Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/153

Rh mill dam. Some 400 or 500 tons of ore are said to have been taken from a 10″ bed here between yellow slates, all of which was shipped to the old dismantled Berlin Iron Works furnace, situated on Penn’s creek, 1½ miles south of Laurelton.

The drift was not carried in far and is about 40° above water level, the hill rising probably from 75′ to 100′ higher. The dip was quite steep, 60° to the southeast, which is about the inclination of a series of red and gray slates underlying the bed along the creek bank further north; but south and north of this point the dip is not over 15.°

The ore sandstone, if existing at all here, is both thin and shaly and split into two bands, separated by slate; and the fact that this rock is sparingly exposed at the bend of the road near Bower’s store makes it probable that the ore-bed developed belongs to the Danville series, and is not the Sand Vein bed.

Rutherford’s farm to the west of Laurel creek worked this bed under lease to Schure & Co.

About a mile west, the ore ridge begins to assume shape and height along the south flank of Paddy’s mountain, and the sandstone is exposed at Hoffman’s house, 300 yards north of the main road, in a gap made by a small branch stream. Its dip and that of the series of gray sandy slate and shale, in places calcareous, overlying it, is from 30° to 35° and up to 40° towards the southeast.

Hoffman’s mine is opened to the north and beneath the ore sandstone, and is unquestionably developed on one of the Danville beds, which gives more probability to the horizon of the Bower and Rutherford openings. The drift is rather badly located on the west side of the ravine, where the hill is low and therefore presents but a limited opportunity for obtaining long stopes of ore. On the east side of the ravine the hill is much higher and the ore bed could have been much more advantageously opened. No information could be obtained as to the extent of the development here, or the character and thickness of the bed. The ore ridge is well out from the mountain, separated by a ridge of variegated, but generally brownish-red fissile shales.