The Minerals Education Coalition is a coalition of organisations that have compiled a huge range of resources about minerals and mining. There are loads of resources for K12 teaching and a great search engine to find about minerals, where they come from and what they are used for.
American Museum of Natural History (NYC) Virtual Tour
Read and watch videos about all of the exhibits in New York’s American Museum of Natural History. All of the permanent exhibits have extensive information about what is on display, and it is easy to spend hours caught up investigating.