Formula: Cu₃(SO₄)(OH)₄

Species: Sulfates

Colour: Emerald-green to blackish-green, also light green.

Lustre: Vitreous

Hardness: 3½

Specific Gravity: 3.88

Crystal System: Orthorhombic

Name: Named in 1889 by William F. Hillebrand after the type locality at the Antler Mine, Mohave Co., Arizona, USA.

Type Locality: Antler Mine (Spuyten Duyvel Mine), Pine Peak, Hualapai Mining District, Hualapai Mountains, Mohave County, Arizona, USA. A secondary mineral occurring in the oxidized zone of copper deposits in arid regions. Less common than the related and sometimes visually similar brochantite with which it may be confused.

A secondary mineral occurring in the oxidized zone of copper deposits in arid regions. Less common than the related and sometimes visually similar brochantite with which it may be confused.Antlerite is a common corrosion product on bronze sculptures located in urban areas, where atmospheric sulfur dioxide (a common pollutant) is present. Antlerite forms mainly in sheltered areas where weathering is low, which permits accumulation of copper ions and enhancement in the acidity of water films. In exposed areas, the main corrosion product is brochantite.