论文部分内容阅读
伊尔加思地块(Yilgarn Block)是大洋洲大陆上最大的太古界岩石出露地区。它由一系列线状的火山岩和沉积岩带所组成,其中最大者从诺斯曼到维卢纳,往北北西方向延伸,包含了此地块所有的主要硫化镍矿产地。卡尔博义德崖矿化是产在侵入到一个小层状杂岩体里面的古铜辉石-硫化物伟晶相角砾岩岩管中。对诺斯曼到维卢纳地区的几个小的层状侵入体已有报导,但卡尔博义德崖岩体是唯一已知含有较好镍矿矿化的层状侵入体。此地矿化是在1969年对受碳酸镍浸染的镁铁岩进行研究而发现的。
The Yilgarn Block is the largest archean rock outcrop on the continent of Oceania. It consists of a series of linear volcanic and sedimentary rock belts, the largest of them from Norseman to Viruna, extending north, southwest and west of the block containing all the major nickel sulphide minerals. Kalbayi Deya mineralization occurs in the Palaeo-pyrex-sulphide pegmatal breccia tubes that intrude into a small laminar complex. Several small stratiform intrusions from the Norseman to the Willena region have been reported, but the Karlboyd Cliff body is the only stratiform intrusion known to contain better nickel mineralization. The mineralization here was discovered in 1969 on nickel carbonate-impregnated mafic rocks.