How do I identify Fontarnauite?

Fontarnauite can be identified by its hardness of 2.5 - 3 on the Mohs scale, colorless to light brown color. Look for these key characteristics when examining specimens.

What color is Fontarnauite?

Fontarnauite typically appears in colorless to light brown. Color can vary depending on impurities and formation conditions.

How hard is Fontarnauite?

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

Fontarnauite

A variety of Minerals

What is Fontarnauite?

Fontarnauite is a relatively recently described, rare sulfate, borate mineral with the chemical formula (Na,K)2(Sr,Ca)(SO4)[B5O8(OH)]·2H2O. It is found in an evaporite boron deposit. It coexists with other evaporite boron minerals, especially probertite. It is monoclinic, crystallizing in the space group P21/c. It was named for Ramon Fontarnau i Griera, a materials scientist of the University of Barcelona.

Fontarnauite Market Value Calculator

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