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Earth Science in the News: Erratics, Earthquakes, and Ice
Editor's Note: Enjoy this compilation of rock, gem, mineral-related news of the day.
By Jim Brace-Thompson
Ever Bigger Boulders Emerge in Nebraska
Earlier this summer, the Lincoln...
The Mind of a Mineral Collector
Editor's Note: The Rockhound Review is a space where guest contributors can weigh in on topics stirring within the rock, gem and mineral community...
Earth Science in the News: Neanderthal Caves and Planetary Exploration
By Jim Brace-Thompson
Cave Deposits Hint at Happenings of Neanderthals
Speleothems are limestone or dolostone deposits in caves (think of stalactites and stalagmites). They form when...
Earth Science in the News: Fireballs and fossils
By Jim Brace-Thompson
Fireball from Space Lights up Turkeytown
An asteroid estimated to be 6 feet in diameter created a fireball 40 times brighter than a...
On The Rocks: Colorado Mine Camp Lore
By Bob Jones
While in Denver enjoying the excellent shows, I hope you have planned extra time so you can do some sightseeing in Colorado....
Exploring Woodward Ranch ‘Biscuit’ Cabs
By Antoinette Rahn
Welcome to the newest addition to Rock & Gem's blog offerings. The ‘Just Off the Wheel’ blog will showcase the artistry of cabochons, the...
De Colores: Milpillas, Sonora
Editor's Note: This is one of 10 Mexican locales recognized for mineral production. View the rest of the list as part of an article...
De Colores: Los Lamentos, Chihuahua
Editor's Note: This is one of 10 Mexican locales recognized for mineral production. View the rest of the list as part of an article...
What to Cut: Royal Imperial Jasper
By Russ Kaniuth
Royal Imperial jasper is one of several types of Imperial jaspers that come from the Guadalajara region of Mexico. There are pink,...
Rock & Gem Kids: Considering Clinochlore
Chlorite Group
(Mg,Al)6(Si,Al)4O10(OH)8
Clinochlore is in the chlorite group of minerals. Its name comes from the Greek words klino (“to incline”) and chloros (“green”) because it...
