2018
Multi-Stage Evolution of Gold-Bearing Hydrothermal Quartz Veins at the Mokrsko Gold Deposit (Czech Republic) Based on Cathodoluminescence, Spectroscopic, and Trace Elements Analyses
WERTICH, Vojtěch, Jaromír LEICHMANN, Dosbaba MAREK a Götze JENSZákladní údaje
Originální název
Multi-Stage Evolution of Gold-Bearing Hydrothermal Quartz Veins at the Mokrsko Gold Deposit (Czech Republic) Based on Cathodoluminescence, Spectroscopic, and Trace Elements Analyses
Autoři
WERTICH, Vojtěch (203 Česká republika, garant, domácí), Jaromír LEICHMANN (203 Česká republika, domácí), Dosbaba MAREK (203 Česká republika) a Götze JENS (276 Německo)
Vydání
Minerals, Basel, Switzerland, MDPI, 2018, 2075-163X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10505 Geology
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.250
Kód RIV
RIV/00216224:14310/18:00103388
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000443257900025
Klíčová slova anglicky
hydrothermal quartz; gold deposit; cathodoluminescence (CL); trace elements; titanium; germanium; intrusion-related
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 2. 5. 2019 14:51, Mgr. Tereza Miškechová
Anotace
V originále
We performed a detailed analysis of hydrothermal quartz at the Mokrsko gold deposit (Cˇ elina, Mokrsko-East, and Mokrsko-West deposits). Twenty-one samples were studied by scanning electron microscopy cathodoluminescence (CL) imagining, CL emission spectra and trace elements were measured on six selected samples. Four quartz growth generations Q1 to Q4 were described. Homogeneous early blue CL Q1 with initial emission spectra at 380 and 500 nm was observed at the Cˇ elina deposit with typical titanium concentrations in the range of 20–50 ppm. Hydrothermal quartz at Mokrsko-West, which also includes early Q1, late subhedral faces of yellow CL Q2, and microfissures of greenish CL Q3 (both 570 nm), is characterized by titanium depletion. The titanium concentration is comparable to previous studies of crystallization temperatures proving titanium concentration in quartz as a good geothermal indicator. Q4, developed in microfissures only at Cˇ elina, has no visual CL effect. Mokrsko-West is specific in comparison to Mokrsko-East and Cˇ elina by germanium enrichments in hydrothermal quartz (up to 17 ppm) and the presence of fluorite. Tectonic (sheeted veinlets system, regional tectonic setting) and geochemical (germanium in quartz, the presence of fluorite) characteristics of the quartz veins link the late mineralization stages at the Mokrsko-West deposit to the temporally related Blatná intrusive suite.