igneous
Pegmatitic granite (likely pink granite)
Coarse-grained granite; mainly quartz (SiO₂), feldspar, and mica
AI-generated identification · may be incorrectLight pink-white, black-speckled, and visibly coarse crystalline, with vitreous quartz, feldspar cleavage, and micaceous flakes; typical hardness is about 6–7 Mohs and specific gravity 2.63–2.75.
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Physical properties
Light pink-white, black-speckled, and visibly coarse crystalline, with vitreous quartz, feldspar cleavage, and micaceous flakes; typical hardness is about 6–7 Mohs and specific gravity 2.63–2.75.
Formation & geological history
An intrusive igneous rock formed by slow cooling of silica-rich magma deep underground, commonly during Precambrian to Phanerozoic continental-crust events; the apparent weathering and irregular shape are likely natural or collected surface features.
Uses & applications
Widely used as dimension stone, countertops, monuments, aggregate, landscaping stone, and occasionally as a host for collectible feldspar, quartz, or mica crystals.
Geological facts
The pink color generally comes from potassium feldspar, while black minerals are commonly biotite or amphibole; the pale translucent grains are quartz. Exact identification would benefit from a fresh broken surface and mineral tests.
Field identification & locations
Identify it by interlocking visible quartz, pink/white feldspar, and dark mica without layering or foliation; common worldwide in continental shields and granite plutons. Typical hand specimens are worth about $5–$30, or $30–$100+ if unusually coarse-grained or crystal-rich.
