Igneous Dike Found

The Illinois State Geological Survey (ISGS) Geophysics Section received word from Peabody Energy of successful test drilling into an igneous dike that was predicted by the ISGS based on ground magnetic work in 2006. A previous test drilled prior to the magnetic survey and only a few hundred feet to the east had not encountered igneous material. Geologist Brett Denny contributes expertise in mineralogy to this ongoing project.