Charakteristika pseudofulguritu ze Žatčan u Brna, Česká republika

VÍŠKOVÁ, Eva; Stanislav HOUZAR a Karel SLAVÍČEK. Charakteristika pseudofulguritu ze Žatčan u Brna, Česká republika. Acta Musei Moraviae, Scientiae geologicae. Moravian Museum, 2021, roč. 106, č. 2, s. 161-170. ISSN 1211-8796.

Základní údaje

Originální název

Charakteristika pseudofulguritu ze Žatčan u Brna, Česká republika

Název anglicky

Characterization of pseudofulgurite from Žatčany near Brno, Czech Republic

Autoři

VÍŠKOVÁ, Eva; Stanislav HOUZAR a Karel SLAVÍČEK

Vydání

Acta Musei Moraviae, Scientiae geologicae, Moravian Museum, 2021, 1211-8796

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Další údaje

Jazyk

čeština

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Text článku

Kód RIV

RIV/00216224:14310/21:00124007

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

2-s2.0-85124911153

Klíčová slova anglicky

pseudofulgurite; chemical composition; Czech Republic

Štítky

14315010, rivok

Příznaky

Recenzováno

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Anotace

V originále

Pseudofulgurite from Žatčany near Brno originated after a fall of high voltage cables (22 kV) at several intermittent places where they touched the ground (partly anthropogenic loam-sandy sediment with gravel admixture). Branched, tubular and irregular aggregates, up to 10 cm in size, were formed in similar way as some fulgurites. Pseudofulgurite is brown-black in color, with numerous bubbles of the order of mm in size, in the case of tubular shapes with a central rounded and square channel. It consists of several types of glasses, including rare lechatelierite. They contain sporadically submicroscopic metal balls composed of native Fe, alternatively with a proportion of P, Ni, Si, Co and Cr, demonstrating a strongly reduced environment. Rather rare crystalline phases have the composition of Ca-Fe-Al-Si (±Ti), also relics of quartz and sporadic biotite can be observed locally. A lower K 2 O / Na 2 O ratio of 2.53–0.13 and a relatively high proportion of highly volatile S may also indicate a relatively lower melting point.

Anglicky

Pseudofulgurite from Žatčany near Brno originated after a fall of high voltage cables (22 kV) at several intermittent places where they touched the ground (partly anthropogenic loam-sandy sediment with gravel admixture). Branched, tubular and irregular aggregates, up to 10 cm in size, were formed in similar way as some fulgurites. Pseudofulgurite is brown-black in color, with numerous bubbles of the order of mm in size, in the case of tubular shapes with a central rounded and square channel. It consists of several types of glasses, including rare lechatelierite. They contain sporadically submicroscopic metal balls composed of native Fe, alternatively with a proportion of P, Ni, Si, Co and Cr, demonstrating a strongly reduced environment. Rather rare crystalline phases have the composition of Ca-Fe-Al-Si (±Ti), also relics of quartz and sporadic biotite can be observed locally. A lower K 2 O / Na 2 O ratio of 2.53–0.13 and a relatively high proportion of highly volatile S may also indicate a relatively lower melting point.