re: re: Blue rocks in Nature?
After a web search I found this startling image:
It's described on this page:
Coniston Coppermines
http://www.ruskinmuseum.com/coppermines.htm
Apparently it is a copper sulfate mineral. The sulfate would be appropriate for Mars but I don't know if copper was detected at the Pathfinder or Viking sites.
I'll ask this of the Pathfinder APXS team members.
Bob Clark
