| Company Name | : | AKFEN INSAAT TURIZM VE TIC.A.S |
| Location | : | ANKARA / ÇANKAYA |
| Web Site | : | www.akfen.com.tr |
| Tel | : | +90(312) 441 42 11 |
| Fax | : | +90(312) 441 07 82 |
MINERALS EMERY AND OTHER ABRASIVES Is a very hard rock type used to make abrasive powder. It largely consists of the mineral corundum (aluminium oxide), mixed with other species such as the iron-bearing spinels hercynite and magnetite and also rutile (titania). Industrial emery may contain a variety of other minerals and synthetic compounds such as magnesia, mullite, and silica.
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.