NTF, Department of Geology, Lj. (NTFGEO)
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Geokemične in petrografske raziskave v premogovniku Kanižarica : diplomska nalogaKrašovec, AnaV premogovniku Kanižarica, domnevno srednjepliocenske starosti imajo težave s prepoznavanjem posameznih plasti. Premog, primeren za odkopavanje, se nahaja v štirih plasteh. S ciljem zanesljivo ... razlikovati in identificirati premogove plasti smo s petrografskimi in geokemičnimi raziskavami ugotavljali njihove značilnosti. Pri petrografski raziskavi nismo ugotovili bistvenih razlik v sestavi premoga posameznih plasti. V vseh štirih plasteh se prepletajo detricit in gelit. Prisotne so še sklerocije in glive, ki pričajo o sušnih pogojih nastajanja premoga. V manjših količinah so v premogu prisotna še smolna zrna in pirit. V sestavi jalovinskih vložkov prevladuje klacit, v sledovih so prisotni še illit, aragonit in klonit. V okviru geokemičnih raziskav smo v vzorcih premogovega pepela, z metodo emisijske spektroskopije analizirali vsebnost slednih prvin v premogovem pepelu: B, Ba, Be, Co, Cr, Cu,Ga, Mo, Ni, Pb, Sn, Sr, V, Zn in Zr, s fluorometrično metodo vsebnost urana ter dodatno z induktivno plazemsko spektormetrijo štiri izbrane vzorce na 39 elemntov. Ugotovili smo, da se vsebnost elementov: Pb, Yn, Cu, Ga, Ni, Zr, Be in Sn v pepelu premoga viša od spodnjih plasti proti zgornjim. Vsebnost U, Mo, V, Sr in B pa se zvišujejo v obratni smeri, to je od zgornjih proti spodnjim plastem. Ugotovljene vsebnosti Cr in Ba ne kažejo podobne zakonitosti. Pri tem moramo upoštevati, da imajo zgornje plasti več pepela kot spodnje. Dobljeni rezultati kažejo pravilnosti v spemembah vsebnosti nekaterih slednih prvin v stolpcu premogovnih plasti. Zakonitosti so potrjene s povprečnimi vrednostmi, s količniki in intervalnimi ocenami. Faktor obogatitve in osiromašenja premoga iz Kanižarice je ocenjen primerjalno s slovenskim in svetovnim povprečjem. Ugotovljena porazdelitev slednih prvin je uporabna za identifikacijo posameznih premogovnih plasti. Z določevanjem urana z radiometričnimi metodami bi pa še lažje prepoznavali posamezne plasti v premogovniku.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : Univerza, FNT, VTOZD Montanistika, 1987Language - slovenianCOBISS.SI-ID - 195166
Author
Krašovec, Ana
Other authors
Pirc, Simon |
Osterc, Valerija
Topics
diplomska naloga |
geokemija |
premogovne plasti |
Kanižarica |
sledne prvine |
petrografija
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NTF, Department of Geology, Lj. |
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Geologija M KRAŠOVEC Ana Geokemične IN: 000012739 Geologija M KRAŠOVEC Ana Geokemične IN: 000012739 |
available - outside loan, loan period: 14 days
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Pirc, Simon | 00734 |
Osterc, Valerija | 00835 |
Source: Personal bibliographies
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