igneous
Diorite
Intermediate intrusive igneous rock
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, speckled salt-and-pepper appearance with white plagioclase feldspar and dark hornblende, dull to sub-vitreous luster, phaneritic texture.
Identified More igneous →
Explore Diorite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6-7 on Mohs scale, speckled salt-and-pepper appearance with white plagioclase feldspar and dark hornblende, dull to sub-vitreous luster, phaneritic texture.
Formation & geological history
Formed by the slow cooling of intermediate magma beneath the Earth's surface, typically in subduction zone settings.
Uses & applications
Used widely in construction as crushed stone, dimension stone, and for decorative facing panels.
Geological facts
Ancient civilizations such as the Egyptians and Mesopotamians frequently used diorite for carving statues and artifacts due to its extreme toughness.
Field identification & locations
Identified by its balanced contrasting black and white mineral grains; commonly found in major mountain belts worldwide.
