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Number of results: 6
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Abstract

The demand for REE was the background to include them to those consisting of the property of the State Treasury in Poland, enumerated in the Geological and Mining Law (Article 10). The PLN 500/kg REE payment for exploitation of REE (exploitation tax) was introduced. Both proposals will restrain the REE recovery from exploited domestic mineral commodities. The term REE is imprecise. Their deposits are rare and may be classified as “REE ore deposits”. The REE are often the accompanying constituents in varied mineral commodities and are recoverable during their processing, outside the mine. The application of an exploitation tax in such a case is inapplicable. The established value of the exploitation tax is incomparably high in respect to the value of the REE contained in mined mineral commodities. The analysis of introduced changes of mining and geological law allow to suggest the reevaluation of ownership based subdivision of mineral commodities: name the mineral commodities belonging to the land property owners and leave the list of mineral commodities consisting property of the State Treasury open. The more careful approach is also necessary in the formulation of Geological and Mining Law. It should be preliminary formulated by persons competent in geology and mining and subsequently adjusted to juridical exigencies.
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Abstract

Ore and non-ore mineralization in cracks filled with hydrocarbons in the dark grey Upper-Devonian limestone has been found in the Józefka quarry of Upper Devonian limestone and dolomite near the Górno village near Kielce at Holy Cross Mts. Poland. Hydrocarbons in the liquid form and iron and copper sulphides appears hear in the fault zone as joints filling. The wall rocks are impregnated by hydrocarbons giving them black color. Hydrocarbon impregnations appears also following the bedding planes The coexistence of ore mineralization and hydrocarbon suggests their common origin and migration from deep-seated sources, that may be the Silurian Ordovician or Lower to Middle Devonian black shales. The metallic-hydrocarbon compounds were suggested as metals carrier. Ore and non-ore mineralization in cracks filled with hydrocarbons in the dark grey Upper-Devonian limestone has been found in the Józefka quarry of Upper Devonian limestone and dolomite near the Górno village near Kielce at Holy Cross Mts. Poland. Hydrocarbons in the liquid form and iron and copper sulphides appears hear in the fault zone as joints filling. The wall rocks are spotty impregnated by hydrocarbons giving them black color. Hydrocarbon impregnations appears also following the bedding planes The coexistence of ore mineralization and hydrocarbon suggests their common origin and migration from deep-seated sources, that may be the Silurian Ordovician or Lower to Middle Devonian black shales. The metallic-hydrocarbon compounds were suggested as metals carrier.
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Abstract

Analiza stanu zasobów i ich wykorzystania w przeszłości pozwala na poznanie czynników kształtujących jego zmiany, ułatwić może ich prognozowanie i ocenę stopnia zabezpieczenia przyszłego zapotrzebowania krajowego na surowce. Znaczenie gospodarcze współcześnie w Polsce jako źródło ołowiu i cynku mają złoża: rud Zn-Pb w obszarze śląsko-krakowskim oraz rud miedzi na monoklinie przedsudeckiej, w których ołów występuje jako metal towarzyszący. Górnictwo rud cynku i ołowiu ma na ziemiach polskich wielowiekową tradycję. Do początków XXI w. w złożach śląsko-krakowskich wydobyto około 25–27 mln ton Zn i 7,5–9 mln ton Pb. Zasoby złóż są systematycznie ewidencjonowane od 1952 r. Do lat osiemdziesiątych XX wieku notowany był ich przyrost. O d 1983 roku zaznacza się stały ich ubytek spowodowany wyczerpywaniem zasobów eksploatowanych złóż. Znaczne zmniejszenie wykazywanych zasobów nastąpiło w latach 1991–1993 r. po zmianie kryteriów bilansowości, oraz w latach 2005–2007 po wprowadzeniu do szacowania zasobów metody „okręgów” zamiast wieloboków. Zasoby przemysłowe, kwalifikowane do wydobycia, zmniejszają się systematycznie w wyniku ich eksploatacji i można przewidywać całkowite ich wyczerpanie do 2022 r. W złożach niezagospodarowanych pozostało jeszcze 3 mln cynku i 1,2 mln ton ołowiu i przewiduje się 4–5 mln ton Zn i około 1 mln ton Pb w zasobów prognostycznych. W udokumentowanych złożach rud miedzi wykazywane jest 1,3–1,7 mln t Pb oraz mln to zasobów szacunkowych. Zasoby złóż niezagospodarowanych wymagają lepszego niż dotychczas rozpoznania, a w przypadku zasobów perspektywicznych ich potwierdzenia. Koniec eksploatacji złóż zagospodarowanych powinien być podstawą dla sprecyzowania polityki państwa odnośnie do przyszłości pokrycia zapotrzebowania krajowego na surowce cynku i ołowiu oraz przyszłości wykorzystania krajowej bazy surowcowej.
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Abstract

“Mineral deposit model”, “deposit modelling” are the terms commonly used, although imprecise. This is often identified as the application of computerized methods to the elaboration and presentation of geological information, in particular for the mining design. Deposit modelling is the mode of presentation of deposit features, which in the meaning of the authors of such presentation, describes the deposit features between the points of observations as best as possible. Deposit modelling has a long history (XVI-XVII centuries), however such a term was not used. Varied methods of cartographic presentation of deposits and their features were proposed. The progress in the presentation of the deposit in space using isolines maps has led to the separation of methods of deposits geometrisation. Over time, a simple mathematical statistics method was used to describe the deposit parameters, followed by geostatistical methods. Some of them were however not commonly used as too troublesome. The computer based approach to the presentation of geological data has an unquestionable value but is accompanied by the possibility of inappropriate formalized and erroneous interpretations and a presentation as to whether the basic rules of geological knowledge were neglected. Deposits modeling is a conceptual task and cannot be fully automated.
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