igneous
Likely pink granite or granitic pegmatite fragment
Granite; mainly quartz (SiO₂), feldspar, and mica
AI-generated identification · may be incorrectCoarse, pale pink-brown, speckled texture with a dull to slightly granular luster. Likely Mohs 6–7; quartz and feldspar are interlocking, with no obvious cleavage visible. Exact identification is limited by the lighting and image.
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Physical properties
Coarse, pale pink-brown, speckled texture with a dull to slightly granular luster. Likely Mohs 6–7; quartz and feldspar are interlocking, with no obvious cleavage visible. Exact identification is limited by the lighting and image.
Formation & geological history
Formed by slow cooling of silica-rich magma deep underground, typically during Precambrian to Paleozoic crustal events. The Kansas City area lies on sedimentary bedrock, so this may be transported glacial/alluvial material, landscaping stone, or construction debris rather than locally formed granite.
Uses & applications
Used extensively as crushed aggregate, building stone, monuments, countertops, and decorative landscaping rock; attractive pieces may be collected but this specimen appears common.
Geological facts
Pink coloration usually comes from potassium feldspar; gray translucent grains are quartz, and dark flecks may be biotite or amphibole. It may also be a weathered pink granite or granitic gneiss.
Field identification & locations
Look for visible interlocking quartz, pink/white feldspar, and dark mica; it should scratch glass but not be scratched by a steel knife. Common sources include glacial deposits, river gravels, and imported landscaping stone around the central United States.
