Geikielite

Geikielite

Geikielite

Magnesium titanium oxide mineral

Geikielite is a magnesium titanium oxide mineral with formula: MgTiO3. It is a member of the ilmenite group. It crystallizes in the trigonal system forming typically opaque, black to reddish black crystals.

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It was first described in 1892[5] for an occurrence in the Ceylonese gem bearing gravel placers. It was named for Scottish geologist Sir Archibald Geikie (1835–1924).[4] It occurs in metamorphosed impure magnesian limestones, in serpentinite derived from ultramafic rocks, in kimberlites and carbonatites. Associated minerals include rutile, spinel, clinohumite, perovskite, diopside, serpentine, forsterite, brucite, hydrotalcite, chlorite and calcite.[2]

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]
    Handbook of Mineralogy
  3. [3]
    Geikielite on Mindat.org
  4. [4]
    Geikielite on Webmineral
  5. [5]
    Fletcher, L. (1892). "Geikielite and Baddeleyite, Two New Mineral Species". Nature. 46 (1200): 620–621. Bibcode:1892Natur..46..620F. doi:10.1038/046620b0.

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