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Rockhounding and Clubs Create Lifelong Connections
By Jim Brace-Thompson
Indian Mounds Rock & Mineral Club has a juniors program that took on new life with 11-year-old Joan (Afton) Stoker. While 9-year-old...
Exploring Nisyros’ Volcanic Caldera
By Helen Serras-Herman
The Greek island of Nisyros lies in the middle of the Aegean Sea. It is part of the Dodecanese Island group and...
Were Icthyosaur Eyes Bigger Than Their Bellies?
By Jim Brace-Thompson
Talk about indigestion! Whenever I pigged out at the dinner table, my Mom would warn me that my eyes were bigger than...
CALYMENE celebra — The Pride of Wisconsin Fossils
By Joseph “PaleoJoe” Kchodl
The common Silurian trilobite, CALYMENE celebra, is easy to identify, mostly because of the rock it is found in, the color, and excellent...
Trilobite Reveals Lead Up to Extinction
By Joseph “Paleo Joe” Kchodl
As you may be well aware, trilobites are an extinct form of arthropod related to insects, crabs, crayfish, and horseshoe...
Rethinking Radiocarbon Dating
By Jim Brace-Thompson
If you think that chemical elements are chemical elements and are uniform, you are wrong.
Pretty much every aspect has what is known...
Getting to Know the Mind Behind The Arkenstone
The Arkenstone Gallery of Fine Minerals is a sponsor of
By Antoinette Rahn
There are numerous illustrations of the 17th-century phrase, “One good turn deserves another.”...
Chicxulub Crater May Hold Implications of Life’s Beginnings
By Jim Brace-Thompson
A recent article in the journal Science Advances takes a look at the Chicxulub crater. The crater, located on Mexico's Yucatan Peninsula, was left...
Parting Shot: Pentagonite, Calcite, and Heulandite
While in Tucson in early 2020, Jonathan Stone of Studio Mineralia had the opportunity to photograph this remarkable specimen of a small cluster of...
Visiting with Geologists and Lapidary Artists — DiWolf
By Helen Serras-Herman
Wolfgang and Diana Mueller, known by their company name DiWolf, is a dynamic couple, with lots of knowledge and years of experience...
