How do I identify Cronstedtite?

Cronstedtite can be identified by its hardness of 3.5 on the Mohs scale, Black color. Look for these key characteristics when examining specimens.

What color is Cronstedtite?

Cronstedtite typically appears in Black, dark brown-black, green-black. Color can vary depending on impurities and formation conditions.

How hard is Cronstedtite?

Cronstedtite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.

How to Identify Cronstedtite | Properties, Meaning & Uses

What is Cronstedtite?

Cronstedtite is a complex iron silicate mineral belonging to the serpentine group of minerals. Its chemical formula is Fe2Fe(Si,FeO5)(OH)4. It was discovered in 1821 and named in honor of Swedish mineralogist Axel Fredrik Cronstedt (1722–1765). It has been found in Bohemia in the Czech Republic and in Cornwall, England. Cronstedtite is a major constituent of CM chondrites, a carbonaceous chondrite group exhibiting varying degrees of aqueous alteration. Cronstedtite abundance decreases with increasing alteration.

Cronstedtite Market Value Calculator

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

Cronstedtite Localities Map

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