New Data on Minerals. М., 2008. Volume 42 11
GUIMARÃESITE, A NEW Zn DOMINANT MONOCLINIC ROSCHERITE GROUP MINERAL FROM ITINGA, MINAS GERAIS, BRAZIL* Nikita V. Chukanov Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia; [email protected] Daniel Atencio Instituto de Geociê ncias, Universidade de Sã o Paulo, Sã o Paulo,Brazil; [email protected] Aleksander E. Zadov NPO "Regenerator", Moscow, Russia Luiz A.D. Menezes Filho Rua Esmeralda, 534, Prado, 30410 080, Belo Horizonte, MG, Brazil José M.V. Coutinho Instituto de Geociê ncias, Universidade de Sã o Paulo, Sã o Paulo,Brazil; [email protected]
1 Guimarã esite , Ca2(Zn,Mg,Fe)5Be4(PO4)6(OH)4·6H2O,monoclinic, is a new member of the roscherite group. It occurs as a late fracture