A reciprocal challenge.
Read this.
http://www.psrd.hawaii.edu/May02/ALH84001magnetite.html
Also look at the URL's cited and tell us why your initial assumption wasn't very good given the easily available information.
Space/Science » in reply to A challenge to all the geologists & geophysicists on HZ.
Read this.
http://www.psrd.hawaii.edu/May02/ALH84001magnetite.html
Also look at the URL's cited and tell us why your initial assumption wasn't very good given the easily available information.