| Company Name | : | GÜVEN İŞ KUYUMCULUK KALIPÇILIK İNŞAAT SANAYİ VE TİCARET LTD.ŞTİ. |
| Location | : | İSTANBUL / SULTANAHMET FATİH |
| Web Site | : | www.guvenis.com |
| Tel | : | +90(212) 638 79 06 |
| Fax | : | +90(212) 518 41 96 |
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.