How do I identify Pickeringite?

Pickeringite can be identified by its hardness of 1.5 - 2 on the Mohs scale, Colourless to white color. Look for these key characteristics when examining specimens.

What color is Pickeringite?

Pickeringite typically appears in Colourless to white, light yellow, pale pink, gray; colourless in transmitted light. Color can vary depending on impurities and formation conditions.

How hard is Pickeringite?

Pickeringite has a hardness of 1.5 - 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

How to Identify Pickeringite | Properties, Meaning & Uses

What is Pickeringite?

Pickeringite is a magnesium aluminium sulfate mineral with formula MgAl2(SO4)4·22(H2O). It forms a series with halotrichite. It forms as an alteration product of pyrite in aluminium rich rocks and in coal seams. It also occurs in pyrite rich hydrothermal ore deposits in arid regions. It forms in fumaroles and in caves. It occurs with kalinite, alunogen, epsomite, melanterite, copiapite and gypsum. It was first described in 1844 for an occurrence in Cerros Pintados, Pampa del Tamarugal, Iquique Province, Tarapacá Region, Chile. It was named for American linguist and philologist John Pickering (1777–1846).

Pickeringite Market Value Calculator

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

Pickeringite Localities Map

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