Rammelsbergite

Rammelsbergite is a nickel arsenide mineral with formula NiAs₂. It forms metallic silvery to tin white to reddish orthorhombic prismatic crystals, but is usually massive in form. It has a Mohs hardness of 5.5 and a specific gravity of 7.1.

Additional recommended knowledge

What is the Correct Way to Check Repeatability in Balances?

Essential Laboratory Skills Guide

Weighing the right way

It was first described in 1854 from its type locality in the Schneeberg District in Saxony, Germany. It was named after the German chemist and mineralogist, Karl Friedrich August Rammelsberg.

References

• Webmineral
• Mindat with location data
• Mineral Galleries