Report of progress 1874-1889, A-Z .. . One 15 and one 12-horse power engine were used forhoisting, and 3 (Allen, Tamaqua,) steam pumps for pump-ing water. A map of the various openings here is shown on page 345,Pig. 16, constructed by Mr. O. E. Heinrich, 1879, who alsomade a report to the company at that time. While the geological position of this mine is identicalwith the others of this range its individual peculiarities arestrongly marked and show a very confused and irregularstructure. The surface rock is all Mesozoic conglomerate, here adense brecciated limestone of a gray-white color, rar
Report of progress 1874-1889, A-Z .. . One 15 and one 12-horse power engine were used forhoisting, and 3 (Allen, Tamaqua,) steam pumps for pump-ing water. A map of the various openings here is shown on page 345,Pig. 16, constructed by Mr. O. E. Heinrich, 1879, who alsomade a report to the company at that time. While the geological position of this mine is identicalwith the others of this range its individual peculiarities arestrongly marked and show a very confused and irregularstructure. The surface rock is all Mesozoic conglomerate, here adense brecciated limestone of a gray-white color, rarelycontaining any red or pink colored limestone like those fur-ther east and made up of angular fragments of limestonefrom the size of a pea to a mans fist. Occasionally chunksof dark-green serpentine occur, giving the rock a checkeredappearance. It is capable of a high degree of polish and would makebeautiful table slabs if it could be obtained in j)ieces ofsufficient size. Seco,id9(iol.§ujrveA/,^a-:/i^^^. 3teportX,*^^.p. 3i5. 346 D. REPOET OF PROGRESS. E. V. DINVILLIERS. This rock forms the hanging wall or roof of the ore,though, occasionally, I am informed, true red shale is metwith in that position. The gangue rock appears to be limestone wherever metwith as horses or wedges that divider or cut into the ore orfoot-wall trap. The latter rock occurs as numerous small dykes of greateror less persistency, shooting out from the red shale countryto the south with a general N. W. and S. E. course, dip-ping to the south-west at angles of from 35° to 50°, No ore has been found to the north of them. The ore bodyapparently lies in pockets in limestone on the south-westside, pinching out to nothing and swelling in thick massesinto the hanging wall. These deposits have no very great extent along line ofbearing, but rather occur en echelon^ but always on thesouth side the trap. The unusual strike of the beds will be at once remarked,being turned around 90° from tlie customary N.
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Keywords: ., bookcentury1, bookdecade1870, booksubjectcoal, booksubjectgeology
