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 (203 Česká republika, garant), Stanislav HOUZAR (203 Česká republika) a Karel SLAVÍČEK (203 Česká republika, domácí).
• Vydání: Acta Musei Moraviae, Scientiae geologicae, Moravian Museum, 2021, 1211-8796.

Další údaje

• Originální jazyk: čeština
• Typ výsledku: Článek v odborném periodiku
• Obor: 10505 Geology
• Stát vydavatele: Česká republika
• Utajení: není předmětem státního či obchodního tajemství
• WWW: Text článku
• Kód RIV: RIV/00216224:14310/21:00124007
• Organizační jednotka: Přírodovědecká fakulta
• Klíčová slova anglicky: pseudofulgurite; chemical composition; Czech Republic
• Štítky: rivok
• Příznaky: Recenzováno

Anotace

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.

Anotace 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.