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Betafite Group from
Black River pegmatite, Republic, Marquette Co., Michigan, USA

Locality type:Pegmatite
Classification
Species:'Betafite Group' (not an IMA approved species)
Formula:A2(Ti,Nb)2O6Z
Confirmation
Validity:Believed Valid
References
References:Buchholz, T.W., Falster, A.U. and Simmons, W.B. (2013) Accessory mineralogy of the Black River pegmatite and Humboldt granite, Marquette County, Michigan. The 40th Rochester Mineralogical Symposium, Contributed Papers in Specimen Mineralogy, 9-10.
Data
Mineral Data:Click here to view Betafite Group data
Locality Data:Click here to view Black River pegmatite, Republic, Marquette Co., Michigan, USA
 
Mineral and/or Locality  
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