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 Kaersutite

Reset

Kaersutite

Kaersutite

The type locality at Qaersut, which was formerly called Kaersut, in Greenland, is the namesake for this mineral. It occurs “as phenocrysts in alkalic volcanic rocks, in gabbroic and peridotitic nodules in alkalic basalts, in syenites, monzonites, carbonatite tuffs, and alkalic gabbros.” Localites include in Greenland, Italy, the Czech Republic, the United States, Canada, Japan, and New Zealand among other localities.

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

Formula
NaCa2(Mg4Ti)(Si6Al2)O22O(OH) 
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Vitreous - Resinous 
Color
dark brown, black 
Streak
brownish gray 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
5-6 
WebMineral
View Kaersutite 
Mindat
View Kaersutite 

Kaersutite from Nickenicher Sattel, Eifel Mountains, Germany

Kaersutite
            from Nickenicher Sattel, Eifel Mountains, Germany

Orange long thin prismatic Kaersutite crystals to 3mm long covering volcanic matrix.

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