Record details

    Zn-rich ilmenite and pseudorutile: subsolidus products in peraluminous granites of the Melechov Massif, Moldanubian Batholith, Czech Republic
    Matějka, Dobroslav
    Procházka, Václav
    Uher, Pavel
Publication type
    článek v periodiku
Source title - serial
    Neues Jahrbuch für Mineralogie, Abhandlungen
    Roč. 187, č. 3
Thesaurus term
    Czech Republic
    Melechov Massif
    Moldanubian Batholith
    S-type granite
    subsolidus granite processes
    Zn-rich ilmenite
Abstract (in english)
   In Hercynian peraluminous S-type granites of the Melechov Massif (Moldanubian Batholith, Czech Republic), Zn-rich ilmenite with up to 20 wt. % ZnO formed mainly as a product of subsolidus alteration of biotite into muscovite. Ilmenite usually fills the cleavage of muscovitized biotite. It is often accompanied by a TiO2 phase, Zn-rich pseudorutile and compositions transitional between ilmenite and pseudorutile (Fe23+Ti3O9). At the ~1 mým scale biotite alteration produced very fine intergrowths with muscovite (+-chlorite). Subsolidus alteration of primary magmatic ilmenite with less than 0.5 wt. % ZnO led to Zn-rich oxide/oxy-hydroxide phases (<= 5.3 wt. % ZnO), characterized by increasing Fe oxidation and decreasing Fe content (down to 15 wt. % Fe2O3).
    UK Praha, Přírodovědecká fakulta
Contributor code
    UK, PřF
Source format
Import date
    8. 8. 2012