mineral
Sunstone
Feldspar group (Plagioclase / Oligoclase), Na(AlSi3O8) to Ca(Al2Si2O8)
AI-generated identification · may be incorrectMohs hardness of 6-6.5, pink to orange-red color with metallic aventurescence caused by copper platelets, vitreous luster, triclinic crystal system.
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Physical properties
Mohs hardness of 6-6.5, pink to orange-red color with metallic aventurescence caused by copper platelets, vitreous luster, triclinic crystal system.
Formation & geological history
Forms in igneous rocks like basalts and granites, as well as metamorphic environments, through the exsolution of copper plates within feldspar matrices.
Uses & applications
Widely used in jewelry for rings and pendants, and highly prized by mineral collectors.
Geological facts
The characteristic glitter or aventurescence is caused by tiny reflective inclusions of copper, hematite, or goethite.
Field identification & locations
Identified by its distinct warm peach-orange color and glittering metallic sheen; commonly sourced from Oregon, USA, and Norway.
