|Company Name||:||ROK ENERJİ VE MÜHENDİSLİK A.Ş.|
|Location||:||İSTANBUL / KARTAL|
|Tel||:||+90(216) 511 59 58|
MINERALS SETTS, CUBSTONES AND FLAGSTONES, OF NATURAL STONES Natural building stones are rocks of various origins which are processed and sized to be used in construction. Marble, traver tine,granite, andesite, basalt and diabase are among impor tant building stones.
MINERALS GYPSUM, ANHYDRITE, PLASTERS Gypsum is a mineral containing calsium sul fate in its chemical composition. In addition to natural Gypsum, synthetic gypsum is pro duced as well. Important gypsum sources include ankm orum, Yozgat, Erzincan, Ankara-Bala, Sivas, Kars-Kağızman, Tuzluca, Denizli-Sarayköy and Niğde-Karakol.