. Transactions and proceedings of the New Zealand Institute . well shown onthe plan, and it will be seen that there is also a subordinate series of diagonalveins crossinsr them. The lode-matter consists of crushed and altered schist, impregnatedwith pyrites and traversed by defined and continuous seams of quartz,which may run on either or both walls, occasionally occupying the wholewidth of the vein, with frequent splits and branch stringers. The quartzseams often show a very fine comb-structure. In the upper levels the ore was oxidized, and extraordinary valueswere frequently obtained from sm


. Transactions and proceedings of the New Zealand Institute . well shown onthe plan, and it will be seen that there is also a subordinate series of diagonalveins crossinsr them. The lode-matter consists of crushed and altered schist, impregnatedwith pyrites and traversed by defined and continuous seams of quartz,which may run on either or both walls, occasionally occupying the wholewidth of the vein, with frequent splits and branch stringers. The quartzseams often show a very fine comb-structure. In the upper levels the ore was oxidized, and extraordinary valueswere frequently obtained from small patches near the surface. In depththe ore is reported to be refractory, and sulphides—pyrite, galena, andblende—become prominent. The individual veins have been described in detail in Bulletin No. 5, Geological Survey. The group also includes the Alta scheelite-vein,which lies about three miles to the east of the main grouj). This seemsanother instance of the segregation of ores. ^^ct.^ O* BENDIGO VEINS Surveys by G. F. Hosking Si-u/f o/


Size: 1675px × 1492px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectscience