All Free Things A searchable directory including games, screensavers, music, clip art, webmaster resources, and more.
ATHENA MINERALOGY Mineral database : Alphabetical list of minerals with formula and system, Minerals, with formula and system, ordered according to Strunz classification, Search database for mineral names.
Codelco Educa Definiciones A B C D E F G H I J K L M N O P Q R S T U V X Y Z.
crocoite.com The site to guide you to the minerals and mineral localities of Tasmania, mainland Australia, and New Zealand.
Mindat.org Mindat.org is probably the largest mineralogical reference on the internet. It was started (as a DOS database) by Jolyon Ralph in 1993 - and was launched for free on the web in October 2000.
MinDirectory.com Link portal of minerals,rocks,gems,meteorites and other related shops,dealers and useful sources
Mineral 1.0 Welcome to Mineral 1.0! A browsable online mineral database (with photos) and interactive quizzes/tests. Some of the included quizzes are the systematic identification of minerals, their chemical formula and Mohs' Scale of Hardness.
MinMax Mineral Information System MinMax is a complete Mineral-Information-System: A database of Minerals and Mineral collecting locations. The main aspect is to provide rockhounders worldwide with all information about mineral collecting sites.
Online guide to gemstone prices First online guide to colored gemstone prices. Gemstone prices database is updated weekly. Fast and precise online gemstone appraisal. Gemval.com service is free.
PortalCiencia Portal de Ciencia: Astronom√≠a, Paleontolog√≠a, Antropolog√≠a, Meteorolog√≠a, Geolog√≠a, Enigmas de la Ciencia.
Wikipedia, the free encyclopedia Welcome to Wikipedia, a collaborative project to produce a complete encyclopedia from scratch. We started in January 2001 and already have 38722 articles. We want to make over 100,000 complete articles, so let's get to work!