mineral
Likely tumbled brown mineral fragment
Indeterminate; possibly iron-stained quartz, jasper, or carnelian
AI-generated identification · may be incorrectSmall opaque-to-translucent brown chip with a dull to slightly vitreous luster and irregular rounded shape. If quartz-rich, hardness is about 7 Mohs; cleavage is absent and specific gravity is approximately 2.6.
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Physical properties
Small opaque-to-translucent brown chip with a dull to slightly vitreous luster and irregular rounded shape. If quartz-rich, hardness is about 7 Mohs; cleavage is absent and specific gravity is approximately 2.6.
Formation & geological history
Could form as silica deposited in cavities or sediment and later colored by iron oxides; exact age and origin cannot be determined from the photograph.
Uses & applications
Quartz varieties are used as ornamental stones, beads, cabochons, and occasionally industrial silica; this tiny fragment has negligible practical value.
Geological facts
The warm brown color commonly results from hematite or limonite inclusions rather than the primary mineral itself.
Field identification & locations
A hardness test, streak test, translucency check, and close examination of texture are needed: quartz will not scratch with a steel knife and leaves a white streak, while jasper is typically fully opaque. Common sources include weathered silica-rich rocks worldwide.
