sedimentary

Fine-grained brown sand or weathered soil

Unconsolidated siliciclastic sediment, likely quartz-rich sand (SiO₂) mixed with iron-oxide-coated grains

AI-generated identification · may be incorrect

Very fine to medium granular texture, brown color, dull/earthy luster, and no visible crystals or cleavage. Individual grains are likely around Mohs hardness 6–7 if quartz-rich, but hardness cannot be confirmed from this photograph; bulk density is commonly about 1.5–1.8 g/cm³ when loose.

Identified August 30, 2026More sedimentary →

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At a glance

Common name: Fine-grained brown sand or weathered soil
Scientific name: Unconsolidated siliciclastic sediment, likely quartz-rich sand (SiO₂) mixed with iron-oxide-coated grains
Category: sedimentary
Identified: August 30, 2026
Method: Standard

AI Estimated Value

$0–$5 for an ordinary sample; higher only if documented as unusual, historic, or compositionally distinctive.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Likely produced by mechanical weathering and erosion of older silicate rocks, with brown coloration from iron oxides and/or organic material. It is a modern unconsolidated deposit rather than a clearly identifiable lithified rock, so geological age is undetermined.

Uses & applications

Used as fill, landscaping material, mortar or concrete aggregate when suitably graded and tested, and occasionally in glass manufacture if sufficiently pure. Its collector value is generally negligible.

Geological facts

The image shows loose granular material rather than a solid rock specimen; several distinct minerals could be present. A microscope, magnet test, grain-size examination, and acid test would improve identification.

Field identification & locations

Common in river, dune, beach, floodplain, and weathered-soil environments worldwide. Quartz-rich grains resist scratching by steel, while magnetism suggests abundant magnetite; fizzing with dilute acid indicates carbonate grains.