mineral
Feldspar
Feldspar (Orthoclase/Microcline)
AI-generated identification · may be incorrectHardness: 6, Color: Orange to reddish-brown, Luster: Vitreous, Crystal structure: Triclinic/Monoclinic, Cleavage: Two directions at approximately 90 degrees
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Physical properties
Hardness: 6, Color: Orange to reddish-brown, Luster: Vitreous, Crystal structure: Triclinic/Monoclinic, Cleavage: Two directions at approximately 90 degrees
Formation & geological history
Commonly forms in igneous rocks like granite, also found in metamorphic and sedimentary rocks.
Uses & applications
Used in ceramics, glassmaking, and sometimes as a gemstone (e.g., sunstone or moonstone).
Geological facts
Feldspars are the most abundant group of minerals in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Identified by its hardness, cleavage, and typical salmon-pink to orange colors in the field. Found worldwide.
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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