"Mindat 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. This site is growing every day, with new mineral information, localities and photographs added by members."

www.mindat.org—Extensive information about minerals and their localities. Largest mineralogical database on the web as well as mineral photographs. www.mineralseducationcoalition.org—Abundant information about the uses of minerals and their importance in your everyday life.

Mindat.org is the world's largest open database of minerals, rocks, meteorites and the localities they come from. Mindat.org is run by the not-for-profit Hudson Institute of Mineralogy.

It is crowd-sourced and also expert-reviewed and curated for data quality. The database is used by professional mineralogists, geologists, and amateur mineral collectors alike, and is referenced in many publications.