mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: transparent to white, grayish, or brownish; Luster: vitreous (glassy); Crystal structure: trigonal; Cleavage: none, exhibits conchoidal fracture; Specific gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- transparent to white, grayish, or brownish
- Luster
- vitreous (glassy)
Identified More mineral →
Explore Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 7 on Mohs scale; Color: transparent to white, grayish, or brownish; Luster: vitreous (glassy); Crystal structure: trigonal; Cleavage: none, exhibits conchoidal fracture; Specific gravity: 2.65
Formation & geological history
Forms in a wide variety of geological environments, including igneous, metamorphic, and sedimentary rocks. Often crystallizes from silica-rich hydrothermal veins and pegmatites.
Uses & applications
Used in electronics (oscillators), glassmaking, abrasives, gemstones, and ornamental objects.
Geological facts
Quartz is one of the most abundant and widely distributed minerals found on Earth's continental crust.
Field identification & locations
Identified by its high hardness (scratches glass), conchoidal fracture, and lack of cleavage. Found globally in almost all rock types.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary