Quick Facts
Formation & Origin
Shattuckite is a relatively rare copper silicate that forms in the oxidation zone of copper ore deposits. It develops when copper-bearing solutions react with pre-existing silicate minerals, sometimes replacing chrysocolla or other copper silicates atom by atom (pseudomorphism).
The vivid blue color comes from copper in the crystal structure. Shattuckite's blue is typically deeper and more saturated than chrysocolla and lacks the turquoise-green tones of most other copper silicates.
The mineral was discovered in 1915 and named after the Shattuck Mine in Bisbee, Arizona. The finest gem-quality material comes from Namibia, where shattuckite forms mixed with chrysocolla, malachite, and quartz in spectacular multi-colored specimens. These Namibian pieces, sometimes called 'quantum quattro,' combine four or more copper minerals in a single stone.
Identification Guide
Shattuckite is identified by its vivid deep blue color, association with other copper minerals, and silky to vitreous luster. Acicular (needle-like) crystal habit is typical, often forming fibrous masses or replacing other minerals.
Distinguish from chrysocolla (softer, more green-blue, amorphous), azurite (effervesces in acid, different blue), and sodalite (not associated with copper ores). Shattuckite doesn't effervesce in acid (it's a silicate, not a carbonate), which separates it from azurite.
Spotting Fakes
Some material sold as shattuckite is actually chrysocolla, which is more common and less valuable. Shattuckite typically has a deeper, more intense blue and often shows fibrous crystal structure under magnification. Mixed specimens (shattuckite with chrysocolla, malachite, and quartz) are genuine and valued for their multi-mineral beauty. Very uniform, vivid blue pieces at low prices may be dyed chrysocolla.
Cultural & Metaphysical Traditions
Presented as cultural traditions, not scientific evidence
Shattuckite is considered one of the most powerful communication and psychic development stones. Practitioners associate it with channeling, mediumship, and receiving clear spiritual messages. The deep blue connects it to truthful expression and the ability to articulate spiritual experiences. Some traditions use it specifically for developing clairaudience (psychic hearing).
Where It's Found
Finest gem-quality material
Type locality, named after the mine
Good specimens from copper mines
Fine crystallized specimens
Price Guide
Good to Know
Scratch test: At hardness 3.5, Shattuckite can be scratched with a copper coin. Handle gently and keep away from harder stones in your collection.
Sources: Found in 4 notable locations worldwide, from Namibia to Greece.
Heft test: Shattuckite has a specific gravity of 3.8-4.1 - noticeably heavier than quartz. You'll feel the density when you pick it up.