igneous
Rose quartz-bearing pegmatite
Quartz (SiO₂) with pink feldspar, likely potassium feldspar; exact identification is limited by the image
AI-generated identification · may be incorrectCoarse-grained, pale gray translucent quartz with salmon-pink feldspar; both have vitreous luster. Quartz is Mohs 7 with no cleavage; feldspar is Mohs 6 and commonly cleaves in two directions. The specimen appears massive and intergrown rather than a single crystal.
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Physical properties
Coarse-grained, pale gray translucent quartz with salmon-pink feldspar; both have vitreous luster. Quartz is Mohs 7 with no cleavage; feldspar is Mohs 6 and commonly cleaves in two directions. The specimen appears massive and intergrown rather than a single crystal.
Formation & geological history
Likely formed as a coarse-grained pegmatite from the final, volatile-rich melt of cooling magma. Such rocks occur in many ages and settings; the specimen’s age and locality cannot be determined from appearance alone.
Uses & applications
Pegmatite minerals are used for decorative stone and mineral collecting; quartz and feldspar also have major industrial uses. This rough fragment is mainly a collector specimen.
Geological facts
Pegmatites can contain exceptionally large crystals and are important sources of quartz, feldspar, mica, and some gemstones.
Field identification & locations
Look for coarse interlocking crystals and distinguish quartz’s glassy, irregular fracture from feldspar’s flatter cleavage faces. Common worldwide in granitic pegmatites; locality is unknown here.
