Kaersutite
| Kaersutite | ||
|---|---|---|
2V angle 66–82° | | |
| References | [2][3][4][5] | |
Kaersutite is a dark brown to black double chain calcic titanium bearing amphibole mineral with formula: NaCa2(Mg3Ti4+Al)(Si6Al2)O22(O)2.[6]
divalent iron rich endmember of the kaersutite group, with the iron replacing magnesium in the structure.[7]
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.[2]
It was first described in 1884 and is named for Qaersut (formerly Kaersut), Umanq district in northern Greenland.[3]
References
- S2CID 235729616.
- ^ a b "Kaersutite" (PDF). Handbook of Mineralogy. Retrieved 2024-03-21.
- ^ a b http://www.mindat.org/min-2129.html Mindat: Kaersutite
- ^ http://www.webmineral.com/data/Kaersutite.shtml Webmineral data
- ^ "IMA Master List". Archived from the original on 2015-01-05. Retrieved 2014-05-12.
- ^ http://www.minsocam.org/msa/ammin/toc/Abstracts/2012_Abstracts/ND12_Abstracts/Hawthorne_p2031_12.pdf
- ^ Ferro-kaersutite on Mindat
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