LOSERTOVÁ, Lenka, Zbyněk BUŘIVAL, Zdeněk LOSOS and Stanislav HOUZAR. Minerální asociace a chemické složení Mg-wolframitu a scheelitu z Cetoraze u Pacova, Česká republika (Mineral assemblage and chemical composition of Mg-wolframite and scheelite from Cetoraz by Pacov, Czech Republic). Acta Mus. Moraviae, Sci. geol. Brno: Moravské zemské muzeum, 2013, roč. 98, No 1, p. 41-48. ISSN 1211-8796.
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Basic information
Original name Minerální asociace a chemické složení Mg-wolframitu a scheelitu z Cetoraze u Pacova, Česká republika
Name (in English) Mineral assemblage and chemical composition of Mg-wolframite and scheelite from Cetoraz by Pacov, Czech Republic
Authors LOSERTOVÁ, Lenka (203 Czech Republic, belonging to the institution), Zbyněk BUŘIVAL (203 Czech Republic, belonging to the institution), Zdeněk LOSOS (203 Czech Republic, guarantor, belonging to the institution) and Stanislav HOUZAR (203 Czech Republic).
Edition Acta Mus. Moraviae, Sci. geol. Brno, Moravské zemské muzeum, 2013, 1211-8796.
Other information
Original language Czech
Type of outcome Article in a journal
Field of Study 10500 1.5. Earth and related environmental sciences
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14310/13:00070538
Organization unit Faculty of Science
Keywords in English wolframite;scheelite;huanzalaite component;(meta)greisen;chemical composition;Moldanubicum;Cetoraz by Pacov
Tags AKR, rivok
Changed by Changed by: doc. RNDr. Zdeněk Losos, CSc., učo 2470. Changed: 17/3/2014 14:38.
Abstract
Hořčíkem relativně bohatý wolframit byl studován z lokality metagreisenu z Cetoraze u Pacova. Chemické složení odpovídá ferberitu se vzorcem (Fe0,752Mn0,227Mg0,040Ca0,001K0,001)1,021(W0,987Nb0,004V0,004)0,995O4. Wolframit je zatlačován scheelitem. Oba minerály jsou výrazně alterovány za vzniku fáze odpovídající ferritungstitu, který byl původně pokládán za wolframit II.
Abstract (in English)
Magnesium-bearing wolframite was analysed from the occurence near Cetoraz by Pacov. It forms grayish to black crystals up to 10 cm and irregular grains of various size. Wolframite composition is dominated in ferberite with average chemical composition(Fe0,752Mn0,227Mg0,040Ca0,001K0,001) 1,021(W0,987Nb0,004V0,004)0,995O4. Unusual is relatively high huanzalaite component (up to 4 %) and increased content of Nb. Wolframite is replaced by scheelite with nearly ideal chemical composition CaWO4. Scheelite forms light yellow and light gray grains up to 1 cm and occurs in quartz or with wolframite. Both wolframite and mainly scheelite are strongly altered and sometimes fully replaced by mineral close to “ferritungstite”, which was previously misidentified as younger wolframite II.
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