The Ore Deposits of South Africa With a Chapter On Hints to Prospectors
The Ore Deposits of South Africa With a Chapter On Hints to Prospectors
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At present some 3, 500 feet of the lode is being exploited. This portion is divided into two sections by a longitudinal fault. The western section is 1, 500 feet in length and the eastern section is 2, 000 feet in length, a barren stretch of 700 feet separating the two. The lowest drive is some 900 feet below the outcrop.
The ore-body consists of quartz lenticules intercalated with small bands of schist. Its width varies from 25 to 50 feet, of which 8 to 20 have proved to be worth working. The ...quartz contains in addition to the galenite a small amount of zinc, iron and copper sulphide. The oxidized zone is characterized by a considerable quantity of the chromate of lead, crocoite.
In the eastern section there is a parallel band of quartz lenticules lying 150 feet to the south, which, however, has not been found in the western section.
Galenite concentrates have been shipped for several years. From January to June, 1908, inclusive, concentrates contain- ing 510 tons of lead valued at, 6, 292 were produced.
What to read after The Ore Deposits of South Africa With a Chapter On Hints to Prospectors?
You can find similar books in the "Read Also" column, or choose other free books by J P James Paul Johnson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
At present some 3, 500 feet of the lode is being exploited. This portion is divided into two sections by a longitudinal fault. The western section is 1, 500 feet in length and the eastern section is 2, 000 feet in length, a barren stretch of 700 feet separating the two. The lowest drive is some 900 feet below the outcrop.
The ore-body consists of quartz lenticules intercalated with small bands of schist. Its width varies from 25 to 50 feet, of which 8 to 20 have proved to be worth working. The ...quartz contains in addition to the galenite a small amount of zinc, iron and copper sulphide. The oxidized zone is characterized by a considerable quantity of the chromate of lead, crocoite.
In the eastern section there is a parallel band of quartz lenticules lying 150 feet to the south, which, however, has not been found in the western section.
Galenite concentrates have been shipped for several years. From January to June, 1908, inclusive, concentrates contain- ing 510 tons of lead valued at, 6, 292 were produced.
What to read after The Ore Deposits of South Africa With a Chapter On Hints to Prospectors?
You can find similar books in the "Read Also" column, or choose other free books by J P James Paul Johnson to read onlineMoreLess
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