Identifying raw turquoise

Good afternoon!
I have a chunk of turquoise that is approximately 2-1/2" wide and 1-1/4" thick.
If possible, I would like to know what type it is and if it is from the Nevada or Arizona area.
Thank You…

Looks like turquoise mountain rough. You should be able to do a google search for turquoise mountain rough to get an idea of price, you might try to get some information.

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