Marble that exploited for micronized calcite production in Nigde area (South Central Turkey) occur in the Upper Cretaceous Gümü ler, A gedi i, and Kaleboynu Formations of the Nigde Massif. Although there are...Marble that exploited for micronized calcite production in Nigde area (South Central Turkey) occur in the Upper Cretaceous Gümü ler, A gedi i, and Kaleboynu Formations of the Nigde Massif. Although there are a few marble producing quarries in the area, it is long been known that the marbles of this area are generally highly fractured and don’t yield large blocks or suitable slabs meeting the industrial demands. Thus, most of the production is currently carried out mainly as building stone, crushed stone and micronized calcite. Due mainly to high demand, micronized calcite has been becoming very significant export product to the state’s economy. Because the Nigde marbles are coarse grained with high CaCO3 content, high purity and whiteness, they are considered to be the highest quality micronized calcite quarries in the country. Consequently, the area drew many national and international investors resulting in significant increase in the number and extent of micronized calcite plants in the area. In early 1980’s, the city of Nigde had only one or two plants, it is now well over 5 including foreign investors and joint ventures. Annual production is also considerably increased from 20,000-30,000 tones to almost half a million tones and it is still in increasing trend.展开更多
文摘Marble that exploited for micronized calcite production in Nigde area (South Central Turkey) occur in the Upper Cretaceous Gümü ler, A gedi i, and Kaleboynu Formations of the Nigde Massif. Although there are a few marble producing quarries in the area, it is long been known that the marbles of this area are generally highly fractured and don’t yield large blocks or suitable slabs meeting the industrial demands. Thus, most of the production is currently carried out mainly as building stone, crushed stone and micronized calcite. Due mainly to high demand, micronized calcite has been becoming very significant export product to the state’s economy. Because the Nigde marbles are coarse grained with high CaCO3 content, high purity and whiteness, they are considered to be the highest quality micronized calcite quarries in the country. Consequently, the area drew many national and international investors resulting in significant increase in the number and extent of micronized calcite plants in the area. In early 1980’s, the city of Nigde had only one or two plants, it is now well over 5 including foreign investors and joint ventures. Annual production is also considerably increased from 20,000-30,000 tones to almost half a million tones and it is still in increasing trend.
