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《Mineral Resources and Geology》 2018-03
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Discussion on era conjecture of Guozhou stone and its lithologic characteristics of ore-bearing rock series in Lingbao City of Henan Province

FENG Jiantao;XI Shanfeng;WANG Meng;LI Guoqi;FENG Feifan;PEI Manyi;The Fourth Geological Exploration Institute of Henan Bureau of Geo-Exploration &Mineral Development;  
Guozhou stone is found out in a set of aubergine thick bedded mudstone of Sinian system in western Henan.The lithologic feature of ore-bearing rock series is listed as follows.The clay mineral content is above90% with high SiO_2 and Al_2O_3 contents.The rock color changes with the different Fe_2O_3 content.It is shown that the thick bedded mudstone has a conformable contact relationship with the overlying Sinian Luoquan Formation of tillite.They are both belonged to Luoquan Formation.The profile among the Luoquan Formation of Guozhou stones is different from those in Linru County and Queshan County.Based on the geological profile measurement,comparison of regional geology and the sequence stratigraphy study,the hosted strata and sedimentary era of Guozhou stones are discussed in this paper as well.
【Fund】: 河南省财政地质勘查项目“河南省灵宝市朱阳镇虢州石预查”(任务书编号:豫国土资发[2016]46号)资助
【CateGory Index】: P619.231
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