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PGE in ultramafic rocks of the hidden ophiolite complex near Svitavy, Bohemian Massif
- 1.0089886 - GLÚ 2008 RIV IE eng C - Conference Paper (international conference)
Pašava, J. - Vymazalová, A. - Knésl, I. - Ackerman, Lukáš
PGE in ultramafic rocks of the hidden ophiolite complex near Svitavy, Bohemian Massif.
[Platinové kovy v ultramafických horninách skrytého ofiolitového komplexu u Svitav, Český masiv.]
9th Biennial Meeting of the Society for Geology Applied to Mineral Deposits. Dublin: Irish Association for Economic Geology, 2007 - (Andrew, C.), s. 1591-1594
[Biennial Meeting of the Society for Geology Applied to Mineral Deposits /9./. Dublin (IE), 20.08.2007-23.08.2007]
R&D Projects: GA AV ČR KJB300130612
Institutional research plan: CEZ:AV0Z30130516
Keywords : PGE * ultramafic rocks * Svitavy (Czech Republic)
Subject RIV: DD - Geochemistry
Anomalous concentrations of platinum-group elements (PGE) Pd – up to 281 ppb, Pt – up to 110 ppb, Ir – up to 7.4 ppb, Ru – up to 19.8 ppb, Rh –up to 8.4 ppb and Au (up to 18.5 ppb) have been detected in low Ni-Cu (Cr) mineralized pyroxenite and serpentinite recovered from the HSV-1 structural borehole at Svitavy. Based on geological and geotectonic position and geochemi-cal data these rocks hidden under Cretaceous sediments represent most likely continuation of the Letovice ophiolite complex. Maximum Ni, Cu and Cr values reach 0.67, 0.11 and 0.35 wt.%, re-spectively and abundant spinels (Cr-spinel, magnesiochromite, chromite) and magnetite with minor sulfides (millerite and chalcopyrite) were identified as major ore bearing minerals in the most rich-est PGE sample. No discrete PGE phases were identified.
Anomální koncentrace platinových kovů byly zjištěny v nízce mineralizovaném (Ni-Cu) pyroxenitu a serpentinitu získaných ze strukturního vrtu HSV-1. Na základě geologické a tektonické pozice se zdá, že tyto horniny představují pokračování Letovického ofiolitového komplexu.
Permanent Link: http://hdl.handle.net/11104/0004263
Number of the records: 1