igneous
Granite Pebble
Intrusive Igneous Rock
Hardness of 6-7 on the Mohs scale, speckled grey and green color, vitreous to dull luster, phaneritic crystal structure with visible interlocking grains of quartz, feldspar, and biotite mica, specific gravity around 2.65-2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, speckled grey and green color, vitreous to dull luster, phaneritic crystal structure with visible interlocking grains of quartz, feldspar, and biotite mica, specific gravity around 2.65-2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma deep beneath the Earth's crust, typically over millions of years during various geological eras.
Uses & applications
Used in construction, landscaping, as decorative gravel, and for road aggregate.
Geological facts
Granite is the most common rock type in the Earth's continental crust and is frequently used as a benchmark for durability in architectural applications.
Field identification & locations
Can be identified in the field by its interlocking mineral crystals, particularly the translucent or smoky quartz grains and pink or white feldspar. Found worldwide in mountainous regions and riverbeds.
