Mineral Guide · Mineral
Xocomecatlite is a rare copper tellurite hydroxide, usually forming pale-green spherules or crusts in oxidised tellurium deposits.
Xocomecatlite is a rare copper tellurite hydroxide, usually forming pale-green spherules or crusts in oxidised tellurium deposits.
Reference formula: Cu3TeO4(OH)4. Xocomecatlite is orthorhombic with the ideal formula Cu3TeO4(OH)4. No matching public COD coordinate entry was selected, so no artificial lattice is shown. Xocomecatlite is classified with tellurites and has orthorhombic crystal symmetry. Typical hardness is 3–4 on the Mohs scale and specific gravity is approximately 3.6–3.9.
Typical colours include pale green, green, blue-green. The usual spherical, botryoidal, crusty habit and vitreous, pearly, dull lustre help describe a specimen, but colour alone is not diagnostic.
Xocomecatlite forms in or is associated with secondary oxidation zones of tellurium-rich copper-gold-silver veins. Important documented localities include the Tombstone district in Arizona, Utah, Mexico and other rare tellurium localities.
Xocomecatlite is a classic micromount mineral: delicate spherules, unusual copper-tellurium chemistry and a documented Arizona association create the value.
Soft and tellurium-bearing: keep sealed, dry and away from dust, food and children; avoid grinding and acids.
Reviewed by NotOnlyRocks Editorial Team
Last reviewed: 30 August 2026
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