NOAA Ocean Explorer

www.oceanexplorer.noaa.gov

NOAA’s Ocean Explorer offers users the opportunity to learn about current expeditions and to explore for themselves virtually.  Also provides a nice section on the technology of ocean exploration and a full gallery of images.

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Mineralogy Database

http://webmineral.com/

“This mineral database contains 4,442 individual mineral species descriptions with links and a comprehensive image library.” Tables are available on crystallography, X-Ray powder diffraction, chemical composition, physical and optical properties, Dana’s New classification, Strunz classification, mineral specimen images, and alphabetical listings of mineral species.