Transactions . y, has a total length northwest and southeast of 3000 ft.(914 m.) and a maximum width of 1500 ft. (457 m.); the mined-out areais approximately 20 acres (8 ha.). The general course of the range isnorthwesterly and the mine shows the double pitch of Chamberlainssection, though on a vastly larger scale. On the northeast side, thepitch dips about 60° in the direction shown by the arrows, and continuesnorthwest from the Winnebago shaft for 1000 ft. (304 m.), showing astrong, well-defined hanging wall and rich ore, which extended in placesclear across the core over to the south pitch
Transactions . y, has a total length northwest and southeast of 3000 ft.(914 m.) and a maximum width of 1500 ft. (457 m.); the mined-out areais approximately 20 acres (8 ha.). The general course of the range isnorthwesterly and the mine shows the double pitch of Chamberlainssection, though on a vastly larger scale. On the northeast side, thepitch dips about 60° in the direction shown by the arrows, and continuesnorthwest from the Winnebago shaft for 1000 ft. (304 m.), showing astrong, well-defined hanging wall and rich ore, which extended in placesclear across the core over to the south pitch and frequently showedstopes over 60 ft. (18 m.) high. South of the Winnebago shaft and northof the Mills, the pitch formation is not so well defined, due no doubt to 224 THE WISCONSIN ZINC DISTRICT crossing pitches which carried the mine away from its normal course and500 ft. (152 m.) to the east. The influence of the latter are plainly seenon the south, or west pitch, which makes almost a 90° turn at a point. Fig. 4.—Kennedy mine, Hazel Green, Wis. 650 ft. (198 m.) distant from the east pitch, and thence converges rapidlytoward it until, at the Mills shaft, they are only 300 ft. (91 m.) the Kennedy incline was sunk, a third pitch carrying rich orewas cut, bearing about northeast and lying at right angles to the strikeof the two main pitches. This resulted in a phenomenally rich orebody W. F. BOERICKE AND T. H. GARNETT 225 for several hundred feet around the incline. This third pitch did notcut off any further extension of the ore to the southeast, as has sometimesbeen the case elsewhere. It did, however, affect the formation to amarked extent; and although the orebody persisted for 1000 ft. (304 m.)south of the incline, the pitches and hanging wall became less definedand the stopes dropped down in height appreciably. The ore, thoughcontinuing rich, became more of a flat deposit than the pitch type. Genesis of the Ores.—It is now generally admitted that the
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
