Dolomite-marble is widely used as a high-grade building material.The color caused by impurities and its stability are important criteria to judge the quality of dolomite-marble and its value in the market.Therefore,th...Dolomite-marble is widely used as a high-grade building material.The color caused by impurities and its stability are important criteria to judge the quality of dolomite-marble and its value in the market.Therefore,the study of the relation between the color and the impurities is of important commercial significance.Up to now,no detailed study on dolomite-marble color has been reported.In this work the relation beween the color of dolomite-marble and the trace paramagnetic ions is studied in detail using electron paramagnetic resonance(EPR),X-ray diffraction,polished section identification and chemical analysis.展开更多
Kaolinite(and dickite)is dioctahedral 1:1 layer silicate.Owing to the influence ofdifferent geological conditions on the mineral during and after its formation,naturalkaolinite,in general,possesses different degrees o...Kaolinite(and dickite)is dioctahedral 1:1 layer silicate.Owing to the influence ofdifferent geological conditions on the mineral during and after its formation,naturalkaolinite,in general,possesses different degrees of internal structural order.Planconand Tchoubar(1977a,1977b),Tchoubar et al.(1982)established that the princi-pal type of disorder in natural kaolinite is the displacement of the vacant展开更多
文摘Dolomite-marble is widely used as a high-grade building material.The color caused by impurities and its stability are important criteria to judge the quality of dolomite-marble and its value in the market.Therefore,the study of the relation between the color and the impurities is of important commercial significance.Up to now,no detailed study on dolomite-marble color has been reported.In this work the relation beween the color of dolomite-marble and the trace paramagnetic ions is studied in detail using electron paramagnetic resonance(EPR),X-ray diffraction,polished section identification and chemical analysis.
文摘Kaolinite(and dickite)is dioctahedral 1:1 layer silicate.Owing to the influence ofdifferent geological conditions on the mineral during and after its formation,naturalkaolinite,in general,possesses different degrees of internal structural order.Planconand Tchoubar(1977a,1977b),Tchoubar et al.(1982)established that the princi-pal type of disorder in natural kaolinite is the displacement of the vacant