sedimentary

Banded Sandstone / Quartzite with Mineral Veins

Sedimentary rock (Quartz arenite with iron oxide/silica banding)

AI-generated identification · may be incorrect

Hardness of 6-7 on the Mohs scale, predominantly tan, brown, and dark gray banding, vitreous to dull luster, granular to cryptocrystalline structure, specific gravity around 2.65.

Identified August 1, 2026More sedimentary →

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Physical properties

Hardness of 6-7 on the Mohs scale, predominantly tan, brown, and dark gray banding, vitreous to dull luster, granular to cryptocrystalline structure, specific gravity around 2.65.

Formation & geological history

Formed from the accumulation, compaction, and cementation of quartz sand grains in marine, desert, or river environments over millions of years, often subsequently altered by mineral-rich hydrothermal fluids filling fractures.

Uses & applications

Used primarily as decorative landscaping stones, raw material for gravel, and collected by rockhounds and lapidary hobbyists.

Geological facts

The distinct dark bands typically indicate iron oxide or manganese staining that has seeped through micro-fractures in the parent rock over geological timescales.