metamorphic

Garnet-bearing quartz (likely almandine garnet in milky quartz)

Quartz (SiO₂) with garnet, likely almandine (Fe₃Al₂(SiO₄)₃)

AI-generated identification · may be incorrect

White to cream, massive quartz matrix with dark reddish-brown, subrounded garnet crystals; quartz has Mohs hardness 7 and vitreous luster, garnet is typically 6.5–7.5. The photo does not show crystal faces clearly enough to confirm garnet species or cleavage.

Identified October 13, 2026More metamorphic →

Explore Garnet-bearing quartz (likely almandine garnet in milky quartz) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Quartz and garnet commonly form during regional metamorphism of aluminous rocks, or in metamorphic veins; garnet growth may date to the host rock’s metamorphic event, whose age cannot be determined from the image.

Uses & applications

Primarily a collectible specimen; garnet is also used as an abrasive and, when gem-quality, in jewelry. Quartz is widely used in glass, electronics, and construction.

Geological facts

Garnet is a mineral group, not a single mineral; its dark appearance here may reflect iron-rich garnet or surface alteration.

Field identification & locations

Look for hard, glassy quartz surrounding distinct dark red-brown grains; garnet typically lacks obvious cleavage. Garnet-bearing metamorphic rocks occur worldwide, including in the Adirondacks, New England, Scandinavia, and India.