实习四 非金属矿物.pptVIP

实习四 常见矿物（二）非金属矿物 目的：1、熟悉非金属矿物的特征及物理性质 2、认识几种主要非金属矿物 内容：1、描述：蛇纹石、滑石、红柱石、 萤石、 石膏、磷灰石、石墨、雄黄、 绿泥石等 2、观察：自然硫、雌黄、绿帘石、绿柱石、 重晶石等 Minerals are classified in many ways. One of the most popular way is based on their luster. Minerals with metallic luster are classified as metallic minerals and minerals with non-metallic luster are classified as non-metallic minerals. Non-metallic minerals do not have the flash of a metal, though they may have the brilliance of a diamond or the silky appearance of gypsum. Generally much lighter in color than metallic minerals, non-metallic minerals can transmit light, at least through pieces or edges. Beauty, durability and rarity of the non-metallic minerals qualify them as gemstones. The industry of non-metallic mineral products is made up of the cement, ceramics, glass and lime sectors. These are all traditional, well-established manufacturing sectors characterised by the transformation of naturally occurring minerals such as limestone, silica, and clays, through an energy?intensive process. Their products are used in a wide range of applications, from entirely in the construction industry in the case of cement, bricks roof tiles, wall floor tiles, sanitaryware and some glass products, through to consumer products like tableware and decorative goods. The operators in the industry range from global players as in the cement, flat, container and fibre glass, bricks, and to a certain extent in the lime sector, to SMEs as in most sectors of the ceramics industry and parts of the lime industry. Feldspar--ceramics and geopolymers Calcite--toothpaste, construction Quartz– glasses, semi-precious gemstones Beryl-- gemstones, fluorescent lights Apatite --manufacture of fertilizer, phosphoric acid, gemstone Serpentine -- ovenstone, decorative stones Graphite-- common pencils, zinc-carbon batteries, electric motor brushes Gypsum -- plaster ingredien