摘要
汝城七彩石是湘东南地区新发现的彩石类矿产之一,矿床分布于湘东南汝城至资兴一带。区内共发现七彩石矿9层,矿层产于上震旦统丁腰河组(Z_2d)中下部,薄层硅质岩夹板岩类为赋矿岩石。矿层呈层状在地表连续或断续出露,矿层形态、产状严格受层位控制,走向以北西向为主,近南北向、近东西向为次,走向长1.0~12.0 km,厚2.0~6.6 m。通过对矿床地质特征、矿层及矿石特征的分析研究,初步认为,汝城七彩石受上震旦统丁腰河组(Z_2d)层位控制,矿床成因为热水交代沉积,其丰富色彩和图案花纹的形成与不同矿物组合、交代蚀变和氧化作用强度有关。
The Rucheng seven colour stone is a newly discovered mineral of coloured stone in southeastern Hunan. It was distributed in the Rucheng country and Zixing city of Chenzhou city. The deposit is discovered by nine lays. It hosted in the middle and lower part of dingyaohe formation（Z2d） of the upper series of sinian system. Rock types of the thin layer of siliceous rocks clipped the slate were the host rocks. The ore deds were layered continuous or intermittent exposed. The occurrence and form of ore beds were strictly controlled by the strata.The mainly strike of ore beds is northwestwards, the nearly north-south, the nearly east-westward of ore beds comes next. The length of ore deds trend is 1.0~12.0 kilometres, thickness is 2.0~6.6 meters. Studies on deposit geology, seam output characteristics and ore characteristics preliminarily reveal that the Rucheng seven colour stone deposit is controlled by the dingyaohe formation of the upper series of sinian system（Z2d）. The ore genesis is the hot hydrometasomatism and sedimentary. The formation of abundant color and the picture graphs related to the different mineral assemblage, metasomatic alteration and the oxidation strength.
出处
《国土资源导刊》
2018年第1期27-35,共9页
Land & Resources Herald
基金
湖南省地质勘查项目"湖南省汝城县七彩石矿调查评价"(编号:20160309)
"湖南省汝城县大丰矿区七彩石矿详查"(编号:20170318)
关键词
汝城七彩石
丁腰河组
硅质岩
矿床特征
矿床成因
湘东南
the Rucheng seven colour stone
dingyaohe formation
siliceous rocks
deposit characteristics
genesis of deposit
southeastern of Hunan
