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Title Zeolitová mineralizácia v permských bazaltoch hronika (Kozie chrbty, východné Slovensko) Par.title Zeolite mineralization in the permian basalts of the hronicum unit (Kozie chrbty Mts., Eastern Slovakia) Author info Štefan Ferenc ... [et al.] Author Ferenc Štefan 1977- (64%) UMBFP01 - Katedra geografie a geológie
Co-authors Biroň Adrián (12%)
Luptáková Jarmila (12%)
Mikuš Tomáš (12%)
Source document Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze. Vol. 24, no. 2 (2016), s. 256-268. - Praha : Národní muzeum, 2016 Keywords Hronicum unit zeolites Language Slovak Country Czech Republic systematics 55 Annotation © 2016, National Museum Prague. All rights reserved. Laumontite and heulandite-Ca were found in the cracks and cavities of Permian basalt (Malužiná Formation, Ip oltica Group of the Hronicum Unit), in the eastern part of the Kozie Chrbty Mts., at Spišská Teplica Štefánikova and Lučivná Lopušná Dolina localities. Laumontite has a relatively monotonous chemical composition, only K content reaches up to 0.75 apfu. Average crystallochemical formula of laumontite (both occurrences) is (K 0.41 Na 0.06 Ca 3.61 ) Σ4.08 [Si 16.03 A l7.54 ] Σ23.56 O 48 ·18H 2 O, Si/Al ratio 2.13. Main diffraction maxima d(I) of laumontite are 9.461(100), 6.844(44), 4.157(48), 3.508(33), 3.272(22), unit cell parameters: a = 14.738(1) Å, b = 13.087(1) Å, c = 7.554(1) Å, β = 111.84°, V = 1352.3 Å3. Ca is dominant component in heulandite-Ca from the Štefánikova occurrence (2.18 2.69 apfu), from other admixtures, significantly increased is K content (1.30 2.35 apfu). Less important are Ba (0.05 0.7 apfu) and Sr (0.23 0.60 apfu), Na content reached up to 0.26 apfu. Average chemical composition of studied heulandite-Ca corresponds to formula (K 1.79 Na 0.16 Ca 2.39 Ba 0.38 Sr 0.39 Fe 0.13 ) Σ5.24 [Si 26 .82Al 8.94 ] Σ35.76 O 72 ·24H 2 O, Si/Al ratio 3.00. Its main diffraction maxima d(I) are 8.954(100), 4.650(17), 3.976(18), 3.897(18), 2.973(37), unit cell parameters: a = 17.786(1) Å, b = 17.930(1) Å, c = 7.4338(1) Å, β = 115.93°, V = 2131.9 Å3. Zeolites probably originated during the Alpine orogeny, at the reduced p-T conditions after a peak of the prehnite-pumpellyite facies of basalt metamorphosis. The minimum estimated conditions of their origin are T ~ 210 °C and p 2.1 2.4 kbar, corresponding to the burial depth of Hronicum basalts around 7 km, in the time of zeolites formation. Public work category ADM No. of Archival Copy 40396 Repercussion category ŠTEVKO, Martin - VARGA, Peter - SEJKORA, Jiří - ROVENSKÝ, Daniel. Heulandit-Ca a laumontit z kameňolomu Dubina pri Hranovnici. In Esemestník : spravodajca Slovenskej mineralogickej spoločnosti. ISSN 1338-6425, 2019, roč. 8, č. 2, s. 69-70.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
unrecognised
Title Uranofán zo Seliec pri Banskej Bystrici (Starohorské vrchy, Slovenská republika) Par.title Uranophane from Selce at Banská Bystrica (Starohorské vrchy, Slovenská republika) Author info Ľuboš Polák ... [et al.] Author Polák Ľuboš 1989- (45%) UMBFP01 - Katedra geografie a geológie
Co-authors Ferenc Štefan 1977- (35%) UMBFP01 - Katedra geografie a geológie
Biroň Adrián (15%)
Sýkorová Martina 1986- (5%) UMBFP08 - Katedra chémie
Source document Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze. Vol. 24, no. 2 (2016), s. 178-182. - Praha : Národní muzeum, 2016 Keywords oxidačná zóna uranylové minerály uranofán uránová mineralizácia - uranium mineralization veporikum Headings Geogr. Starohorské vrchy Selce (Slovensko) Slovensko Language English Country Czech Republic systematics 551 Annotation Príspevok pojednáva o mineralogickej charakteristike uranofánu - uranylového silikátu zo Seliec pri Banskej Bystrici. Práca obsahuje jeho RTG difrakčný záznam a infračervené spektrum spolu s mineralogickým opisom minerálu. © 2016, National Museum Prague. All rights reserved. Uranophane was identified in Permian arkoses containing uranium mineralization at the Selce village (Banská Bystrica district), Starohorské vrchy Mts. It forms globular aggregates (up to 0.15 mm in size), consist of fibrous, needle like crystals resp. cryptocrystalline coatings and crusts on rocks fissures, also it fills rock cavities. Uranophane has a light to dark yellow colour, with yellow green luminiscence in UV light. It is associated with boltwoodite (?), malachite and hydrated Mn oxides. Uranophane was identified by powder X-ray diffraction data and it has refined unit cell parameters: a 15.908(1), b 7.030(1), c 6.669(1) Å, β 97.54(2)° and V 739.5(1) Å3. The results of infrared spectroscopic study of uranop URL Link na plný text Public work category ADM No. of Archival Copy 40643 Repercussion category RUSS, Albert - KAŇA, Richard - JELEŇ, Stanislav - HRDLOVIČ, Ľuboš. Kvety baní, minerály stredoslovenskej banskej oblasti. Banská Štiavnica : Banskoštiavnicko-hodrušský banícky spolok Banská Štiavnica, 2020. 287 s. ISBN -978-80-973265-2-4.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised