Počet záznamů: 1

Agricolaite, a new mineral of uranium from Jáchymov, Czech Republic

  1. 1.
    0368288 - GLU-S 2012 RIV AT eng J - Článek v odborném periodiku
    Skála, Roman - Ondruš, P. - Veselovský, F. - Císařová, I. - Hloušek, J.
    Agricolaite, a new mineral of uranium from Jáchymov, Czech Republic.
    Mineralogy and Petrology. Roč. 103, 1/4 (2011), s. 169-175 ISSN 0930-0708
    Výzkumný záměr: CEZ:AV0Z30130516
    Klíčová slova: agricolaite * uranyl carbonate * uranium * new mineral * Jáchymov
    Kód oboru RIV: DB - Geologie a mineralogie
    Impakt faktor: 1.278, rok: 2011

    The new mineral agricolaite, a potassium uranyl carbonate, occurs in vugs of ankerite gangue in gneisses in the abandoned Giftkiesstollen adit at Jáchymov, Czech Republic. It occurs as isolated equant irregular translucent grains to 0.3 mm with yellow color, pale yellow streak, and vitreous luster, is brittle with uneven fracture and displays neither cleavage nor parting. Agricolaite is non-fluorescent. Mohs hardness is ~4. It is associated with aragonite, brochantite, posnjakite, malachite, rutherfordine, and “pseudo-voglite”. The mineral is monoclinic, space group C2/c, with a 10.2380(2), b 9.1930(2), c 12.2110(3) Å, β 95.108(2)°, V 1144.71(4) Å3, Z = 4. The structure of agricolaite is identical to that of synthetic K4(UO2)(CO3)3.
    Trvalý link: http://hdl.handle.net/11104/0202676