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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,…

Returning to Avant FIsher Mountain – Quartz Mining in Arkansas
Disclaimer: While this post may sound like a lot of whining, I had a great time on Fisher Mountain and look forward to returning. Trip One – Mistakes Have Been Made This summer, I have visited the Avant Mining Fisher Mountain location twice. The first trip of the summer was intended to be a trip…

Rockhounding in Delaware – What Rocks You Can Find and Where
Muscovite Mica Streak: White Hardness: 2 – 2.5 Chemical Formula: KAl2(AlSi3O10)(F,OH)2 Muscovite is the most common mineral of the mica family. It is an important rock-forming mineral present in igneous, metamorphic, and sedimentary rocks. Like other micas it readily cleaves into thin transparent sheets. Muscovite sheets have a pearly to vitreous luster on their surface….