The Earth’s North magnetic pole has long been an essential tool for navigation. Compass needles with one side magnetized always point towards this magnetic pole, and early people thought a magnetic island existed somewhere in the great cold North. William Gilbert (1600, De Magnete) proposed that the Earth acted asRead More →
In finding marine fossils in the Glenshaw Formation, I have noticed three distinct preservation types within the limestone. This observation does not say that there are only three, but these are the most common I have identified. All these involve the preservation of marine creatures’ remains in limestone. Marine limestoneRead More →
This is a simple photo view of some pyrite on a local Carboniferous limestone fossil. There is only a little bit of it exposed in this specimen, but it’s flat and you can see the metallic glow quite easily at first glance. I’m not sure what sort of shelled creatureRead More →
Bornite, also known as Peacock ore, is a mineral that tarnishes to different colors, ranging from blue, yellow, and purple. This is the first sample of it I have found locally, right in my local shale pile. I have a feeling that I will be finding more of it nowRead More →