igneous
Granite Pebble
Granite
AI-generated identification · may be incorrectHardness: 6-7 on Mohs scale. Color: mottled orange, pink, white, gray, and black. Luster: vitreous to dull (depending on polish/weathering). Crystal structure: phaneritic (visible crystals).
- Hardness
- 6-7 on Mohs scale
- Color
- mottled orange, pink, white, gray, and black
- Luster
- vitreous to dull (depending on polish/weathering)
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Physical properties
Hardness: 6-7 on Mohs scale. Color: mottled orange, pink, white, gray, and black. Luster: vitreous to dull (depending on polish/weathering). Crystal structure: phaneritic (visible crystals).
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface. This specific specimen has been rounded by water action, likely in a river or beach environment.
Uses & applications
Commonly used in construction, landscaping, and as decorative aggregate. Tumbled or polished stones are collected by rockhounds.
Geological facts
Granite is one of the most abundant rocks in the continental crust. The distinctive orange/pink coloration comes from orthoclase feldspar.
Field identification & locations
Identified by its visible interlocking crystals of quartz, feldspar, and mica or amphibole. Commonly found worldwide in glaciated areas, riverbeds, and beaches.
