mineral

Shattuckite (Blue Quartz/Jasper Matrix)

Shattuckite (Copper Silicate Hydroxide - Cu5(SiO3)4(OH)2)

Hardness: 3.5 - 4; Color: Deep blue, turquoise, or greenish-blue in a lighter matrix; Luster: Silky to dull; Crystal structure: Orthorhombic (acicular); Cleavage: Perfect; Specific gravity: 4.1

Hardness: 3
Color: Deep blue, turquoise, or greenish-blue in a lighter matrix
Luster: Silky to dull

Identified March 16, 2026More mineral →

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Physical properties

Hardness: 3.5 - 4; Color: Deep blue, turquoise, or greenish-blue in a lighter matrix; Luster: Silky to dull; Crystal structure: Orthorhombic (acicular); Cleavage: Perfect; Specific gravity: 4.1

Formation & geological history

Formed as a secondary mineral in the oxidation zone of copper deposits, often by the alteration of other secondary minerals like malachite. It is typically found in massive or fibrous forms intertwined with silica.

Uses & applications

Primarily used as a collector’s mineral, in lapidary work for cabochons, and in metaphysical jewelry.

Geological facts

First discovered in 1915 at the Shattuck Mine in Bisbee, Arizona. It is often confused with chrysocolla, but shattuckite typically exhibits a more intense, darker blue color.

Field identification & locations

Identify in the field by its association with primary copper minerals (malachite, azurite) and its vibrant blue hue. Often found in Arizona (USA), Namibia, and the Democratic Republic of the Congo.

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