Minerogeneze páskovaných magnetitových rud na lokalitě Mnišské jámy v desenské skupině silesika
| Title in English | Minerogenesis of the banded magnetite ores from the Mnišské jámy locality in the Desná Group of the Silesicum |
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| Authors | |
| Year of publication | 2000 |
| Type | Article in Proceedings |
| Conference | Mineralogicko-petrologické sympózium Magurka 2000 |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | banded magnetite ore; Desná Group; Silesicum |
| Description | Banded quartz-magnetite ores placed conformably to the foliation of retrogradely metamorphosed gneisses of the Desná-group occur in the Mnišské jámy locality.Direct participation of volcanic basic material in forming of banded magnetite ores and protolite of neighbouring gneisses is probable. We can even think of bimodal volcanism if the layer of quarzitic gneiss corresponds to metamorphosed acid volcanic material. With regard to a possible portion of some clastic components in the ore, its origin in magmatogenic apatite and magnetite from sands can be considered too. |
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