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Podaż surowców skaleniowych w Polsce ze źródeł krajowych i zagranicznych w świetle potrzeb rynku

Lewicka E.

Przegląd Geologiczny

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2017

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Vol. 65, nr 6

392--399

EN

The paper presents characteristics of the domestic market of feldspathic raw materials, analysing the most important features that influenced the supply and demand in the past decades as well as changes which have taken place in recent years due to economic crisis in western countries at the turn of 2008 and 2009 and the ongoing military conflict in the East, initiated in 2014. In this context, the quality requirements related to feldspar raw materials utilized in the ceramic and glass-making industries being their main users are depicted. In Poland, from the mid-1990s to the end of the first decade of the 21th century the growth in demandfor these materials was observed, mostly due to the expansion of the domestic ceramic tiles industry. That resulted in the necessity of supplementing of the domestic production by increasing importation, coming not only from traditional suppliers, such as the Czech Republic and Scandinavian countries, but also - since 2002 -from Turkey. This article presents the most important current foreign suppliers of feldspathic raw materials to Poland, describing the sources of these raw materials as well as the quality characteristics of the most important ones.

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Potencjalne kierunki zagospodarowania kopalin skalenionośnych wraz z produktami słabozbywalnymi, powstającymi w procesie produkcyjnym kopalni gnejsu „Doboszowice 1”

Witt A., Schmidt Z., Pomorski A., Majcher A.

Górnictwo Odkrywkowe

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2015

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R. 56, nr 6

55--62

PL

Artykuł dotyczy innowacyjnych sposobów zagospodarowania kopalin skalenionośnych współwystępujących z innymi w złożach skał metamorficznych na przykładzie złoża gnejsu „Doboszowice 1”. W artykule scharakteryzowano alternatywne źródła oraz opisano możliwości pozyskiwania z nich surowców glinokrzemianowych zasobnych w alkalia na potrzeby przemysłu: ceramicznego i innych. Aktualnie krajowe surowce skaleniowo-kwarcowe pozyskuje się z trzech złóż leukogranitów, eksploatowanych koło Sobótki w ilości ok. 400 tys. Mg/rok, oraz w dużo mniejszej ilości ze złóż granitu: „Graniczna”, „Gniewków” i „Rogoźnica” położonych w masywie strzegomskim. W artykule wskazano możliwości technologiczne produkcji materiałów skaleniowo-kwarcowych dla ceramiki, z gnejsów laminowanych (słojowych) i oczkowych, w tym również frakcji niezbywalnych ( odpadowych), powstałych w ich procesach przeróbczych.

EN

The paper presents innovative methods of utilization of feldspar-bearing minerals occurring in metamorphic rock deposits on the example of „Doboszowice I” gneiss mine. The paper discusses alternative possibilities and methods of acquiring aluminosilicate reach in alkalies useful for ceramic industry. Currently, domestic materials of feldspar - quartz are acquired from three leucogranite deposits exploited near Sobótka (ca. 400 thousand Mg/year) and in Graniczna, Gniewków and Rogoźnica granite deposits located in the Strzegom massif. The article presents technological capabilities of production of feldspar- quartz materials for ceramic industry needs from augen and laminar gneiss, including waste fractions, formed during processing.

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Refining the granite, gneiss and schist interrelationships within the Lusatian-Izera Massif, West Sudetes, using SHRIMP U-Pb zircon analyses and new geologic data

Żelaźniewicz A., Fanning C., M., Achramowicz S.

Geologia Sudetica

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2009

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Vol. 41

67-84

EN

The eastern part of the Lusatian-Izera Massif, West Sudetes, comprises different types of gneissose rocks, collectively known as the Izera gneisses, with a subordinate component of petrographically varied mica schists. Coarse-grained gneisses and their protoliths have been dated at 515-480 Ma, but the lack of age data for other rocks has impeded accounts of their mutual relationships and, thus, the region's geological evolution. This paper reports new sensitive high-mass resolution ion microprobe (SHRIMP) U-Pb zircon data, and some new field and petrographic observations, for three representative rock types: 1) the Złotniki schist (a fine-grained quartz-albite-chlorite-sericite-biotite schist); 2) a fine-grained gneiss that grades to 'porphyroblastic' granite and which occurs on the slopes of Mt. Stóg Izerski; 3) a leucogranite found just the south of the village of Kotlina. A volcanogenic intercalation in the Złotniki Lubańskie schists developed at 560 Ma and contained xenocrystic zircons that grew in the source at 620 Ma and 600-580 Ma. The schists are interpreted as the metamorphosed equivalent of the Lusatian greywackes, which were derived from a dissected arc and deposited in a convergent-margin basin along northern peri-Gondwana. The zircons from the fine-grained gneisses yielded four age groups: 515 +- 7 Ma, 500 +- 12 Ma, 487 +- 13 Ma and 471 +- 8 Ma. Similar age groups of zircons can also be found in the coarse-grained metagranites. Rifting of Gondwana during the mid-Cambrian-early Ordovician was a protracted thermal event lasting ~30-45 m.y., with episodic attenuation of the mainland crust every ~5-10 m.y. before continental fragments finally became separated. Each episode successively promoted an increased heat flux from the mantle that facilitated melting of the crust, causing metamorphism and fusion of the Precambrian Lusatian-Izera basement and a final phase of S-type felsic magmatism. The leucogranite sample yielded zircons in two age groups, 508 +-5 Ma and 483.1 +- 3.6 Ma, with low Th/U ratios, which is interpreted as a product of an anatectic melting at deeper crustal levels. These leucogranites are in close spatial relation with belts of mica schist, which could mean that these granites used some rheologically weak zones that were introduced into the Izera pluton where large fragments of country rocks were trapped within the ~500 Ma granites.