WPClipart Home Rocks and Minerals Section - A geological resource to greatly ease finding appropriate images for projects and research. See the Links page for further research information.
 
Ulexite  continuous optically active fibers
Ulexite continuous optically active fibers

484x442
Ulexite  with clay and Realgar  hydrous Sodium Calcium borate
Ulexite with clay and Realgar hydrous Sodium Calcium borate

595x421
ultramarine  natural pigment
ultramarine natural pigment

374x296
Umber  raw pigment
Umber raw pigment

400x400
Uraninite
Uraninite

237x175
Uranophane
Uranophane

654x486

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