Labradorite, a feldsparmineral, is a member 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 50 and 70.
Density is about 2.71.
See the plagioclase main article for more information. Lunar Ferroan Anorthosite #60025 (Plagioclase Feldspar). ...
LABRADORITE, or Labrador Spar, a lime-soda felspar of the plagioclase group, often cut and polished as an ornamental stone.
Common labradorite, without play of colour, is an important constituent of such rocks as gabbro, diorite, andesite, dolerite and basalt.
The term labradorite is unfortunately used also as a rockname, having been applied by Fouque and Levy to a group of basic rocks rich in augite and poor in olivine.
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