Discover a detailed progress report on the Brown Hematite ore districts of Lehigh County, with insights into the geology, mining history, and ore analyses that shaped early industrial work in the region.
This edition compiles topography, rock formations, and field observations from the 1874 report, including how Potsdam sandstone, magnesian limestone, and Hudson River slates shape ore deposits. It also outlines a sequence of mine ranges, descriptions of ore types, and early mining practices at numerous workings around Fogelsville, Emaus, Alburtis, and the surrounding area.
- Learn how regional geology ties the ore districts to rock formations like Potsdam sandstone and magnesian limestone.
- See how ore occurrences, dipping directions, and mine depths were documented and analyzed.
- Explore specimen descriptions, early ore analyses, and the role of damourite slate in ore localization.
- Get a sense of the historical map plates and the organization of mine listings across several ranges.
Ideal for readers of mining history, historical geology, and the industrial heritage of Pennsylvania.