Study on Colour Causing of Peach Blossom Stone from Gao Mountain,Shoushan County,Fujian Province

The peach blossom stone from Gao Mountain,Shoushan County,Fujian Province,is of unique and beautiful characterisitc of the colour,in which the red spots have different shade and size.The colour causing of the samples from Gao Mountain are studied by means of optical microscope,XRD and LRM.Under optical microscope,the observational result indicates that the peach blossom stone samples from Gao Mountain contains transparent and distransparent minerals which forms pealike and red spots.The XRD testing result indicates that the mineral compositions in the samples are dickite,hematite,quartz and a little pyrophyllite.LRM testing result shows that the basic part of the samples is dickite,the red minerals with both well crystal shape and dip-dye shape are hematite,and colourless and transparent mineral grains are quartz.What is more,the distributing characteristics that the hematite being dip-dye shape commonly surrounds the well hematite crystal,cause the red sports in the peach blossom stone from Gao Mountain different shade and size.