mineral

Quartz with Hematite Inclusions

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Hardness: 7 (Quartz) and 5.5-6.5 (Hematite). Color: White/translucent base with reddish-brown or rusty spots. Luster: Vitreous to dull. Crystal structure: Trigonal/Hexagonal. Cleavage: Indistinct.

Hardness: 7 (Quartz) and 5
Color: White/translucent base with reddish-brown or rusty spots
Luster: Vitreous to dull

Identified April 25, 2026More mineral →

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Physical properties

Hardness: 7 (Quartz) and 5.5-6.5 (Hematite). Color: White/translucent base with reddish-brown or rusty spots. Luster: Vitreous to dull. Crystal structure: Trigonal/Hexagonal. Cleavage: Indistinct.

Formation & geological history

Formed in hydrothermal veins or as a secondary mineral deposit where iron-rich fluids interact with cooling silica-rich solutions. Often found in Precambrian formations but can occur in various geological ages.

Uses & applications

Primary use as collector specimens, decorative lapidary work (cabochons), and sometimes used in metaphysical healing practices. The hematite content is generally too low for industrial iron ore extraction.

Geological facts

The reddish-brown color is caused by minute particles of hematite trapped within the quartz crystal lattice during its growth, or as a coating in cracks within the stone. In its crystalline form, this is often called 'Ferruginous Quartz'.

Field identification & locations

Identify in the field by checking for the hardness of quartz (cannot be scratched by a steel blade) and the characteristic rusty-red color that doesn't wash off. Commonly found in areas with metamorphic activity or near iron ore deposits.

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