerals see dietary mineral; for the band see Mineral (band). ... Lunar Ferroan Anorthosite #60025 (Plagioclase Feldspar). ...


It is usually defined as having "%An" between 30 and 50.


Density is about 2.68.


See the plagioclase main article for more information. Lunar Ferroan Anorthosite #60025 (Plagioclase Feldspar). ...


  Results from FactBites:
 
ANDESINE (Sodium Calcium Aluminum Silicate) (319 words)
Andesine is only a minor constituent in most granites and syenites.
Andesine is a member of the Plagioclase Feldspar Group.
Andesine by definition must contain 70-50% sodium to 30-50% calcium in the sodium/calcium position of the crystal structure.
Precious and semi precious gemstones, rare gems, jewelery, golden and platinum nuggets, meteorites, diamond necklaces. (1440 words)
Andesine is an intermediate member of the plagioclase series, close to Labradorite.
The "Chinese Andesine" (also called "Tibet Sunstone" or "Tibet Andesine") on the market is not as pure, and the red stones appear to have a brownish tone that is not present in the Congo Andesine.
In addition, Andesine is considerably rarer than Tanzanite; compare the few hundred stones of Andesine found to date to the tens of thousands of Tanzanites.
  More results at FactBites »


 

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