THE CHROMIAN SPINELS OF THE GOGOŁÓW–JORDANÓW MASSIF, SOUTHWESTERN POLAND
Journal Title: Biuletyn Państwowego Instytutu Geologicznego - Year 2011, Vol 444, Issue 444
Abstract
The chromian spinel of the Gogołów–Jordanów Massif, southwestern Poland, is hosted by a serpentinized peridotite that builds a part of the Ślęża ophiolite complex. The chemical character of the chromian spinel indicates that the ophiolitic rocks were derived from depleted mantle peridotite of harzburgite and subordinate dunite compositions. The mantle rocks were initially formed at a mid-oceanic ridge and subsequently thrust at a supra-subduction zone. The chromian spinel frequently displays optical and geochemical zoning. Three zones can be identified from core to edge: inner core representing the original composition of the chromian spinel; narrow Cr-rich ferrichromit zone; and outer – magnetite zone. The chromian spinel zonation is interpreted to be a result of serpentinization rather than magmatic or metamorphic processes. Geochemical data obtained from the chromitite and chromian spinel have been shown in a table. Two trends were achieved considering the chromian spinel. The first trend shows redistribution of trivalent cations, where Cr2O3 and Al2O3 diminishes from the first zone up to the third zone and the second trend indicates Fe2O3 cations that increase from the first zone up to the third zone. Few Ni and Cu sulfide inclusions were found in the chromian spinel, too small to take EPMA data.
Authors and Affiliations
Piotr KRZEMIŃSKI
Keywords
Related Articles
- EP ID EP63965
- DOI -
- Views 59
- Downloads 0
PROSPECTS OF USING BROWN WATER FROM THE MIOCENE AQUIFER OF THE WIELKOPOLSKA REGION FOR PHYSIOTHERAPY
The Miocene aquifer formations of the Wielkopolska region are marked by the zonal occurrence of “brown water” with the colour intensity ranging from several hundred to several thousand mg Pt/l. Its origin is linked to th...
SHALLOW GROUNDWATER TEMPERATURE IN WROCŁAW CITY
The paper presents the results of measurements of shallow groundwater temperature in the territory of Wrocław City and the relation to the so-called „urban heat island”. Field measurements indicate a higher groundwater...
BARRIERS AND LIMITATIONS FOR UNDERGROUND COAL GASIFICATION
The possibilities of underground gasification of coal in the Polish deposits were previously overestimated. Geological conditions of coal occurrence may restrain or preclude possibility for safe UCG. According to the exp...
Ocena niepewności oznaczeń wskaźników chemicznych wód na podstawie granicy wykrywalności (LOD) i praktycznej granicy wykrywalności (PLOD)
W pracy przedstawiono przykład zastosowania granicy wykrywalności (LOD) i praktycznej granicy wykrywalności (PLOD) do oceny niepewności wyników badań jakości wód przeznaczonych do spożycia przez ludzi pod kątem zawartośc...
WPŁYW PRESORPCJI METANU NA ZMIANY WYMIARÓW ZEWNĘTRZNYCH WĘGLA KAMIENNEGO PODCZAS SORPCJI DITLENKU WĘGLA
W pracy przedstawiono badania mające na celu obserwację zachowania węgla kamiennego podczas gromadzenia w nim gazów kopalnianych i zmianę jego wymiarów zewnętrznych związaną z tym procesem. Podczas sorpcji gazów następuj...