Mindat.org is the largest mineral database and mineralogy reference website on the internet. This site contains worldwide data on minerals, mineral collecting, mineral localities and other mineralogical data. (quoted from homepage)
A recent (November 18, 2012) post provides a partial photo documentary of the once top rated Arizona mineral museum: http://www.mindat.org/article.php/1599/Arizona+Mineral+Museum%2C+Phoenix%2C+Arizona
Where are these beautiful mineral specimens now?