An unique As-Bi association from Jachymov
- Details
- Created on Wednesday, 07 December 2016 20:14
- Last Updated on Wednesday, 07 December 2016 20:28
- Hits: 1902
An unique As-Bi mineralization of the Geister vein in Jáchymov.
The Jáchymov ore area is typical by its occurrences of various secondaries of arsenic, uranium and other elements. Very popular are recently growth secondaries from dumps or directly from the old workings, originated during last tenths or hunderts years. In Jáchymov above the Rovnost I shaft occurred very rich association of supergenne minerals of As, P, Cu and U, which belongs among the most interesting in Czech Republic of its kind. The age of this mineral association is about several dozens of thousands or lower hundreds of thousands years.
Línekite - new rare uranyl carbonate from Jáchymov
- Details
- Created on Friday, 03 January 2014 19:56
- Last Updated on Wednesday, 23 December 2015 20:58
- Hits: 2347
Línekite - new rare uranyl carbonate from Jáchymov
Another new mineral from Háchymov, which was described in 2012 is línekite. Its chemistry is K2Ca3[(UO2)(CO3)3]2 . 7H2O.
Mathesiusite - new extremly rare mineral from Jáchymov
- Details
- Created on Tuesday, 05 November 2013 17:09
- Last Updated on Tuesday, 05 November 2013 17:09
- Hits: 3613
Mathesiusit - new extremly rare mineral from Jáchymov
One of the freshly described uranium minerals from Jáchymov is also extremly rare mathesiusite. Its chemical composition can be expressed like K5(UO2)4(SO4)4(VO5).4H2O and mathesiusite has a new specific structure type.
Selenium secondaries from Zálesí
- Details
- Created on Monday, 19 August 2013 19:15
- Last Updated on Monday, 19 August 2013 19:15
- Hits: 5669
Selenium secondaries from Zálesí
Zálesí is worldwide good known locality of uranium mineralisation in Rychlebské Mts (NE part of the Czech Republic). It belongs between Czech most important uranium minerals localities, but Czech best erythrites and high quality arsenides were also found here. After the mining period was gradually found attractive association of the secondary selenium minerals.
Vysokýite - new arsenate from Jáchymov
- Details
- Created on Monday, 01 April 2013 16:05
- Last Updated on Friday, 10 May 2013 15:23
- Hits: 2605
Vysokýite is another very rare exotic Jáchymov mineral caming up from the 10th level of the Svornost shaft. It was found about 30 years ago on the so called "Arsenic lens" in the south part of the Geschieber vein between the Svornost and Josef shaft. We know today specimens of kaatialaite and claudetite from there. Vysokýite was described by Plášil et al. in the year 2013.