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Przejawy mineralizacji w odniesieniu do procesów geotektonicznych w Karpatach fliszowych – nowe doniesienia

Jarmołowicz-Szulc Katarzyna, Kleczyński Piotr, Kozłowski Adam, Gąsienica Aleksander, Giro Leszek

Przegląd Geologiczny

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2023

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Vol. 71, nr 4

188--196

EN

Thirty rock and mineral samples were collected in the Rabe-Bystre area in the so-called Bystre slice in the Flysch Carpathians. The research concentrated on the mineral occurrence, parageneses and on the relationship to the tectonics. Red mineral realgar displays a pure content of arsenic sulphide. It occurs in veins and aggregates in the most frequent association with quartz. Fluid inclusions in the realgar crystals have been characterized and preliminarily measured, which is a totally new study in the Carpathian area. A new mineral – goyazite SrAl3(PO4)(PO3OH)(OH)6 – has been found as intergrowths in the realgar accumulations, and its characteristics are provided. It seems that the quartz-carbonates-bitumen paragenesis in the study region is related to the distinct tectonic mélange zones, while the ore mineralization should be referred to fault zones and fissures, and/or the mélange zones. It has an epigenetic character, and may be referred to the adjacent potential magmatic body and mineralized waters in the neighbourhood.

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Plumbogummite group minerals in Lower Devonian placoderm sandstones from Podłazie Hill, Holy Cross Mountains, Poland

Kruszewski Ł., Dec M.

Geological Quarterly

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2018

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Vol. 62, No. 2

353--360

EN

Samples of Lower Devonian vertebrate-bearing placoderm sandstones collected in a quarry at Podłazie Hill in the Holy Cross Mountains, central Poland, were found to contain numerous white and brownish aggregates of an unknown composition. Powder X-Ray Diffraction study has shown them to comprise plumbogummite group minerals (PGM). Gorceixite is most common, usually forming compact/porous aggregates. They are either found in voids within the quartz-rich zircon-, muscovite- and biotite-bearing matrix, or as a complete replacement after bone remnants. Goyazite aggregates are similar but rarer. Strontian crandallite is found as tiny zoned crystals closely associated with compact gorceixite (in the sandstone matrix) or as cores of fine-grained gorceixite aggregates (within the bones). All of the PGMs are enriched in Ce and La with two analyses marginally within the compositional field of florencite-(Ce). Ca enrichment, elevated F content and abundance of goyazite within the bone replacement suggest the primary bone apatite group as the source of these elements. Tuffites and claystones associated with the sandstones are probably the source of Ba and Sr, while Pb is possibly derived from local Devonian mineralisation.

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Phosphorus minerals in tonstein; coal seam 405 at Sośnica-Makoszowy coal mine, Upper Silesia, southern Poland

Kokowska-Pawłowska M., Nowak J.

Acta Geologica Polonica

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2013

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Vol. 63, no. 2

271--281

EN

The paper presents results of research on tonstein, which constitutes an interburden in coal seam 405 at the Sośnica - Makoszowy coal mine, Makoszowy field (mining level 600 m), Upper Silesia, southern Poland. The mineral and chemical compositions of the tonstein differ from the typical compositions described earlier for tonsteins from Upper Silesia Coal Basin area. Additionally, minerals present in the tonsteins include kaolinite, quartz, kaolinitised biotite and feldspars. The presence of the phosphatic minerals apatite and goyazite has been recognized. The presence of gorceixite and crandallite is also possible. The contents of CaO (5.66 wt%) and P2O5 (6.2 wt%) are remarkably high. Analysis of selected trace elements demonstrated high contents of Sr (4937 ppm) and Ba (4300 ppm), related to the phosphatic minerals. On the basis of mineral composition the tonstein has been identified as a crystalline tonstein, transitional to a multiplied one.