During the past two-and-a-half years of traversing the central part of Gusev Crater, NASA’s Mars Exploration Rover Spirit has analyzed the brushed and ground-into surfaces of multiple rocks using the ...

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UNIFORM with the “Rock Minerals” of the same author, now in its second edition, the work which Prof. Iddings has now completed will take an assured place as the fullest and most comprehensive ...

A little knowledge of rocks and minerals will help you identify everything from jewelry to fossils. While reading this article may not turn you into a geologist, it should give you the basic ...