Edenite
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Mineral NameEdenite
Chemical FormulaNaCa2Mg5(Si7Al)O22(OH)2
Mohs Hardness5.5
Crystal Systemmonoclinic
Lustervitreous
Streak Colorwhite
Cleavageperfect on {110} at 56° and 124°
Fractureuneven
Specific Gravity3.05
Colorswhite, light green, gray, colorless
Transparencytranslucent
Type LocalityEdenville, New York, USA (type locality)
Mineral GroupSilicates (Amphibole Group)
Usesscientific research, mineral collecting
Associated Mineralsquartz, feldspar, pyroxene, mica, calcite, garnet
Rarityuncommon
Description
Edenite typically forms prismatic to acicular crystals, often exhibiting a light green, white, or gray color with a vitreous luster.
Geological Context
This amphibole mineral is commonly found in medium- to high-grade metamorphic rocks such as amphibolites and skarns, and occasionally in some igneous rocks.
