mineral
Milky quartz fragments
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectWhite to translucent, glassy luster, with irregular to roughly crystalline surfaces; Mohs hardness 7, no cleavage, and conchoidal fracture. The image does not show enough detail to confirm crystal form or specific gravity.
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Physical properties
White to translucent, glassy luster, with irregular to roughly crystalline surfaces; Mohs hardness 7, no cleavage, and conchoidal fracture. The image does not show enough detail to confirm crystal form or specific gravity.
Formation & geological history
Quartz crystallizes from silica-rich fluids or magma and is common in veins and pegmatites across many geological ages. These pieces appear to be natural fragments, but their source cannot be determined from the image.
Uses & applications
Quartz is used in glassmaking, electronics, construction aggregate, and decorative or collectible specimens.
Geological facts
Quartz is one of Earth’s most abundant minerals and often forms hexagonal crystals, though broken fragments may not show that shape.
Field identification & locations
Milky quartz is identified by its white translucence, glassy shine, and hardness sufficient to scratch ordinary glass. It occurs worldwide, commonly in veins and granite-rich regions.
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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