mineral
Milky quartz crystal
Quartz (SiO₂), likely a naturally terminated crystal
AI-generated identification · may be incorrectHardness 7 Mohs; translucent white to colorless, vitreous luster, hexagonal crystal structure, and no cleavage (uneven fracture). The image suggests a small rough crystal, though its exact identity cannot be confirmed visually.
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Physical properties
Hardness 7 Mohs; translucent white to colorless, vitreous luster, hexagonal crystal structure, and no cleavage (uneven fracture). The image suggests a small rough crystal, though its exact identity cannot be confirmed visually.
Formation & geological history
Quartz crystallizes from silica-rich fluids in veins and cavities, or from cooling magma; it occurs in rocks of many ages and geological settings.
Uses & applications
Commonly collected and used for carvings, decorative objects, and jewelry; quartz is also important in glassmaking and electronics.
Geological facts
Quartz is one of Earth’s most abundant minerals and often forms six-sided prismatic crystals with pointed terminations.
Field identification & locations
Look for glassy luster, hardness sufficient to scratch glass, and lack of cleavage; common worldwide, especially in quartz veins and pegmatites. The pictured piece appears to be a small milky quartz point.
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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
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous