更多metalliferous例句

1. The primary sources of gold are reefs, either in quartz or in metalliferous veins of galena and the various pyrites.
2. Traces of this metal, chiefly in the boulder form, are found in the metalliferous horizontal strata.
3. It is manifestly the same great metalliferous rock which accompanies the lead ore of Missouri and mines of Peosta or Dubuque.
4. The occurrence of this metal in the copper-bearing and other metalliferous rocks of this region, may be confidently affirmed.
5. At Vanmater's, the metalliferous clay marl is overlaid by a grayish sedimentary limestone.