Kammererite

Kammererite – Mg₅(Al,Cr)(AlSi₃O₁₀)(OH)₈
Class: Silicates – Phyllosilicates
Crystal System: Monoclinic
Hardness: 2-2.5
Gypsum
Talc (1)Diamond (10)
Soft. A fingernail can scratch it.
Origin: Kop, Krom Mine, Kop Daglari Erzurum Province – Turkey
Did you know?

Chromium is the reason for the color. The same element makes emerald green and ruby red, and here, folded into a mineral that is normally grass green, it produces magenta instead. One element, three of the most saturated colors in the mineral world.