engleski

Old Mining Sites and Dumps Recognition by Fluid Inclusison Characteristics, Rude, NW Croatia

Rude ore deposit is situated within Dinaric geotectonic units, 25 km NW from Zagreb. It is a complex ore deposit consisting of a subterrestrial, epigenetic, ore-vein system (siderite, Cu, Pb, Zn sulfides, barite and quartz), a feeder of the hanging stratiform, SEDEX part (siderite, hematite, barite, quartz, gypsum and anhydrite). The host rocks are Upper Paleozoic clastics overlain by Scythian sandstones and shales (ŠINKOVEC, 1971). The ore zone is beneath a thick cover of Mesozoic sediments, including Cretaceous melange with masses of spilites and pillow lavas in alochtonous position. Interpillow spaces are filled out with secondary quartz. The mining was abundant in sixties and research of the ore deposits is possible only by minerals from old dumps and streams draining the mining area. FI study revealed a presence of the two different groups of quartz minerals, one belonging to the mineralization itself and another to the Mesozoic pillow lava formation. The fluid inclusion data from pillow lavas bear following characteristics.

fluid inclusions; pillow lava quartz; old mining

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