Publication details
Příspěvek k poznání provenience valounů ve slepencích svrchnoviséského stáří na Drahanské vrchovině: VI. Skarnoid
| Title in English | Contribution to the knowledge of provenance of pebbles from the Upper Viséean conglomerates in the Drahany Hights: VI. Skarnoid |
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| Authors | |
| Year of publication | 2009 |
| Type | Article in Periodical |
| Magazine / Source | Acta Musei Moraviae, Scientiae Geologicae |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | skarnoid; grunerite; magnetite; almandine; Luleč Conglomerate; provenance; Drahany Culm |
| Description | The pebble of leucocratic biotite migmatite with a small nodule of skarnoid rock (garnet+amphibole+magnetite+quartz) was found at locality Račice, Luleč conglomerates, Drahany Hights. Minerals from both rocks were studied in detail using electron microprobe and polarizing microscope. Thin transitional zone with Anenriched plagioclase (Ab5657 An43 Or01) is developed between skarnoid and migmatite. The mineral assemblages and chemical composition of minerals in skarnoid (almandine Alm7374Grs1416Prp6Sps23Adr23, grunerite XFe = 0.630.64, ferriferrohornblende XFe = 0.7475) and in host migmatite (plagioclase Ab6872 An2529 Or14), are similar with those from the localities of magnetiterich amphibolites from the Polička Unit or border facie of magnetite skarn in the Pernštejn area, Svratka Unit, respectively |
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