Links:
Amethyst Galleries' Mineral Gallery
Database of Raman spectroscopy, X-ray diffraction and chemistry of minerals
Geologic Hazards--Landslides (USGS)
Guy Masters, Gabi Laske, Mantle Models
Mineralogy Database - Mineral Locations, Photos and Information
PNSN - Pacific Northwest Seismograph Network
The Global Earthquake Response Center -- a WebMagic site
The mineral and gemstone kingdom
UC BERKELEY Active Tectonics InSAR
USDOC- NOAA- NESDIS- National Geophysical Data Center (NGDC) Home Page