How do I identify Lammerite?

Lammerite can be identified by its hardness of 3 - 4 on the Mohs scale, Dark green color. Look for these key characteristics when examining specimens.

What color is Lammerite?

Lammerite typically appears in Dark green. Color can vary depending on impurities and formation conditions.

How hard is Lammerite?

Lammerite has a hardness of 3 - 4 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

Lammerite

A variety of Minerals

What is Lammerite?

Copper arsenate (Cu3(AsO4)2·4H2O, or Cu5H2(AsO4)4·2H2O), also called copper orthoarsenate, tricopper arsenate, cupric arsenate, or tricopper orthoarsenate, is a blue or bluish-green powder insoluble in water and alcohol and soluble in aqueous ammonium and dilute acids. Its CAS number is 7778-41-8 or 10103-61-4.

Uses & Applications

Copper arsenate is an insecticide used in agriculture. It is also used as a herbicide, fungicide, and a rodenticide. It is also used as a poison in slug baits. Copper arsenate can also be a misnomer for copper arsenite, especially when meant as a pigment.

Lammerite Market Value Calculator

Estimate the market value of Lammerite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Lammerite Localities Map

See where Lammerite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview

North ZoneCentral RidgeSouth Basin

Quick Facts

Physical Properties

Color: Dark green
Hardness (Mohs): 3 - 4
Density: 5.18 g/cm³
Streak: Pale green

Chemical Properties

Chemical Formula: Cu3(AsO4)2 a solid solution is suggested basing on the data of Filatov et al. (1984), resulting in Cu3[(AsxP1-x)O4]2 (x=0.23-0.62)
Elements: As, Cu, O

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