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Wilancookite from
Ponte do Piauí claim, Piauí valley, Taquaral, Itinga, Minas Gerais, Brazil

Locality type:Claim
Classification
Species:Wilancookite
Formula:(Ba,K,Na)8(Ba,Li,□)6Be24P24O96·32H2O
Chemical Analyses:
Oxide wt%:
1
P2O536.19 %
SiO20.04 %
Al2O30.41 %
BaO34.65 %
Na2O0.09 %
K2O0.32 %
BeO12.86 %
Li2O0.50 %
H2Ocalc12.31 %
Total:97.37 %
Empirical formulae:
1(Ba7.54K0.32Na0.148.00(Ba3.04Li1.57?1.396.00Be24.08(P23.88Al0.38Si0.0324.29O96·32H2O
Sample references:
SampleReference
1Type SpecimenHatert, F., Philippo, S., Ottolini, L., Dal Bo, F., Scholz, R., Chaves, M.L.S.C., Yang, H., Downs, R.T., Menezes Filho, L.A.D. (2017): Wilancookite, (Ba,K,Na)8(Ba,Li,?)6Be24P24O96·32H2O, a new beryllophosphate with a zeolite framework. European Journal of Mineralogy: 29: 923-930
Comments:As tiny dodecahedral {1 1 0} crystals, deposited on moraesite fibres
Confirmation
Validity:Valid - Type Locality
References
References: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, page 1228; Mineralogical Magazine, 79, 1229–1236.; Hatert, F., Philippo, S., Ottolini, L., Dal Bo, F., Scholz, R., Chaves, M.L.S.C., Yang, H., Downs, R.T., Menezes Filho, L.A.D. (2017): Wilancookite, (Ba,K,Na)8(Ba,Li,◻)6Be24P24O96·32H2O, a new beryllophosphate with a zeolite framework. European Journal of Mineralogy: 29: 923-930
Associated Minerals:
Associates:Moraesite
Associated Minerals Based on Photo Data:
Moraesite1 photo of Wilancookite associated with Moraesite at this locality.
Zanazziite1 photo of Wilancookite associated with Zanazziite at this locality.
Data
Mineral Data:Click here to view Wilancookite data
Locality Data:Click here to view Ponte do Piauí claim, Piauí valley, Taquaral, Itinga, Minas Gerais, Brazil
Mineral and/or Locality  
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