Publication details
Minerální asociace a chemické složení Mg-wolframitu a scheelitu z Cetoraze u Pacova, Česká republika
| Title in English | Mineral assemblage and chemical composition of Mg-wolframite and scheelite from Cetoraz by Pacov, Czech Republic |
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| Authors | |
| Year of publication | 2013 |
| Type | Article in Periodical |
| Magazine / Source | Acta Mus. Moraviae, Sci. geol. |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | wolframite;scheelite;huanzalaite component;(meta)greisen;chemical composition;Moldanubicum;Cetoraz by Pacov |
| Description | 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. |