July 4, 2011
Happy 4th of July, everyone! In honor of the 4th, here are some red, white, and blue rocks.
|Red Standstone. Arches National Park, Utah, Fall 2005.|
Newly-deposited white travertine:
|Travertine forming in an alkaline pool. Oman, January 2009.|
And, last but not least, brilliant bright blue kyanite crystals:
|Blue kyanite. Image courtesy of Ian Stimpson’s Flickr stream.|