Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/156

128 F³. of the Iron sandstone. This sandstone makes the crest of the ridge and covers the south flank with numerous bowlders. It weathers decidedly red, and at the nose of the hill shows about 6′ thick in a prominent ledge, dipping N. 10° W. 45°.

Some difficulty was experienced in suitably preparing this ore from the fact that both the roof and the floor slate sticks to the ore mass, which itself shows in places thin bands of a hard red slate.

The Zimmerman ore is about at the western end of this central valley Clinton ridge; westward this ridge is entirely eroded, and any profitable ore in this vicinity must be sought for along the flank of Paddy’s mountain, where the débris of the Medina sandstone makes its outcrop difficult to locate.

This lower ore bed series is also said to show an outcrop for some distance up Weikert run, south of White mountain, but not opened there.

The Clinton ore measures extend west a short distance into Mifflin county, making a low ridge as far as Aumiller’s place; but only containing the lowest ore bed.

Just west of Cherry Run Station the railroad cuts through red and brown shale, dipping 70° N. W., and at the west end of this cut, test pits, which had only partial success, had been put down for ore.

Just below the bridge on Cherry run, these Clinton shales had a southwest dip of 50° and are well exposed, so that there must be a small local anticlinal roll running along the middle of the basin as suggested by the structure further east towards Laurelton.

Going up Cherry run the dip is steeply northwest at first, but soon reversed in a tight synclinal, marking the extension of the Hartleton basin.

The first ore drift is about 100 yards north of the railroad, driven northwards 50′ to the ore, and then east and west on the bed. Nearly a thousand tons are said to have been mined at this point and shipped to the Berlin Iron Works, Bloomsburg and Danville. The bed when first struck, as reported by Mr. Johnson, was 2′ thick; but pinched eastward