LITTLE CHIEF MINE. 467 



timbers, filling old stopes which were completely inaccessible, so that its 

 connection between observed points in Little Chief and Carboniferous 

 ground could not be examined. For this reason, in Section B, which passes 

 through this portion, the dike has not been represented at all, though the 

 plane of the section would cross it diagonally, and it undoubtedly is cut by 

 that plane in some point. It is said that it is only 4 feet in thickness at 

 this point, and that ore existed both above and below it; this statement 

 must, however, be accepted cum grano salis. 



Immediately north of No. 3 shaft an exceptionally thick body of ore 

 was found, composed almost entirely of sand carbonates, mixed with a certain 

 amount of clay and iron oxide. It extended at its maximum development 

 eight sets of timber above and two below the level from the bottom of that 

 shaft, or about ninety feet vertically, connecting to the westward with the 

 Carboniferous ore body. 



The newer workings of the mine are opened by two large three-com- 

 partment shafts, the Daly shaft and No. 4 shaft, from which regular rectan- 

 gular systems of drifts are run. The greatest and most continuous develop- 

 ment of ore is along the northern flanks of the dike, but the great thickness 

 of pay ore found near No. 3 shaft seems to be local in character, as at 120 

 feet north it has decreased to 10 feet in thickness, and at the bottom of No. 

 4 shaft it is only five or six feet thick. No very large bodies of ore have 

 been found north of No. 4 shaft, but a number of small chambers and pock- 

 ets have been found south and west of the Daly shaft. This shaft j^assed 

 through 103 feet of Wash, 20 feet of decomposed White Porphyry, and 50 

 feet of silicious iron. To the north of it several small bodies of dark, coarsely- 

 crystalline blue limestone were found in the vein material, but no consider- 

 able ore bodies. The formation, as shown on Section J, is horizontal, or 

 rising a little to the north, but to the northeast, beyond the Daly shaft, it soon 

 commences to dip at a considerable angle, and yields considerable water, 

 which forms a serious impediment in prospecting. Except in the north- 

 eastern portion, the Little Chief ground may be considered to have been very 

 thoroughly prospected, and, as shown by the map, little or no useless expense 

 has been incurred in prospecting at the southern end of the claim, where the 

 ore horizon has been removed by erosion. The ore itself differs in no essen- 



