前言在南非北部边界附近的墨西拿地区,迄今已发现九个角砾岩筒,其中三个含矿.墨西拿和坎贝尔矿山的两个含矿角砾岩筒称作“L”矿脉和西矿脉,并不出露地表,是经过长期详细勘探附近的浸染交代脉状矿床之后才发现的.哈泊矿山的矿化交代角砾岩称作“A”矿脉和“B”矿脉,对这两条矿脉本文不准备详细介绍.角砾岩筒,无论是含矿的和不含矿的,都沿着一条北东走向、宽1公里、长20公里 Foreword Nine breccia cylinders have been found so far in the Messina region near the northern border of South Africa, of which three ore-bearing breccia cylinders containing three ore-bearing Messina and Campbell mines are called “L” The veins and the western veins did not reveal the surface and were found after disseminated vein-type deposits near the long-term detailed exploration. The mineralized breccia in the Ha’erm mine is called the “A” vein and the “B” This vein is not going to be detailed in this article. The breccia barrels, both ore-bearing and non-ore-bearing, are all along a northeast strike, 1 km wide and 20 km long