The Celaller tin mineralisation is observed with in the hematite and tourmaline bearing quartz veins which occur along the greisenised marginal zones of a granite. The tin mineral is cassiterite. The hematite bearing quartz veins are richer in cassiterite than other vein types, the tourmalin bearing quartz veins contain rare and small cassiterite crystals. The first in situ cassiterite mineralisation found in Anatolia occurs in the Celaller region.