Szakáll Sándor - Jánosi Melinda: Minerals of Hungary (Topographia Mineralogica Hungariae 4. Miskolc, 1996)

In the 1960's the ore veins near Mátraszentimre were opened up when a shaft was sunk. Galena and sphalerite were the most common ore minerals in the quartz veins (as at Gyöngyösoroszi). Particularly beautiful crystals of stibnite accompanied the sphalerite and galena in samples from this mine (Fig. 35 and 36). Fig. 34 QUARTZ, amethyst (18 cm sp) Gyöngyösoroszi At many localities in the central region of the Mátra, ore seams with a similar mineral assemblage were opened by exploration shafts and trenches but none of them was mined for long. Worth mentioning, perhaps, are the adits near Parádsasvár where, in contrast to the quartz-bearing veins between Gyöngyösoroszi and Mátraszentimre, they are calcite-bearing. Here, in addition to 10-20 cm long calcite crystals, splendid crystals of sphalerite were found. Chief attraction of the Névtelen-bérc adit at Gyöngyössolymos was the