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

THE KŐSZEG MOUNTAINS These small mountains situated in the extreme west of the country - and which constitute one of the eastern foothills of the Alps - have a slightly different mineral assemblage from those discussed so far. In phyllitic Jurassic metamorphic rocks are veins of quartz up to a meter wide around Kőszeg, Velem, and Cák. Apart from the quartz (and calcite), both of which may form crystals several mms in length, these veins contain albite, goethite, Mn-oxides, pyrite, and occasionally tiny rutile needles (Fig. 78). The manganese mineralisation was sufficiently rich in the Borha valley for it to be explored by digging and tunneling. Traces of chalcopyrite, malachite and azurite were also found at a number of localities. Fig. 78 RUTILE (2.5 mm xl) Fig. 79 MA GNETITE (1 cm xl) Cák Vaskeresztes