2012 /20/2

ISSN: 1211-0329 (print), 1804-6495 (online)
Vedoucí redaktor: Mgr. Jiří Sejkora, PhD.

Hydroxylapatit z Medvědí jeskyně u Horního Maršova v Krkonoších (Česká republika)

Hydroxylapatite was found in the Medvědí cave near Horní Maršov in Krkonoše Mountains (Czech Republic). It was identified as part of the stalactite fragments, where it forms upper, grey-brown finely paralelly folded compact increment layer 1 - 2 mm thick. The unit cell parameters of hydroxylapatite,…

Asociace selenidů s makroskopickým umangitem z opuštěného uranového ložiska Zálesí v Rychlebských horách (Česká republika)

An unique selenide mineral association in calcite gangue was found at the abandoned uranium deposit Zálesí, Rychlebské hory Mountains, Czech Republic. Main selenide phase in the association is umangite, which forms abundant irregular grains up to 1 - 2 mm in size with purple color and metallic…

Asociácia biotit - granát - sillimanit v granitoch S-typu: P-T podmienky kryštalizácie granitov Malej Magury bratislavského masívu a Považského Inovca (Slovenská republika)

The S-type granitic rocks that contain informative mineral assemblages, e.g. biotite + garnet ± alumosilicate may be used for calculation of P-T conditions. In the Western Carpathians such assemblages occur in several cores of Strážovské vrchy (Malá Magura core), Považský Inovec and Malé Karpaty…

Saléeit z uranového rudního revíru Jáchymov (Česká republika)

A hydrated magnesium uranyl phosphate, mineral saléeite, was found in the dump material of the western part of the Rovnost uranium deposit, the Jáchymov ore district, Krušné hory Mountains, Czech Republic. Saléeite occurs as tiny (up to 0.5 mm) yellow tabular crystals formed small groups and radial…

Erionit-Ca z Michlova vrchu u Provodína, jv. od České Lípy (Česká republika)

An interesting zeolite mineralization with rare erionite-Ca was discovered at the Michlův hill (NE of Provodín, SE of Česká Lípa, Czech Republic), which is formed by Tertiary volcanites penetrating a formation of Upper Cretacerous sediments. The erionite-Ca forms snow-white aggregates consisting of…

Stopové prvky v křemeni z pegmatitu Věžná I (Česká Republika)

Internal texture and contents of trace elements Al, B, Ba, Be, Cr, Fe, Ge, Li, Mn, Nb, P, Pb, Rb, Sn, Sr and Ti in quartz from the granite, graphic and core zone of the Věžná I pegmatite (SW Moravia, Czech Republic) were studied using panchromatic cathodoluminescence (CL) and laser-ablation ICP-MS…

Kintoreit z ložiska uranových rud Zálesí v Rychlebských horách (Česká republika)

Kintoreite, a relatively rare phosphate of Fe and Pb, was found at the mine dump of abandoned Zálesí uranium deposit in the Rychlebské hory Mountains, Silesia (Czech Republic). It forms light green to yellow-green kidney-shaped and sphaeroidal aggregates up to 1 mm in size, which fill cavity in dark…

Výskyty unikátního monometalického stříbrného zrudnění na žíle H14F3 mezi 7. a 9. patrem šachty č. 21 Háje, příbramský uran-polymetalický revír (Česká republika)

During the preliminary exploration for the silver ore on the veins H14F and H14F3, between 6th and 9th level of the shaft No. 21 in the vein node Háje (Příbram uranium and base - metal ore district, Central Bohemia, Czech Republic), occurrences of monometallic Ag ores represented by native silver,…

Supergenní Cu mineralizace z Mědníku na Měděnci, Krušné hory (Česká republika)

An interesting (sub)recent supergene Cu-Zn mineral association was found at the abandoned gallery „Země zaslíbená“ at the Mědník hill, Měděnec, Krušné hory Mountains, Czech Republic. Minerals of the serpierite - devillite solid solution form light to pale blue spherical aggregates up to 2 mm in size…