Quartz is gangue mineral widespread in all types of gold deposits in Guidong Area and is an important rock-formingmineral and gold-carrier mineral as well.
石英是桂东地区各类金矿床中普遍出现的脉石矿物，同时也是重要的造岩矿物和金的载体。
2
Using the changing of micro-void of a typical rock-formingmineral, the plagioclase solution degree is proposed as a new index to evaluate the weathering degree.
本文提出了以标志性造岩矿物斜长石的显微孔隙变化为特征的风化度评价新指标——斜长石溶蚀度。
3
Rock-formingmineral, olivine, pyroxene, hornblende, orthoclase, feldspar, plagioclase, mica, quartz, biotite, calcite and other common metal and nonmetal minerals.