31. Non-metallic mineral prices dropped 0 . 2 percent. 32. The mining and metallurgic industry includes the extraction, foundry and refining of metal and non-metallic minerals . 33. The most important mines in Iran include coal, metallic minerals , sand and gravel, chemical minerals and salt. 34. Crookesite is an opaque, bluish grey to pink toned brown metallic mineral crystallizing in the tetragonal system. 35. Metallic minerals include gold, nickel and silver.36. The beverage sector and non-metallic mineral products sector also rose by 25.7 % and 4.4 % respectively. 37. Only makers of food and non-metallic mineral products such as glass, ceramnics and bricks said production fell. 38. He said he " was " rich because he owned a company that mined for non-metallic minerals . 39. Meanwhile, precious metal prices fell 6 . 4 percent, while metallic minerals prices declined 3 . 2 percent. 40. Non-metallic mineral prices dropped 0.2 percent.
