mineral
Quartz cluster
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectThe specimen appears to be a milky-to-clear quartz cluster with translucent, glassy surfaces and irregular crystal growth. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and a specific gravity of about 2.65.
Identified More mineral →
Explore Quartz cluster in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
The specimen appears to be a milky-to-clear quartz cluster with translucent, glassy surfaces and irregular crystal growth. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and a specific gravity of about 2.65.
Formation & geological history
Quartz forms when silica-rich fluids crystallize in fractures, cavities, or veins; it occurs in rocks of many ages and geological settings. The photo does not reveal its precise geological age or locality.
Uses & applications
Quartz is used in glass and electronics, while attractive clusters are collected or displayed as decorative specimens.
Geological facts
Quartz is one of Earth’s most abundant minerals and can occur in many colors depending on impurities and inclusions.
Field identification & locations
Look for glassy luster, hardness sufficient to scratch ordinary glass, and lack of cleavage; the image alone cannot confirm the identification. Similar pale minerals, especially calcite, can be distinguished by calcite’s lower hardness and acid reaction.
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