Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/128

100 F³. of soft fossil ore has been obtained from the ore beds underlying it. These beds have been pretty well robbed of their ore on both sides of the mountain for some distance west of the river.

A short distance below Turtleville, the Ore sandstone is exposed with a south dip in the northern sub-axes of the mountain anticlinal, here known as the “Longstown ridge.” A small ravine, known as Miner’s Hollow, flows in the compressed synclinal between the two sub-axis and carries the Ore sandstone and accompanying fossil ore bed for about a mile west of the river. The lowest of the Danville ore beds las been largely worked here, the thickness varying from 20″ to over 3′, largely soft fossil ore. This ravine has been the means of developing also the northern dip of the south anticlinal, which is so flat at this point that every small branch of the stream seems to cut into the ore outcrop. This accounts for the large quantity of soft ore found; and as the ridge rises to a considerable elevation, the stoping ground was everywhere ample. Only one mine was actively worked during 1888, owing to the Union furnace being out of blast. It is situated about ½ a mile from the river and was worked upon a miner’s contract, upon the Danville bed, which exists in good condition there.

This bed has furnished by far the largest percentage of ore mined further west on the north flank of the mountain, and occurs behind or south of the Ore sandstone, which, owing to the prevailing low dips, creates a distinct ridge away from the foot of the mountain.

A number of abandoned openings were noticed further west, especially between the two roads crossing the mountain into Snyder county.

Wolf’s opening, south of the school and church, and Mertz’s opening, on the west side of the main mountain road, both furnished large quantities of ore to the Union furnace, and both are probably opened in the Danville beds on a dip of 30°-85° northwest.

Krause’s mine. The road from Buffalo township keeps behind the Ore sandstone ridge for about a mile in the