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Aragonite: A cave dwelling and coral-shaped mineral

By Jim Brace-Thompson Aragonite was named for Aragon, Spain, where it was first discovered, but it’s a common mineral that is found worldwide. Aragonite is a...
Glauberite pseudomorph1

Glauberite: It’s Not Always What It Seems

By Jim Brace-Thompson Do you have a mineral labeled “glauberite” in your collection? I do, but I recently learned that it may not be what...
Anglesite vug

Socorro’s Mineral Cornucopia

Story and Photos by Mark Leatherman Anytime a rockhounding club has the privilege of being able to go underground as part of an extended field...

Parting Shot: Cobaltoan Calcite

Editor's Note: Every issue of Rock & Gem concludes the same way, with the Parting Shot. Page 82 boasts a beautiful rock, gem, mineral,...
Day mine Calcite

Calcite — Twins and Other Oddities

By Bob Jones Is there a mineral collection lacking at least one spectacular calcite? I doubt it. After all, this lovely calcium carbonate is found...

A Formation without Explanation: Pseudocubic Quartz and Keokuk Geodes

Story and Photos by Jordan D. Marché II Over the past few years, I’ve become increasingly aware of an unusual type of mineralization that occurs...

A Tale of Two Blue Barites

By Mark Leatherman Barite has got to be one of my favorite minerals to collect for a variety of reasons: 1) its unique heft for...
Feldspar-quartz

Summer Rockhounding: Find Metamorphic Minerals along Utah’s Skyline Drive

Story and Photos by Alice Sikorski When the summer heat sets in and you want to go rockhounding, what’s a person to do? In the...
Red clay Permian

Moroccan Aragonite: Specimens by the Millions

Story and Photos by Bob Farrar Mention Morocco to a rockhound, and it is likely to bring to mind visions of exotic, rare, and beautiful...

Issue Highlights: October 2018

The October issue of Rock & Gem takes us to many fascinating places, both above and below ground. • Argentina's Banded Rhodochrosite: Centuries of Precipitation and...

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