Weathered granite or granitic gneiss

Coarse-grained, pale gray to tan, with visible quartz/feldspar and dark mica; vitreous to dull luster, no obvious cleavage as a whole, Mohs hardness about 6–7, specific gravity roughly 2.6–2.7.

Likely crystallized slowly from silica-rich magma deep in the crust, commonly during Precambrian to younger continental mountain-building events; surface weathering rounded and stained the specimen. The image is insufficient to distinguish massive granite from weakly foliated granitic gneiss with certainty.

Used extensively as dimension stone, countertops, monuments, aggregate, and landscaping rock; attractive polished pieces are collectible but this small weathered fragment has little commercial value.

Granite’s interlocking crystals resist erosion, while feldspar commonly alters to tan or whitish clay minerals, producing the visible weathered surface.

Identify it by its coarse interlocking texture, abundant light feldspar/quartz, and scattered dark mica; unlike sandstone, it lacks obvious rounded grains or bedding. Common worldwide, especially in continental shields and mountain belts.