Great South Gems & Minerals

• Adamite specimens (Mexico) •

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•Adamite specimens (Mexico)

Basic arsenate of zinc; some copper may be present.

Hardness 3-1/2.

Orthorhombic crystals, usually prismatic or horizontally elongated showing here as drusy on crust matrix.

Adamite is usually found with limonite and calcite in the so-called oxidized zone of lode hydrothermal replacement deposites. See en.wikipedia.org/wiki/adamite

Fluoresces yellow-green. Two sizes available. Mexico.

Adamite is a zinc arsenate hydroxide mineral. It is a mineral that typically occurs in the oxidized or weathered zone abore zinc or occurences. Pure adamite is colorless but usually it may be tinted yellow or green from compounds in the solutions from which the material formed. The green color shown in these specimens is a result of copper ore substitutions in the mineral structure.

Adamite was named after the French mineralogist Gilbert-Joseph Adam (1795-1881). It was first described in 1866. Hardness 3.5 to 4.5 on the mohs hardness scale. Adamite crystals are transparent to translucent and forms in the orthorhombic crystal system. Adamite strongly fluoresces green in short and long wave lights.

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