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What Are Crinoid Fossils?
What are crinoids? These marine creatures lived and thrived in ancient saltwater oceans millions of years ago. Early primitive examples lived in the shallow...
What Are Cystoid Fossils?
Cystoids and crinoids are cousins that look alike but have distinct differences. Cystoids occupied an ecological niche along with the crinoids. Unfortunately, cystoids did...
What are Gold-Pan Concentrates?
Gold panners tend to categorize their pan concentrates as either gold or “black sand”—and discard the latter without much of a second look. And...
Pyrite Suns & Coal Mining
With their thin, flat, disk-like shapes, brassy color and bright metallic luster, “suns” are the most eye-catching and popular of all pyrite concretions. Concretions,...
What are Pyritized Seashells?
What are pyritized seashells? How do you find them? Such a fantastic find, once it is cleaned, can exhibit spectacular arrays of sparkling pyrite...
Is Gold Used in Gaming Devices?
Gold conjures up images of shiny coins and beautiful jewelry, but did you know that gold is in your gaming devices? Behind that plastic...
