Basic Geology Ooh . . . Shiny!

Guest Videos: Gneiss and Gold


It’s great to go for a hike with someone who knows what they’re looking at.



Wait. Gold? You’re ending the video right after mentioning gold?

Well, let’s head up to the Yukon and get some gold in the pan!



But how do you know that the shiny yellow stuff you’ve just collected is gold, not pyrite?



Featured image: Acasta gneiss from Canada, by Mike Beauregard, CC BY 2.0. The yellow color is probably lighting; this rock’s value is only in its age: over four billion years old!


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About BJ Deming

After getting an associate's degree in forestry, I studied geology as an undergraduate back in the 1980s but went into medical transcription instead. It just worked out better for me. The Internet renewed my interest in geoscience as a hobby, and when I retired in 2014, I decided to write a book about cat evolution. That started a new career for me (enormous fun but not self-supporting yet). Right now, besides blogging I am finishing up the first two books in a self-published ebook series about the cat family and its history. Thanks for your interest!

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