igneous
Pink-orange feldspar-rich rock fragment
Likely potassium feldspar (orthoclase or microcline) in a coarse-grained granitic or pegmatitic rock; exact identification is uncertain from the image alone.
AI-generated identification · may be incorrectSalmon-pink, granular, with a dull to slightly vitreous luster and irregular fracture; likely Mohs hardness about 6. Feldspar has a framework-silicate crystal structure, two near-right-angle cleavage directions, and specific gravity around 2.5–2.7.
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Physical properties
Salmon-pink, granular, with a dull to slightly vitreous luster and irregular fracture; likely Mohs hardness about 6. Feldspar has a framework-silicate crystal structure, two near-right-angle cleavage directions, and specific gravity around 2.5–2.7.
Formation & geological history
If granitic, it crystallized as silica-rich magma cooled slowly underground, probably deep in continental crust. No geological age can be determined from the photograph.
Uses & applications
Feldspar is used in ceramics and glass; granite and pegmatite are used as building and decorative stone. This small fragment has little practical or jewelry value.
Geological facts
Pink color commonly comes from trace iron in potassium feldspar, though iron staining can also color rock surfaces.
Field identification & locations
Look for blocky grains and two cleavage planes meeting close to 90°; a hardness test or fresh break would help distinguish feldspar from other pink minerals. Pink feldspar occurs worldwide in granites and pegmatites.
