摘要
利用α┐β峰等信息判断金矿脉的剥蚀程度及找矿①（摘要）李存有施立达（地矿部沈阳地质矿产研究所）采用改进的热声爆裂仪，测试河北省某金矿的石英，从中发掘出多种成矿找矿信息，主要有：１．石英加热到５７３℃时，α石英转变成β石英，部分样品出现α－β峰，该峰的...
The test for quartz from a gold deposit in Hebei province of China by a improved decrepitation instrument gives much information for mineralization and exploration The results of test are as follow: When quartz is heated to 573℃, α quartz will be transformed into β quartz some samples may produce α-β peaks whose characters and appearance rates are related to the minerogenetic location,which can be used to decide the stripped degree of veins A parameter-depth model of α-β peak has been built for the mined veins,thus the stripped degree and gold resources of unknown similar veins are evaluated The decrepitation temperature of the head peaks is related to the gold content The lower the Td value is,the higher the gold content is ,which is useful in evaluating the gold content of quartz vein The results have been verified in some large gold deposits in Shandong province of China Decrepitation activity(h) is related to the structural stress,the gold content of vein and the origin of quartz The h-values of the quartzs that were rich in gold and suffered multiple structural movements and were formed mainly by replacement are lower The chief ore bodies are dispersed mostly in the negative abnormal of evaporation halo formed in h-values The Carlin-type gold deposits in Guangxi of China are also with such characters The form and type of the decrepitation curve,the height and ratio of the main decrepitation peak,and derived hydrothermal activity frequency coefficient( Pc ) and intensity coefficient ( Qd ) an all be used to predict mineral deposits Some veins have been found based on the above-mentioned informations in the forecast area
