How do I identify Mozarkite?

Mozarkite can be identified by its hardness of 6.5 - 7 on the Mohs scale, Gray color. Look for these key characteristics when examining specimens.

What color is Mozarkite?

Mozarkite typically appears in Gray, white; black, brown and other colors due to staining. Color can vary depending on impurities and formation conditions.

How hard is Mozarkite?

Mozarkite has a hardness of 6.5 - 7 on the Mohs scale. This gives it moderate hardness.

Mozarkite

A variety of Chert

What is Mozarkite?

A variety of flint, mozarkite is a very compact and hard material known for its colorful swirls and patterns. Found only in the state of Missouri (USA), it was adapted as the Missouri state rock in 1967. This semi-precious stone can be finely polished so it's regularly used for cabochons and tumbled stones.

Etymology & Origins

The name is a portmanteau, formed from Mo (Missouri), zark (Ozarks), and ite (meaning rock).

Uses & Applications

It has won distinction as a particular form or variety of chert because of its unique variation of colors and its ability to take a high polish. It has the hardness of 7-7.5 on the Mohs scale, which qualifies it as a suitable material for semi-precious gemstone, and has a density of about 2.65 g/cm³. Typically, the colors are different hues of red, pink, and purple with varying tints of green, gray and brown. It is collected and admired by lapidarists across the country.