mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Mineralpedia Details for Cobaltkoritnigite

Reset

Cobaltkoritnigite

Cobaltkoritnigite

Named as the cobalt analogue of the mineral koritnigite. Cobaltkoritnigite is a rare mineral that can be found as a weathering product of glaucodot and as an alteration product of cobaltite at two of its German localities. Additional localities for the mineral include in the Czech Republic and newer localities in Japan and Morocco. Associated minerals include erythrite-kottigite, sphaerocobaltite, pitticite, glaucodot, lollingite-safflorite, arsenopyrite, quartz, cobaltite, calcite, and baryte.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/cobaltkoritnigite.pdf

Formula
Co(AsO3OH)┬ĚH2
Crystal System
Triclinic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
dark pink, purple red, purple 
Streak
reddish white 
Class
Triclinic - Pinacoidal 
Hardness
2-3 
WebMineral
View Cobaltkoritnigite 
Mindat
View Cobaltkoritnigite 

Cobaltkoritnigite from Bou Azzer dist., Anti-Atlas, Morocco

Cobaltkoritnigite
            from Bou Azzer dist., Anti-Atlas, Morocco

Red-violet rosettes of tiny (less than 0.2) Cobaltkoritnigite. Probably post mine as specimens from Vein No. 2 were collected on the dumps. This mineral is sometimes confused with Erythrite although the two can be distinguished by their color. Identified by G. Favreau.

Click thumbnail images for larger view.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2020 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map