THE VARISCAN WEST-CARPATHIAN GRANITIC PEGMATITES: MINERALOGY, PETROGENESIS AND RELATIONSHIP TO PEGMATITE POPULATIONS IN THE EASTERN ALPS AND ROMANIAN CARPATHIANS

Year, pages: 1994, 313 - 318

West-Carpathian granitic pegmatites are spatially and genetically connected with Variscan Carboniferous granitic rocks. Two basic groups are distinguished: 1 — The Moravany type (PMOG) and Prasiva type (PAOG). PMOG are connected with Lower Carboniferous monazite-bearing S>I-type granodiorites-granites and contain accessory minerals of Be and Nb-Ta (Ti-poor). PAOG are connected with Middle-Upper Carboniferous I-type tonalites to granites, and contain a Be, Ti-Nb-Ta bearing assemblage. Pegmatites originated at temperatures and pressures about 650–700 to 350 °C and 400–300 MPa (PMOG) and 700–450 °C and 200 MPa (PAOG). A limited hydrothermal overprint is apparent. The Variscan West-Carpathian pegmatites show general similarity with pre-Alpine pegmatites in adjacent Eastern Alps and Romanian Carpathians. These pegmatites also contain Be, Nb-Ta mineralization but locally with Li-phases (mainly spodumene) and they are commonly remote from potential parental granites.

Uher, P. 1994. THE VARISCAN WEST-CARPATHIAN GRANITIC PEGMATITES: MINERALOGY, PETROGENESIS AND RELATIONSHIP TO PEGMATITE POPULATIONS IN THE EASTERN ALPS AND ROMANIAN CARPATHIANS. In Geologica Carpathica, vol. 45, no.5, pp. 313-318. 1335-0552.

Uher, P. (1994). THE VARISCAN WEST-CARPATHIAN GRANITIC PEGMATITES: MINERALOGY, PETROGENESIS AND RELATIONSHIP TO PEGMATITE POPULATIONS IN THE EASTERN ALPS AND ROMANIAN CARPATHIANS. Geologica Carpathica, 45(5), 313-318. 1335-0552.