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Wilancookite

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Wilancookite
Wilancookite from Ponte do Piauí claim, Piauí valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Brazil
General
CategoryPhosphate
Formula
(repeating unit)
(Ba,K,Na)8(Ba,Li,[ ])6Be24P24O96·32H2O
IMA symbolWck[1]
Crystal systemIsometric
Crystal classTetartoidal (23)
H-M symbol: (23)
Space groupI23
Unit cella = 13.54 Å (approximated)
Identification
References[2]

Wilancookite is a very rare and complex beryllium phosphate with the chemical formula (Ba,K,Na)8(Ba,Li,[ ])6Be24P24O96·32H2O. Wilancookite was discovered in pegmatite of the Lavra Ponte do Piauí complex, Jequitinhonha, Minas Gerais, Brazil.[2][3]

Relation to other minerals

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Wilancookite is related to pahasapaite,[2] a lithium-bearing beryllium phosphate mineral.[4]

References

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  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. ^ a b c Menezes Filho, L.A.D., Hatert, F., Philippo, S., Ottolini, L., Dal Bo, F., Scholz, R., Chaves, M.L.S.C., Yang, H., and Downs, R.T., 2015. Wilancookite, IMA 2015-034. CNMNC Newsletter No. 27, October 2015, 1228; Mineralogical Magazine 79, 1229–1236
  3. ^ "Wilancookite: Wilancookite mineral information and data". Mindat.org. Retrieved 2016-03-13.
  4. ^ "Pahasapaite: Pahasapaite mineral information and data". Mindat.org. Retrieved 2016-03-13.