Laser ablation ICPMS study of trace element chemistry in molybdenite coupled with scanning electron microscopy (SEM) — An important tool for identification of different types of mineralization

Molybdenite-tungstenite association in the tungsten-bearing topaz greisen at Vítkov (Krkonoše-Jizera Crystalline Complex, Bohemian Massif): indication of changes in physico-chemical conditions in mineralizing system

“…The following isotopes were measured at the two mass-resolution modes in order to avoid isobaric and polyatomic interferences: (1) the low mass-resolution mode (m/Δm = 300) was used for 57 Pašava et al (2016).…”

“…3). Pašava et al (2016) studied in situ variation in chemical composition of molybdenite from different types of mineral associations in the Bohemian Massif. The highest average contents of Cu (58 ppm), Zn (45 ppm), As (40 ppm) and Co (3 ppm) were detected in greisenrelated molybdenite while the highest average values of Bi (1150 ppm), Ag (434 ppm), Te (111 ppm), Sb (38 ppm) and Au (24 ppm) were found in molybdenite from gold deposits.…”

“…Cook et al 2009Cook et al , 2013Large et al 2009Large et al , 2014Sung et al 2009;Lin et al 2011;Thomas et al 2011;Pašava et al 2013Pašava et al , 2015Pašava et al , 2016 that Electron Microprobe Analysis (EMPA) and Laser Ablation Inductively Coupled Mass Spectroscopy (LA-ICP-MS) spot analyses and mapping are very useful for documentation and interpretation of trends of trace-element distribution in sulfides such as pyrite, arsenopyrite and sphalerite. Blevin and Jackson (1998) used LA-ICP-MS to measure a number of elements in molybdenite containing both Bi-mineral inclusions and Au.…”

Rhenium Enrichment in the Muratdere Cu-Mo (Au-Re) Porphyry Deposit, Turkey: Evidence from Stable Isotope Analyses (δ34S, δ18O, δD) and Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry Analysis of Sulfides

“…Other trace elements in molybdenite: Selenium has been suggested to be incorporated into molybdenite via isometric substitution, as MoSe2 is isostructural with MoS2 and so Se 2may substitute for S 2in the lattice (Drábek, 1995;Pasava et al, 2016). The two generations of molybdenite in Muratdere both contain Se, with very consistent concentrations and flat TRA profiles (App.…”

“…The other trace elements observed in molybdenite in Muratdere are less consistent, with very variable concentrations between and within molybdenite crystals. Although, theoretically, Te 2could substitute for S 2in molybdenite (Drábek, 1995;Pasava et al, 2016), the Te concentrations in Muratdere molybdenite crystals are very variable, and TRA profiles show irregular patterns that have been suggested to show the presence of micro-or nanoinclusions (Ciobanu et al, 2013;Pasava et al, 2016). Te and Bi correlate in the bladed molybdenite, which may imply the presence of bismuth-tellurium mineral microinclusions, as observed at Kalmakyr (Pasava et al, 2016).…”