sedimentary

Weathered sandstone outcrop

Quartz-rich feldspathic sandstone, likely Pennsylvanian–Permian or younger depending on locality

AI-generated identification · may be incorrect

Typically 6–7 Mohs; pink, reddish-brown, and gray with granular texture, dull to slightly vitreous luster, and little or no cleavage. Composed mainly of quartz with feldspar, rock fragments, iron-oxide cement, and surface lichen.

Identified September 19, 2026More sedimentary →

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At a glance

Common name: Weathered sandstone outcrop
Scientific name: Quartz-rich feldspathic sandstone, likely Pennsylvanian–Permian or younger depending on locality
Category: sedimentary
Identified: September 19, 2026
Method: Standard

AI Estimated Value

Ordinary outcrop material: negligible to about $5–$20 for small labeled pieces; notable sculptural specimens may sell for $25–$100.

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

Lithified sand deposited by rivers, deltas, or wind, then compacted and cemented; differential weathering and erosion produced the ledges and balanced-looking boulders. Exact age cannot be determined from the image.

Uses & applications

Used locally as building stone, aggregate, and landscape rock; scenic outcrops are primarily valued for recreation and geology rather than specimen collecting.

Geological facts

The mushroom-shaped formations result from variable cementation, jointing, and weathering—not necessarily deliberate balancing. Lichens accentuate the rock’s mottled appearance.

Field identification & locations

Identify by visible sand grains, gritty texture, layered or massive bedding, and resistance to acid; quartz-rich sandstone commonly forms cliffs and plateaus. Common worldwide, especially in sedimentary basin regions.