An aluminous related species is known as gedrite and a deep green Russian variety containing little iron as kupfferite.
2.
"' Nuummite "'is a rare metamorphic rock that consists of the amphibole minerals gedrite and anthophyllite.
3.
The upper flow facies tend to be dominated by talc, chlorite, tremolite, and other magnesian amphiboles ( anthophyllite, cummingtonite, gedrite, etc . ).
4.
Gedrite occurs in contact and medium to high grade metamorphic rocks in association with garnet, cordierite, anthophyllite, cummingtonite, sapphirine, sillimanite, kyanite, quartz, staurolite and biotite.
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