Penn Minerals (Popularity: )
http://www.pennminerals.com/ Rocks, minerals and fossils from the State of Pennsylvania and around the world. Also information on collecting sites. Category:
Science - Earth Sciences - Geology - Rocks and Minerals
Universal Rock Shop (Popularity: )
http://universalrockshop.com/ Large selection of mineral specimens from around the world for sale online. Nice accompanying descriptions and photos. Category:
Science - Earth Sciences - Geology - Rocks and Minerals
UK Journal of Mines and Minerals (Popularity: )
http://www.ukjmm.co.uk British magazine for the collector - mineralogist. Articles for mineral collectors, mine historians, museum curators and topographic mineralogists. Category:
Science - Earth Sciences - Geology - Rocks and Minerals
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