Below are links to some of the better sites lurking on the World Wide Web that have hard-rock geology content. If you wish to submit your own useful links please use the contact form here.

Website Name	URL
Hard Rock Zone Facebook Page	https://www.facebook.com/hardrockzone
British Geological Survey	http://www.bgs.ac.uk/
Volcanic and Magmatic Studies Group (VMSG)	http://www.vmsg.org.uk/
VMSG Facebook Group	http://www.facebook.com/groups/272728666984/
The Mineralogical Society	http://www.minersoc.org/
The Geological Society	http://www.geolsoc.org.uk
British Antarctic Survey	http://www.antarctica.ac.uk/
MantlePlumes.org	http://www.mantleplumes.org/
Geokem	http://www.geokem.com/
Georoc	http://georoc.mpch-mainz.gwdg.de/georoc/
The Volcanism Blog	http://volcanism.wordpress.com/
US Geological Survey	http://www.usgs.gov/
Global Volcanism Project	http://www.volcano.si.edu/index.cfm
DougalEARTH	http://www.dougalearth.com
Metamorphic Studies Group	http://msg.gly.bris.ac.uk/
Tools for Petrologists	http://www.kaylaiacovino.com/tools-for-petrologists/
VOLCANOFILES	http://volcanofiles.com/
Volcano World	http://volcano.oregonstate.edu/