Thursday, April 25, 2019
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Pyrolusite dioxide

Rock Science: Pyrolusite and Manganese

By Steve Voynick Manganese is an element that we rarely, if ever, see in its metallic state, but that nevertheless plays a big part of...
Rock formations near San Andreas Fault

Rock & Gem Kids: Earthquake Faults

By Jim Brace-Thompson Portions of our continents are stable, and the earth seldom moves under our feet. But in places like my home state of...

Rock & Gem Kids: Examining Ozokerite

By Jim Brace-Thompson “What is this stuff?” I asked myself as I picked up a lightweight chunk from a silent auction table at a gem...
Kartchner Caverns stalactites

Arizona Underground: Mine Tours, Museums, and Caves

Story and Photos by Bob Jones With winter set to arrive soon, tens of thousands of folks will head into the great Southwest. Quartzsite becomes...