mineral

Iron-stained Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Hardness: 7 on Mohs scale; Color: Clear to white with orange-red banding; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Clear to white with orange-red banding
Luster: Vitreous to greasy

Identified June 27, 2026More mineral →

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Physical properties

Formation & geological history

Formed via hydrothermal activity where silica-rich fluids cooled in veins and fractures. The red coloration is due to the secondary infiltration of iron oxides (hematite) during or after the primary quartz formation.

Uses & applications

Used as a gemstone when polished, as a decorative garden stone, and in metaphysical collecting. Industrial quartz is used in glass making and electronics.

Geological facts

The red color is caused by rust (iron oxide) trapped between or within the quartz crystals. These are often referred to as 'Suncatcher' or 'Fire Quartz' in the mineral trade.

Field identification & locations

Identify in the field by its ability to scratch glass, its translucent nature, and the lack of cleavage planes. Commonly found in mountainous regions, riverbeds, and desert washes globally.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral