igneous
Weathered granitic rock
Granite, chiefly quartz + feldspar + mica; possibly a pale granodiorite
AI-generated identification · may be incorrectCoarse, light gray–pink, speckled texture with visible interlocking grains and granular luster. Typical hardness is about 6–7 Mohs; no obvious cleavage as a whole rock, though feldspar and mica grains cleave. Specific gravity is roughly 2.6–2.7.
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Physical properties
Coarse, light gray–pink, speckled texture with visible interlocking grains and granular luster. Typical hardness is about 6–7 Mohs; no obvious cleavage as a whole rock, though feldspar and mica grains cleave. Specific gravity is roughly 2.6–2.7.
Formation & geological history
An intrusive igneous rock that crystallized slowly from magma deep underground, commonly during Precambrian to Mesozoic continental crust formation; surface weathering has rounded and roughened it.
Uses & applications
Used widely as crushed aggregate, building stone, paving, monuments, and countertops; this weathered fragment has modest collector value.
Geological facts
The image does not show clear layering or fossils, supporting an igneous identification. The pale color suggests abundant feldspar and quartz, while dark flecks are likely biotite or hornblende.
Field identification & locations
Identify it by its visible interlocking crystals, hardness, and lack of sedimentary bedding. Granite and related rocks are plausible around the Ethiopian Highlands near 9.7°N, 40.5°E, although volcanic rocks are also common there.
