igneous
Granite
Phaneritic Felsic Igneous Rock
AI-generated identification · may be incorrectHardness: 6-7 on the Mohs scale. Color: Varies widely including pink, white, gray, and black speckled. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals). Specific gravity: 2.65 - 2.75.
- Hardness
- 6-7 on the Mohs scale
- Luster
- Dull to vitreous
Identified More igneous →
Explore Granite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 on the Mohs scale. Color: Varies widely including pink, white, gray, and black speckled. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals). Specific gravity: 2.65 - 2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica and alkali metal oxides deep underground, typically over millions of years.
Uses & applications
Widely used in construction, countertops, monuments, flooring, and curbing due to its high durability and resistance to weathering.
Geological facts
Granite is the most common intrusive rock of Earth's crust and forms the core of many major mountain ranges.
Field identification & locations
Easily identified by its speckled, coarse-grained appearance containing quartz, feldspar, and mica. Found worldwide in continental shields and mountain roots.
