Vernadite R080100

Name: Vernadite
RRUFF ID: R080100
Ideal Chemistry: (Mn,Fe,Ca,Na)(O,OH)2·nH2O
Locality: Serra Branca pegmatite, Pedra Lavrada, ParaĆ­ba, Brazil
Source: Michael Scott S1003673 [view label]
Owner: RRUFF
Description: Black rounded or globular micro grains, associated with serrabrancaite, R080077
Status: The identification of this mineral is not yet confirmed.
Sample Description: Unoriented sample

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RRUFF ID: R080100
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
REFERENCES for Vernadite

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Betekhtin A G (1944) Genetic types of maganese deposits, Izvestiya Akademii Nauk SSSR, 1944, issue 4 1-46

Fleischer M (1946) New mineral names, American Mineralogist, 31, 85-86   [view file]

Fleischer M, Burns R G, Cabri L J, Chao G Y, Hogarth D D, Pabst A (1979) New mineral names, American Mineralogist, 64, 1329-1334   [view file]

Giovanoli R (1980) Vernadite is random-stacked birnessite, Mineralium Deposita, 15, 251-253

Manceau A, Gorshkov A I, Drits V A (1992) Structural chemistry of Mn, Fe, Co, and Ni in manganese hydrous oxides: Part II. Information from EXAFS spectroscopy and electron and X-ray diffraction, American Mineralogist, 77, 1144-1157   [view file]

Lee S, Xu H, Xub W, Sun X (2019) The structure and crystal chemistry of vernadite in ferromanganese crusts, Acta Crystallographica, B75, 591-598