mineral
Quartz-rich rock, likely milky quartz vein material
Quartz (SiO₂), possibly with iron-oxide staining and minor associated minerals
AI-generated identification · may be incorrectOff-white to pale tan, opaque to slightly translucent, with a rough, granular crystalline surface and vitreous-to-dull luster. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
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Physical properties
Off-white to pale tan, opaque to slightly translucent, with a rough, granular crystalline surface and vitreous-to-dull luster. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
Formation & geological history
Likely formed when silica-rich fluids deposited quartz in a rock fracture; the specimen’s age and exact geological setting cannot be determined from the image.
Uses & applications
Quartz is used in glass, ceramics, abrasives, and electronics; attractive pieces may be kept as decorative or collecting specimens.
Geological facts
Quartz is one of Earth’s most abundant minerals and occurs in many rock types and mineral veins.
Field identification & locations
Look for hardness that can scratch glass, lack of cleavage, and irregular fracture. Quartz veins are common worldwide; the image alone does not establish a more specific identification.
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
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Granite
Granite (Phaneritic intrusive igneous rock)
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