CAJ | 학술논문

选取粤西坡仔营钼矿的花岗质岩石，研究其XRD，FT-NIR 和Raman光谱特征。与花岗斑岩及远带样品相比，近带花岗岩样品XRD衍射信号弱，FT-NIR吸收信号强，石英Raman光谱信号弱。分析表明，其石英（101）晶面的XRD衍射峰、绢云母铝羟基（Al-OH）的FT-NIR特征峰（4529 cm-1）及石英本征位移峰（464 cm-1）的半高宽均大于前二者。与其他样品不同，近带样品造岩矿物含量低，低温蚀变矿物含量高；且该带内矿物结晶度、有序度及结晶温度均较低。研究认为，坡仔营钼矿发育着一个以花岗斑岩为中心的面型低温蚀变带，而控制钼成矿的石英斑岩实为该蚀变带靠近官山嶂岩体的一部分。
선취월서파자영목광적화강질암석，연구기XRD，FT-NIR 화Raman광보특정。여화강반암급원대양품상비，근대화강암양품XRD연사신호약，FT-NIR흡수신호강，석영Raman광보신호약。분석표명，기석영（101）정면적XRD연사봉、견운모려간기（Al-OH）적FT-NIR특정봉（4529 cm-1）급석영본정위이봉（464 cm-1）적반고관균대우전이자。여기타양품불동，근대양품조암광물함량저，저온식변광물함량고；차해대내광물결정도、유서도급결정온도균교저。연구인위，파자영목광발육착일개이화강반암위중심적면형저온식변대，이공제목성광적석영반암실위해식변대고근관산장암체적일부분。
Some granite samples from Pozaiying molybdenite deposits in the west of Guangdong were retrieved to characterize the spectral signature of XRD,FT-NIR and Raman.The results show that compared to the Porphyry granite and granite in the far zone,the signal of XRD and Raman of granite in near zone is weaker while the signal of FT-NIR is stronger.The authors’ana-lyses indicate that the FWHM of quartz (101)peak in XRD,Sericite peak (4 529 cm-1 )in FT-NIR and quartz peak in Raman shift from the latter are higher than those of former two.Those spectral characteristics indicate that compared with other sam-ples,the content of petrogenetic mineral in samples from near zone is lower while the content of alteration mineral is higher,and its crystallinity and crystallization temperatures are both lower.The authors’studies suggest that there may be an alteration zone,embracing the granite-porphyry,which comprised low temperature mineral.and the quartz-porphyry which related to mo-lybdenite mineralization belongs to the zone near Guanshanzhang mass.