igneous
Banded Pegmatite / Granite Vein
Felsic intrusive igneous rock
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, featuring distinct pinkish feldspar and white quartz bands with a vitreous to earthy luster.
Identified More igneous →
Explore Banded Pegmatite / Granite Vein in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6-7 on the Mohs scale, featuring distinct pinkish feldspar and white quartz bands with a vitreous to earthy luster.
Formation & geological history
Formed from the fractional crystallization of magma injected into host rock fractures during deep crustal cooling.
Uses & applications
Utilized in crushed stone aggregate, dimensional building stone, and as a specimen for mineral collectors.
Geological facts
The distinct banding represents alternating pulses of silica-rich and alkali-rich hydrothermal fluid injection during late-stage magma crystallization.
Field identification & locations
Identify in the field by contrasting pink and white crystalline bands; commonly found in ancient cratons and mountain root zones.
