metamorphic

Iron-stained quartz vein rock

Quartz-rich rock with iron-oxide/hydroxide coatings (hematite/goethite); exact host rock undetermined

AI-generated identification · may be incorrect

Visible gray-white granular quartz and rusty-brown iron staining; likely Mohs 7 for quartz, vitreous to dull luster, with no obvious cleavage. The photo does not show enough detail to determine the host rock or crystal structure confidently.

Identified September 25, 2026More metamorphic →

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Physical properties

Formation & geological history

Likely formed when silica-rich fluids deposited quartz in fractures, followed or accompanied by iron-oxide staining from weathering. The age and precise geological setting cannot be determined from the image alone.

Uses & applications

Primarily a teaching or collecting specimen; quartz-bearing rock may be used decoratively, while this piece appears unsuitable for gemstone or industrial use.

Geological facts

Rusty colors commonly result when iron-bearing minerals oxidize, leaving hematite or goethite coatings on quartz and surrounding rock.

Field identification & locations

Look for hard, glassy quartz grains or veins and reddish-brown iron staining; quartz should scratch glass. Similar material occurs in many quartz-vein and weathered-rock settings worldwide.