Rockhounding in Montana – What Rocks You Can Find and Where
Upcoming Rockhounding Events in Montana Sapphire (Corundum) Streak: Colorless Hardness: 9 Chemical Formula: Al₂O₃ Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium. It is typically blue, but natural sapphires also occur in yellow, purple, orange,…
Rockhounding in Florida – What Rocks You Can Find and Where
Upcoming Rockhounding Events in Florida Agatized Coral Agatized coral occurs when silica in the ocean water hardens, replacing the limy corals with a form of quartz known as chalcedony. This long process (20-30 million years) results in the formation of a “pseudomorph,” meaning that one mineral has replaced another without having lost its original form….
Dr. Cool Geode Kit Review
I picked up this geode cracking kit at a local hobby store and try it out! It includes 4 geodes from two different mines, safety goggles, a magnifying glass and 1 display stand. Overall, it’s a pretty good kit but the trancas geode took me about 3 minutes to break open and I’ve split my…