Phengite
Monday July 13, 2009
I'm here to correct the record after my field trip to the Gold Country a few weeks ago. We spent a lot of time looking at and looking for the green mineral called mariposite. Some of us, including me, told everyone in the group that mariposite is the same thing as fuchsite, a chromian muscovite. But I was wrong: it's a chromian phengite instead. Learn more about it in the Gallery of Mica Minerals. By whatever name, it's attractive stuff. Indeed, green-and-white yard boulders all over California and I'm sure elsewhere are mariposite-bearing quartzite mined today where once upon a time, hardier men than me delved into the Mother Lode for gold.
Mariposite — Geology Guide photo
Comments
You may also want to look at your accidental error in your ‘millionare’ questions where you have a horse sitting on a hill in between grabens rather than a Horst
Are you sure? The only place I used the term horse, I meant the term horse.