General Contents – C.B. & Q. R.R. System Clay Notes; Clay Notes along the Frisco R.R. Note Book No. 3: Stratigraphy – 1st Magnesian Limestone, 2nd Magnesian Limestone, 2nd Sandstone, Burlington Limestone, Encrinital Limestone: Minerals – copper, galena, lead, limonite, malachite, pyrite, smithsonite, sphalerite: Lithologies – chert, clay, coal, conglomerate, dolomite, felsite, fireclay, granite, gravel, lignite, limestone, pegmatite, porphyry (extrusive igneous), sandstone, "slate" (hard, often bituminous shale), tripoli: Mines/quarries – brickyards, clay kilns, clay pits, clay shafts, coal shafts, copper prospects, lead shafts, potteries, zinc shafts; Sligo Furnace, multiple named operations: Paleontology - [none noted]: Hydrology [...]
