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Rockhounding Road Trip: The California Rock Garden

Editor's Note: This is the latest installment of the rockhounding travels of Thomas Farley, as he gathers materials a book about rockhounding in the...
The Dome of Topaz Mountain

Topaz Mountain Rockhounding Adventure

Story and Photos by Mark Leatherman The last time I had gone on a true mineral-hunting “vacation” was way back in 2005, when I went...
Red Rock Country Utah

Rock Science: The Colors of Hematite

By Steve Voynick Mineral collectors are familiar with the silvery-black color and submetallic luster of the crystalline and botryoidal forms of hematite. But most hematite...
Arsenopyrite specimen Panasquiera

Arsenic Family Minerals Part I: Liroconite, Clinoclase, Olivenite and Chalcophyllite

Story by Bob Jones Arsenic is a lethal poison, but nature uses it to create some very beautiful minerals. We are all familiar with the...
Olivine crystals

Rock Science: The ‘Gemstones’ of Kilauea

By Steve Voynick In mid-June, Hawaii’s Kilauea volcano was reported to be “raining green gemstones.” The internet carried images of green crystals that local residents...
Rhodochrosite, Potosi Mine

De Colores: Santa Eulalia, Chihuahua

Editor's Note: This is one of 10 Mexican locales recognized for mineral production. View the rest of the list as featured in an article...

De Colores: Boleo, Baja

Editor's Note: This is one of 10 Mexican locales recognized for mineral production. View the rest of the list as featured in an article...

De Colores: Naica, Chihuahua

Editor's Note: This is one of 10 Mexican locales recognized for mineral production. View the rest of the list see >>> The Naica mine...

Rock & Gem Kids: Setting Sights on Spinel

By Jim Brace-Thompson Spinel (magnesium aluminum oxide) forms beautiful crystals that are sometimes confused for the brilliant-red gem variety of corundum known as ruby. Unlike...

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