mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectMohs hardness 7; white to cream with a vitreous, locally sugary luster. Trigonal crystal structure, no cleavage, and uneven to conchoidal fracture; the specimen appears to be a small rough crystalline fragment.
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Physical properties
Mohs hardness 7; white to cream with a vitreous, locally sugary luster. Trigonal crystal structure, no cleavage, and uneven to conchoidal fracture; the specimen appears to be a small rough crystalline fragment.
Formation & geological history
Quartz crystallizes from silica-rich fluids in veins and cavities, or from cooling magma. Its exact geological age and setting cannot be determined from the image.
Uses & applications
Commonly used in glassmaking, electronics, and abrasives; attractive pieces are collected or used in simple jewelry and crafts.
Geological facts
Quartz is one of Earth’s most abundant minerals and often occurs with feldspar and mica.
Field identification & locations
Look for its glassy sheen, hardness (it can scratch ordinary glass), and lack of cleavage; it is widespread in many rock types worldwide. The image alone cannot establish the precise identification.
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Sandstone (with potential mineral staining/concretions)
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Tumbled granite
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igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Unidentified pink-and-gray mineral or rock specimen
Undetermined; the image is too blurry for reliable identification
mineral