GEOLOGICAL CHARACTERISTIC OF “STARITE KOLIBI†MARBLE DEPOSIT IN ASENOVGRAD DISTRICT

Abstract

The “Starite kolibi” deposit is located near to Muldava village and Asenovgrad town. The district is presented by the marbles of the Dobrostan Marble Branch. The region belongs to the Central Rhodope block and northwest edge of the East Rhodope Paleogene decline. They are massive marbles without sloping surfaces, with irregular cracks with different directions and slopes. They form a marble arc-shaped strip with a maximum length of 1050m and a maximum width of 330m. The thickness of the marbles is 39,4m. The top layer is made of a clay-sandy layer with small marble pieces and soil and average thickness of 0,4m. The origin of the marbles from the “Starite kolibi” deposit refers to the group of metamorphic deposits. The marbles in the whole career are visually all the same and massive with no cracks and stratifications. The main colors are gray-white and white. From the petrography point of view, they are fine crystalline and semi-crystalline marbles and the crystalline crystals are partially recrystallized. Calcite is the major rock-forming mineral (97-98%) of the marbles in the deposit.