There were a series of three openings to the iron deposit in Cornwall located at Big Hill, Middle Hill and Grassy Hill that were originally owned by the Cornwall Ore Banks Co., but were eventually owned by Bethlehem Steel who eventually closed the mines in 1979. This deposit of magnetite was produced by the replacement of limestone by hydrothermal activity during the Jurassic from a diabase intrusive, so in effect the deposit is a skarn.
The eastern part of the state is covered with crystalline rocks producing potential gold lodes as well as placer gold. This gold weathers out of the crystalline rocks and is collected in the rivers and streams of eastern
There are several streams producing placer gold that came in
and Lancaster in glaciers that have advanced into the state during the past million years. Any of these glaciers were capable of bringing gold down from York Counties where one of the richest gold belts the world the Abitibi is found in Québec and Canada . According to some geologists there have been as many as 24 episodes of glaciation that have affected the northern part of the Ontario in the past 2.5 million years. United States
Although the eastern part of the state is mostly covered with crystalline rocks that produce gold as lode gold that weathers out so it becomes placer gold that collects in the rivers and streams found in eastern
One of the places where gold has been found is along the
Susquehanna River where it has been found as both nuggets and flakes of gold. Generally has been a good place to look for gold as well as in the surrounding counties. In Wyoming County placer gold is associated with the deposits of diabase that make up the tops of many ridges. The action of weathering releases the gold from bedrock allowing it to migrate downhill into the streams and rivers in the area. York County
During the Civil War the great battle at
was fought on some of these diabase ridges with names like Little Round Top or Cemetery Ridge. There is no doubt that the rivers and streams around the Gettysburg Battle Site undoubtedly contain gold. Gettysburg
The best way to find out where the gold is in
is to research old newspapers and town histories. The state only keeps track of commercial mining operations and not that of individual prospectors. Old newspapers are often the source of stories about where one of the local citizens has found gold in their town. Pennsylvania
prospecting, http://www.e-goldprospecting.com/html/gold_pennsylvania_prospecting.html Pennsylvania
Eastern Gold, http://doccopper.tripod.com/gold/easternAu.html
Jeri Jones http://www.jonesgeo.com/home.
There are several gold prospecting clubs that are active in
that can supply more information about Pennsylvania gold. Pennsylvania
Our thanks to Stephen Shanks of the Pennsylvania Geological Survey for additional information.