Adamite is a zinc arsenate hydroxide mineral, Zn 2 As O 4 O H. It is a mineral that typically occurs in the oxidized or weathered zone above zinc ore occurrences. Pure adamite is colorless, but usually it possess yellow color due to Fe compounds admixture.

2023年8月24日 · Adamite is a mineral that belongs to the arsenate class of minerals. Its chemical formula is usually written as Zn2 (AsO4) (OH), indicating its composition of zinc, arsenic, oxygen, and hydroxide ions.

The Zn analogue of Olivenite. In terms of chemistry, but not structure, adamite is an arsenic equivalent (stoichiometrically similar to) of tarbuttite. The two minerals are not analogous. Adamite forms a solid solution with the copper arsenate Olivenite, and the intermediate, structurally distinct member Zincolivenite.

Adamite was first described in Chile (Chanarcillo) by the French mineralogist G. Adam. The main world deposits are in Mexico (Ojuela, Mapimi and Durango), in Namibia (Tsumeb) with cobalt-bearing specimens. Recently, adamite has been found in China (Gansu). Most of the time, adamite occurs as geode crystals in limonite.

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Adamite occurs in a secondary mineral in the oxidized zone of zinc, and arsenic-bearing hydrothermal mineral deposits. It is often associated with minerals such as smithsonite, …

MINERALOGY, PROPERTIES, OCCURRENCE: Adamite [basic zinc arsenate, Zn2 (AsO4) (OH)], pronounced AHH-dem-ite, occurs in the upper, oxidized zones of zinc-rich mineral deposits in association with calcite and limonite. It has a Mohs hardness of 3.5, good cleavage in one direction, and a specific gravity of 4.3-4.5.

2012年1月16日 · Adamite is a zinc arsenate hydroxide mineral, Zn 2 (AsO 4) (OH). It is a mineral that typically occurs in the oxidized or weathered zone above zinc ore occurrences. Pure adamite is colorless, but usually it possess yellow color due to Fe compounds admixture.

The primary source for gem quality adamite is the Ojeula Mine in Durango, Mexico. Mineralogically it is a secondary zinc mineral forming in hydrothermal deposits associated with …

Adamite is a zinc arsenate mineral. While pure Adamite is colorless, iron impurities give Adamite a common yellow hue. Green or turquoise colored adamite arising from copper impurities can also occur. The mineral is often found in association with hemimorphite, smithsonite, and other zinc-copper minerals in oxidized zinc deposits.