mineral

Garnierite in Matrix

Nickel-bearing Magnesium Silicates (Garnierite)

Hardness: 2-4 (garnierite) to 7 (matrix), Color: bright green to pale lime streaks in tan/brown matrix, Luster: Vitreous to dull, Crystal Structure: Monoclinic, Cleavage: None

Identified May 27, 2026More mineral →

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Physical properties

Hardness: 2-4 (garnierite) to 7 (matrix), Color: bright green to pale lime streaks in tan/brown matrix, Luster: Vitreous to dull, Crystal Structure: Monoclinic, Cleavage: None

Formation & geological history

Formed through the intense chemical weathering of ultramafic rocks (lateritization) like serpentinites and peridotites in tropical or subtropical climates.

Uses & applications

Primarily used as a minor ore of nickel and as a decorative stone or 'healing crystal' by collectors. Frequently carved into towers or spheres.

Geological facts

The term 'Garnierite' is not a single mineral species but a generic name for various secondary nickel-magnesium silicates. It was named after Jules Garnier who discovered it in New Caledonia.

Field identification & locations

Identify by its distinctive neon green color against a stony matrix. It is commonly found in New Caledonia, Madagascar, and parts of the United States like Oregon.

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