|Owner||The Hudson Institute of Mineralogy, Keswick, Virginia|
|Created by||Jolyon Ralph, et al.|
|Launched||10 October 2000|
Mindat.org is a non-commercial online database, claiming to be the largest mineral database and mineralogical reference website on the Internet. It is used by professional mineralogists, geologists, and amateur mineral collectors alike.
The website contains a significant catalogue of mineral entries, localities, and photographs. Registered editors may add and revise information on the regularly updating database.
As of 2016[update], it included:
Mindat was started in 1993 as a personal database project by Jolyon Ralph. He then developed further versions as a Microsoft Windows application before launching a community-editable database web site in October 2000.
Mindat.org is now part of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit educational foundation incorporated in the state of New York.
Jolyon Ralph was awarded the Mineralogical Society of America's Distinguished public service medal in 2011 for his work on Mindat.org.