Kaersutite

Kaersutite is a dark brown to black amphibole mineral with formula: NaCa₂(Mg₄Ti)Si₆Al₂O₂₃(OH)₂.

It occurs as phenocrysts in alkalic volcanic rocks; in nodules of peridotite and gabbro in alkalic basalts; in syenites, monzonites and carbonatite tuffs. Mineral association includes titanian augite, rhoenite, olivine, ilmenite, spinel, plagioclase and titanian pargasite.[1]

It was first described in 1884 and is named for Qaersut (formerly Kaersut), Umanq district in northern Greenland.[2]

References

1. ^ a b http://rruff.geo.arizona.edu/doclib/hom/kaersutite.pdf Handbook of Mineralogy
2. ^ a b http://www.mindat.org/min-2129.html Mindat: Kaersutite
3. ^ http://www.webmineral.com/data/Kaersutite.shtml Webmineral data

List of minerals