Revision of the occurrence of vanadium-rich fissure phosphates at Medkovy Kopce near Hlinsko, Czech Republic

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00139258" target="_blank" >RIV/00216224:14310/24:00139258 - isvavai.cz</a>

Result on the web

<a href="http://scigeo.actamm.cz/en/revision-of-the-occurrence-of-vanadium-rich-fissure-phosphates-at-medkovy-kopce-near-hlinsko-czech-republic/" target="_blank" >http://scigeo.actamm.cz/en/revision-of-the-occurrence-of-vanadium-rich-fissure-phosphates-at-medkovy-kopce-near-hlinsko-czech-republic/</a>

DOI - Digital Object Identifier

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Result language

čeština

Original language name

Revision of the occurrence of vanadium-rich fissure phosphates at Medkovy Kopce near Hlinsko, Czech Republic

Original language description

During the research of secondary fissure phosphates of the Bohemian Massif, the historically mentioned localities in the vicinity of Hlinsko were newly investigated. This paper further characterizes the occurrences of fluorwavellite, variscite, cacoxenite and crandallite in fissures of Silurian graphite-rich metasedimentary rocks at the Medkovy Kopce northwest of Hlinsko (Pardubice Region, Czech Republic). Fluorwavellite forms orange-yellow, light yellow and blue-grey radially rayed aggregates 2–4 mm in size. Its empirical formula is (Al2.97V3+0.02K0.01)Σ3.00[(PO4)1.97(VO4)0.03]Σ2.00[F0.72(OH)2.27]Σ2.99·5H2O and refined unit-cell parameters are a 9.631(3), b 17.360(5), c 6.990(2) Å and V 1168.8(6) Å3. Three varieties of variscite have been observed: yellow-green translucent spherical aggregates up to 1 mm in size with empirical formula (Al1.00Fe0.01)Σ1.01[(PO4)0.99(VO4)0.01]1.00·2H2O; thin light green finely kidney-shaped crusts with empirical formula (Al0.95Fe0.03Mg0.01)Σ0.99(PO4)1.00·2H2O and chalky white solid spherical or powdery aggregates with empirical formula (Al1.05Fe0.02Mg0.01)Σ1.08(PO4)1.00·2H2O. Unit-cell parameters of all types of variscite are given in the text. Cacoxenite forms orange crusts up to 0.2 mm thick with empirical formula (Fe3+19.76Al3.81Mg0.33Ca0.07)Σ23.97O6.00[(PO4)16.76(VO4)0.24]Σ17.00(OH)8.53·75H2O and its structure was verified by Raman spectroscopy.

Czech name

Revision of the occurrence of vanadium-rich fissure phosphates at Medkovy Kopce near Hlinsko, Czech Republic

Czech description

During the research of secondary fissure phosphates of the Bohemian Massif, the historically mentioned localities in the vicinity of Hlinsko were newly investigated. This paper further characterizes the occurrences of fluorwavellite, variscite, cacoxenite and crandallite in fissures of Silurian graphite-rich metasedimentary rocks at the Medkovy Kopce northwest of Hlinsko (Pardubice Region, Czech Republic). Fluorwavellite forms orange-yellow, light yellow and blue-grey radially rayed aggregates 2–4 mm in size. Its empirical formula is (Al2.97V3+0.02K0.01)Σ3.00[(PO4)1.97(VO4)0.03]Σ2.00[F0.72(OH)2.27]Σ2.99·5H2O and refined unit-cell parameters are a 9.631(3), b 17.360(5), c 6.990(2) Å and V 1168.8(6) Å3. Three varieties of variscite have been observed: yellow-green translucent spherical aggregates up to 1 mm in size with empirical formula (Al1.00Fe0.01)Σ1.01[(PO4)0.99(VO4)0.01]1.00·2H2O; thin light green finely kidney-shaped crusts with empirical formula (Al0.95Fe0.03Mg0.01)Σ0.99(PO4)1.00·2H2O and chalky white solid spherical or powdery aggregates with empirical formula (Al1.05Fe0.02Mg0.01)Σ1.08(PO4)1.00·2H2O. Unit-cell parameters of all types of variscite are given in the text. Cacoxenite forms orange crusts up to 0.2 mm thick with empirical formula (Fe3+19.76Al3.81Mg0.33Ca0.07)Σ23.97O6.00[(PO4)16.76(VO4)0.24]Σ17.00(OH)8.53·75H2O and its structure was verified by Raman spectroscopy.

Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10504 - Mineralogy

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta Musei Moraviae, Scientiae Geologicae

ISSN

1211-8796

e-ISSN

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Volume of the periodical

109

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

19

Pages from-to

145-163

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85212160023