|Company Name||:||YAPI MERKEZİ İNŞ.VE SAN.A.Ş.|
|Location||:||İSTANBUL / ÜSKÜDAR|
|Tel||:||+90(216) 321 90 00|
|Fax||:||+90(216) 321 90 13|
MINERALS OTHER MINERAL SUBSTANCES VERMICULITE, SEPIOLITE, ARSENIC SULFUR, ZIRCONIUM SILICATE
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.
MINERALS QUARTZ Quartz is a chemical compound consisting of one part silicon and two parts oxygen. It is silicon dioxide (SiO2). It is the most abundant mineral found at Earth's surface and its unique properties make it one of the most useful natural substances. Quartz is one of the most useful natural materials. Its usefulness can be linked to its physical and chemical properties. It has a hardness of seven on the Mohs Scale which makes it very durable. It is chemically inert in contact with most substances. It has electrical properties and heat resistance that make it valuable in electronic products. Its luster, color and diaphaneity make it useful as a gemstone and also in the making of glass.