 | | Journal (article/letter/editorial) | | represents a secondary mineral after the alteration of roméite within a supergene zone, or crystallization from...derived by the leaching of the weathered primary roméite. Hence, the calcium and fluorine admixtures in...by EPMA, indicate intergrowths of brizziite and roméite on the micro- to crypto-scale. The presence of...far, as follows: the Cetine mine and the Pereta mine, both in Tuscany, Italy [1,2]. It cooccurs there with...the Pereta mine is also a secondary phase after the Sb primary minerals. The roméite-group minerals belong |  | Chukanov, Nikita V., Aksenov, Sergey M., Jančev, Simeon, Pekov, Igor V., Göttlicher, Jörg, Polekhovsky, Yury S., Rusakov, Vyacheslav S., Nelyubina, Yuliya V., Van, Konstantin V. (2016) A new mineral species ferricoronadite, Pb[Mn4+6(Fe3+,Mn3+)2]O16: mineralogical characterization, crystal chemistry and physical properties. Physics and Chemistry of Minerals, 43 (7) 503-514 doi:10.1007/s00269-016-0811-z | Journal (article/letter/editorial) | | minerals are franklinite, gahnite, hetaerolite, roméite, almeidaite, Mnanalogue of plumboferrite, zincohögbomite...diffraction data. The new mineral is tetragonal, space group I4/m, a = 9.9043(7), c = 2.8986(9) Å, V = 284.34(9)...is divided into the coronadite group (M4+= Mn4+) and the priderite group (M4+= Ti4+). Owing to their microporous...The new mineral was collected in the Babuna River valley, in talus at the bottom of the Kalugeri Hill. It...(relics of an earlier paragenesis), gahnite, quartz, roméite, almeidaite and zincohögbomite analogue with Fe3+ |
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Praborna Mine, Saint-Marcel, Aosta Valley, Italy