论文部分内容阅读
中國的華東地區江蘇省產出的紅榴石,顏色似紅寶,故當地人稱石榴紅寶石,色調艷麗、質地純凈無瑕,在陽光下晶瑩剔透,為中擋寶石中的佳品,成為中國的優勢寶石資源。 紅榴石(pyrope),又稱波希米亞榴石(Bohemain garnet)是紅色的鎂鋁榴石,呈紅色、玖瑰紅色。世界其它主要產地有阿根廷、澳大利亚、津巴布韋、南非、坦桑尼亞、馬達加斯加、墨西哥、美國亞利桑那和科羅拉多兩州亦有產出。江蘇紅榴石產於超基性巖風化殼及其殘坡積層被劃分為亞砂土層、亞粘土層和鐵錳核層,均含有寶石级的鎂鋁榴石,但鐵錳結核層為主要含礦層。超基性巖的巖性有斜輝輝橄巖、鐵鋁榴石二輝橄欖巖及蝕變超基性巖,其中鎂鋁榴石二輝橄欖及蝕變超基性巖中含紅榴石較高。江蘇紅榴石產出有二種類型:單晶粒狀及集合體塊狀,前者除自形粒狀外,尚有渾圓狀、圓狀等。粒徑以3-6mm為最多,單晶重1-4克拉,少數單晶可達12mm左右,重6-9克拉;後者由各種形態的粒狀集合體構成,其中好的單晶粒徑可達十幾、甚至幾十毫米,重達100克拉。
The eastern part of China’s eastern part of Jiangsu Province, the output of red garnet, the color is red, so the locals call the garnet ruby, bright colors, pure and flawless texture, crystal clear in the sun, the middle gem in the share, to become China’s dominant gem Resources. The pyrope, also known as the Bohemain garnet, is a red almandine that is red and red in color. Other major producing areas in the world are Argentina, Australia, Zimbabwe, South Africa, Tanzania, Madagascar, Mexico, the United States, Arizona and Colorado. The production of Jiangsu-Hong-garnet in the ultrabasic weathering crust and its residual slope is divided into sub-sand layers, sub-clay layers and Fe-Mn core layers, all of which contain gem-grade magalds, but the Fe-Mn nodules are The main ore layer. The lithology of ultrabasic rocks is clinopyroxene, armandite lherzolite and alteration ultrabasic rocks, of which the garnet is rich in attapulgite olivine and altered ultrabasic rocks. There are two types of production of Jiangsu garnet: single grain and aggregate block, the former in addition to self-granular, there are rounded, round and so on. The particle size of 3-6mm for the most, single crystal weight 1-4 carats, a few single crystal up to about 12mm, weight 6-9 carats; the latter by a variety of forms of granular aggregates, wherein a good single crystal grain size Up to a dozen, even tens of millimeters, weighing 100 carats.