igneous
Pink feldspar-bearing granite or pegmatite fragment
Mostly potassium feldspar (orthoclase/microcline), quartz, and minor mica; exact identification requires testing
AI-generated identification · may be incorrectCoarse, pink-and-white crystalline texture with a vitreous to pearly luster; feldspar hardness ~6, quartz ~7, no obvious cleavage visible at this scale, and specific gravity typically 2.6–2.7.
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Physical properties
Coarse, pink-and-white crystalline texture with a vitreous to pearly luster; feldspar hardness ~6, quartz ~7, no obvious cleavage visible at this scale, and specific gravity typically 2.6–2.7.
Formation & geological history
Likely formed by slow cooling of silica-rich magma, allowing visible crystals to grow; its geological age cannot be determined from the photograph and may range from Precambrian to recent intrusive bodies.
Uses & applications
Granite is used for countertops, monuments, aggregate, and building stone; attractive pink pegmatitic pieces are collected as field specimens but are generally low-value uncut material.
Geological facts
The pink color commonly comes from potassium feldspar, while translucent gray-white areas may be quartz; the specimen could also be feldspar-rich pegmatite rather than ordinary granite.
Field identification & locations
Look for interlocking crystals, pink feldspar cleavage faces, harder glassy quartz, and possible black mica. Common in continental plutons and granitic terrains worldwide; a streak, hardness, and acid test would improve identification.
