Hafnon

Hafnon

Hafnon

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Hafnon is a hafnium nesosilicate mineral, chemical formula (Hf,Zr)SiO4 or (Hf,Zr,Th,U,Y)SiO4.[2] In natural zircon ZrSiO4 part of the zirconium is replaced by the very similar hafnium and so natural zircon is never pure ZrSiO4. A zircon with 100% hafnium substitution can be made synthetically and is hafnon.

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Hafnon occurs as transparent red to red orange tetragonal crystals with a hardness of 7.5.[3][4]

Hafnon occurs naturally in tantalum-bearing granite pegmatites in the Zambezia district, Mozambique and in weathered pegmatites at Mount Holland, Western Australia.[5] It has also been reported from locations in Ontario, Quebec and Manitoba, Canada; North Carolina, United States; and in Zimbabwe.[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]
    http://www.minerals.net/mineral/silicate/neso/zircon/hafnon.htm Minerals.net
  3. [3]
    http://www.mindat.org/min-1792.doc Mindat
  4. [4]
    "Hafnon Mineral Data". webmineral.com. Retrieved 2021-01-31.
  5. [5]
    http://www.handbookofmineralogy.org/pdfs/Hafnon.PDF Archived 2021-10-20 at the Wayback Machine Handbook of Mineralogy


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