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The gabbro quarry at Szarvaskő Tardos is located in the western part of Bükk Mountain, part of the North Central Mountains, in the valley of the Eger stream, 2.5 km from Szarvaskő village. The rock material of the quarry was known earlier as Western Bükk diabase, however, according to the current nomenclature the gabbro is referred as Tardos Gabbro Formation and Szarvaskő Basalt Formation. The basic magmatic rock formations are results of the undersea magmatic activity during the Jurassic period, Callovian stage. The total length of the pit wall in the gabbro quarry at Szarvaskő Tardos is 679 m in two mining operations levels. Volume of gabbro blocks is generally between 0.5-1.0 m3, sometimes 2-3 m3, and occasionally 8-10 m3. The gabbro is dark grey in colour with greenish shade, dense, grained, hard and brittle fracturing. The paper describes the exploratory mining geology research of the quarry, the mineral composition of the gabbro together with its physical properties and utilization possibilities. The high quality gabbro of the quarry was utilized as crushed stone products for road construction and as construction blocks. The paper calls the attention to the need of more detailed, complex exploratory mining geology research for future utilization. [ABSTRACT FROM AUTHOR]

The Gánt felsőlegelő dolomite quarry is located in the South-East edge of the Vértes, on the North- East side of the No. 8123 highway, at about 3 km distance from Gánt village. The total length of the pit wall in the Gánt felsőlegelő dolomite quarry is 4590 m. As a result of the mining activity, the dolomite has been explored in vertical direction at 46 meters. The diploporic dolomite is generally light or pale grey in colour, dense, hard and locally fragmented due to tectonic activity. At certain locations, light red and brown discoloration is observed by limonite formation that is the result of the precipitation from iron contaminated solutions filtrating through crevices. Mining geology observations confirmed the thickness of dolomite benches in the range of several cm to several m. Blocks are also observed in the extracted dolomite bulk. Volume of blocks is generally between 0.5-1.0 m3, sometimes 2-5 m3. The largest block ever observed had the volume of 18 m3. Shape of blocks is irregular, fragmented, eventually crumbled. The high quality dolomite products of the quarry can be utilized as crushed stone products for road construction (road base), as aggregate for concrete and - due to its frost resistance - as construction blocks. The dolomite/clay products can be used for embankments or in recultivation. The rich dolomite resources at the Gánt felsőlegelő dolomite quarry can provide high quality products for the region for a long time. [ABSTRACT FROM AUTHOR]