mineral

Weathered quartz-rich rock fragment

Likely quartz-bearing sandstone or granitic rock; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Pale tan, irregular, dull-to-earthy surface with possible granular texture; quartz would have Mohs hardness 7, vitreous luster, no cleavage, and specific gravity about 2.65. The specimen appears weathered and may contain feldspar or iron-oxide staining.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed in the upper continental crust as sedimentary sandstone or an igneous felsic rock, then fractured and weathered at the surface; its geological age cannot be determined visually.

Uses & applications

Common material of little commercial value as a small fragment; quartz-rich rocks are used in construction aggregate, road stone, and silica production.

Geological facts

The image resolution and surrounding carpet-like background prevent reliable mineral identification; a fresh broken surface, hardness test, streak, and magnification would be useful.

Field identification & locations

Look for visible grains, quartz glassiness, feldspar cleavage, and reaction to dilute acid; sandstone usually shows cemented sand grains, while granite shows interlocking quartz and feldspar crystals. Common worldwide.