Occasionally, turquoise replaces fossilized bones and forms pseudomorphs — an atom-by-atom replacement of one mineral with another without changing its external form — like this specimen found in the Potosi Mountain area in Nevada. The complete jaw of a rodent turned into turquoise after copper-rich solutions flowed into the fossil bed. © Rob Lavinsky, www.iRocks.com. Used with permission.
|Natural or man made||Natural|
|Origin details||the Potosi Mountain area, Nevada|