mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectLikely a rough, translucent-white quartz piece with a vitreous luster and irregular fracture; quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65. The photo is not sharp enough to confirm the identification or assess the specimen’s surface fully.
Identified More mineral →
Explore Milky quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Likely a rough, translucent-white quartz piece with a vitreous luster and irregular fracture; quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65. The photo is not sharp enough to confirm the identification or assess the specimen’s surface fully.
Formation & geological history
Quartz commonly crystallizes from silica-rich fluids in veins and cavities, or forms in igneous and metamorphic rocks; it occurs across a wide range of geological ages.
Uses & applications
Quartz is used in glassmaking, electronics, abrasives, and decorative objects; attractive pieces may be polished or collected.
Geological facts
Quartz is one of Earth’s most abundant minerals and produces a conchoidal fracture rather than breaking along cleavage planes.
Field identification & locations
Look for hardness sufficient to scratch glass, lack of cleavage, and a glassy fracture; common sources include quartz veins worldwide. Similar pale stones can include calcite, so a scratch test can help distinguish them.
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