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THE PYROCHLORE SUPERGROUP OF MINERALS: NOMENCLATURE
(MINERALOGICAL ASSOC CANADA, 2010)
A new scheme of nomenclature for the pyrochlore supergroup, approved by the CNMNC-IMA, is based on the ions at the A, B and Y sites. What has been referred to until now as the pyrochlore group should be referred to as the ...
Fluorcalciomicrolite, (Ca,Na,□)2Ta2O6F, a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
(Mineralogical SocietyTwickenham, 2013-10)
Fluorcalciomicrolite, (Ca,Na,□)2Ta2O6F, is a new microlite-group, pyrochlore supergroup mineral approved by the CNMNC (IMA 2012-036). It occurs as an accessory mineral in the Volta Grande pegmatite, Nazareno, Minas Gerais, ...
Hydrokenomicrolite, (□,H2O)2Ta2(O,OH)6(H2O), a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
(Mineralogical Society of AmericaChantilly, 2013-02)
Hydrokenomicrolite, (□,H2O)2Ta2(O,OH)6(H2O) or ideally □2Ta2[O4(OH)2](H2O), is a new microlite-group mineral approved by the CNMNC (IMA 2011-103). It occurs as an accessory mineral in the Volta Grande pegmatite, Nazareno, ...
THE CRYSTAL STRUCTURE OF A MICROLITE-GROUP MINERAL WITH A FORMULA NEAR NaCaTa(2)O(6)F FROM THE MORRO REDONDO MINE, CORONEL MURTA, MINAS GERAIS, BRAZIL
(MINERALOGICAL ASSOC CANADA, 2011)
We present electron-microprobe and single-crystal X-ray-diffraction data for a microlite-group mineral with a formula near NaCaTa(2)O(6)F from the Morro Redondo mine, Coronel Murta, Minas Gerais, Brazil. On the basis of ...
Los minerales de Nb-Ta-U de la pegmatita María Elena, Sierra de San Luis, ArgentinaThe Nb-Ta-U minerals of the María Elena pegmatite, San Luis range, Argentina
(Asociación Geológica Argentina, 2021-09)
Se describe la asociación de minerales de Nb-Ta-U encontrados en la pegmatita María Elena, Sierra de San Luis, Argentina. La asociación de columbita-(Mn), kenopirocloro, plumbopirocloro con plumbomicrolita y kenomicrolite ...
Minerales accesorios y procesos de alteración del granito La Chinchilla, sierra de Velasco, La Rioja: Aspectos mineralógicos y geoquímicos en su relación con mineralización uraníferaAccessory minerals and alteration processes in La Chinchilla granite, Sierra de Velasco, La Rioja: Mineralogical and geochemical features in relationship with uranium mineralization
(Asociación Geológica Argentina, 2018-03)
La Chinchilla es un leucogranito miarolítico carbonífero de < 4 km2 , de tipo A aflorante en la sierra de Velasco, La Rioja, Argentina. Expone tres facies principales (equigranular, porfírica y microgranítica). La facies ...