mineral
Almandine Garnet
Fe3Al2(SiO4)3
AI-generated identification · may be incorrectHardness of 7.5 on the Mohs scale, deep red to brownish-red color, vitreous luster, isometric crystal system with cubic or dodecahedral habits, and no true cleavage.
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Physical properties
Hardness of 7.5 on the Mohs scale, deep red to brownish-red color, vitreous luster, isometric crystal system with cubic or dodecahedral habits, and no true cleavage.
Formation & geological history
Forms in metamorphic rocks like schist and gneiss through regional metamorphism, as well as in some igneous rocks like granite pegmatites.
Uses & applications
Used extensively as an abrasive in waterjet cutting and sandblasting, as well as cut into gemstones for jewelry.
Geological facts
Almandine is the most common variety of garnet and derives its name from Alabanda, an ancient Asian city where these stones were cut and traded.
Field identification & locations
Identified by its dark red color, high hardness, and distinct dodecahedral crystal habit; commonly found in metamorphic terranes worldwide.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous