How do I identify Kröhnkite?

Kröhnkite can be identified by its hardness of 2.5 - 3 on the Mohs scale, Blue color. Look for these key characteristics when examining specimens.

What color is Kröhnkite?

Kröhnkite typically appears in Blue, greenish-blue; light blue to colourless in transmitted light. Color can vary depending on impurities and formation conditions.

How hard is Kröhnkite?

Kröhnkite has a hardness of 2.5 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

Kröhnkite

A variety of Minerals

What is Kröhnkite?

Kröhnkite ( Na2Cu(SO4)2•2H2O ) is a rare copper sulfate mineral named after B. Kröhnke who first researched it. Kröhnkite may be replaced by Saranchinaite, the anhydrous form of the mineral, if heated to temperatures above 200 °C (392 °F)

Kröhnkite Market Value Calculator

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

Kröhnkite Localities Map

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

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North ZoneCentral RidgeSouth Basin

Key Characteristics

Formation of Kröhnkite

Kröhnkite was first researched after an occurrence in the Chuquicamata Mine, Chile, and has been reported from a number of locations in the Atacama region. Associated minerals in the discovery location include atacamite, blodite, chalcanthite, antlerite and natrochalcite. It occurs in the oxidized zone of copper deposits in arid environments.