Kaersutite

Kaersutite

Kaersutite

Calcic titanium bearing amphibole mineral

Kaersutite is a dark brown to black double chain calcic titanium bearing amphibole mineral with formula: NaCa2(Mg3Ti4+Al)(Si6Al2)O22(O)2.[6]

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Ferro-kaersutite is the 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

  1. [1]
    Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. [2]
    "Kaersutite" (PDF). Handbook of Mineralogy. Retrieved 2024-03-21.
  3. [3]
    http://www.mindat.org/min-2129.doc Mindat: Kaersutite
  4. [4]
    http://www.webmineral.com/data/Kaersutite.sdoc Webmineral data
  5. [5]
    "IMA Master List". Archived from the original on 2015-01-05. Retrieved 2014-05-12.
  6. [6]
    http://www.minsocam.org/msa/ammin/toc/Abstracts/2012_Abstracts/ND12_Abstracts/Hawthorne_p2031_12.pdf
  7. [7]
    Ferro-kaersutite on Mindat


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