Missouri. Division of Geological Survey and Water Resources · Rollo (etc.) · leaf 270
osed crystals of galena were observed in anumber of instances. There appears to be an unusual amount of pyrite associatedwith the galena. It was observed in the disseminated ore and inthe horizontal sheets, as well as in the cavities. In some places itconstitutes as much as 25 to 30 per cent of the… … DOE RUN LEAD CO. 189 1900. This mine and the Columbia No. 2, have been operated some-what intermittently, having been leased at one time by The Com-mercial Lead Company. During the period of its existence theColumbia Lead Company produced from its two mines about 18,112short tons of concentrates…
Geology · Mines and mineral resources
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