.Geo/Earth Science URL's

Spiky quartz ball (~3 mm) on stilbite. 
Mill Creek Quarry, Polk county, 
OR. Image frame grabbed from video microscope.

• A. E. Seaman Mineral Museum
• AGMSA
• Alakska Volcano Observatory 
• American Geological Institute
• American Geophysical Union 
• American Petroleum Geologists.
• Amethyst Gallery
• Arizona Rockshop
• Association of American State Geologists
• Becker's Mineral Market
• Betty "Boo" Commean's home page
• Big Ten's Gold Maps
• Bill's Gold Prospecting Page
• Bob Jackson's Geology Adventures
• Bob's Rockshop 
• British Geological Survey's Global Seismology Research Group 
• California Gold Nuggets and High Grade Ore Specimens 
• Canada-Yukon Geoscience Office
• The Canadian Rockhound
• Cascades Volcano Observatory
• Centre for Australian Regolith Studies
• Coast-to-Coast Rare Stones
• Contempo Lapidary
• Cranestone Gems
• Crystallography, The WWW Virtual Library 
• Cyberwall
• Dad's Rockshop
• The Dam Site
• Declassified Intelligence Photographs 
• Delorme Mapping 
• Dig Long and Prosper-Bob Boscarelli Home Page 
• DMS Mining, Rocks & Minerals, Geology and much much more
• DOGAMI Homepage
• Dutch Mineral Society
• Earthquake Info from the U.S.G.S. in Menlo Park, CA
• El Niño
• The Eclectic Lapidary
• Engineering Geology Cases
• Facette Shoppe
• Finch Products
• The Fossil Company Ltd. 
• Fossil News
• French Association of Micromineralogy
• Ganoksin Online
• Gem and Mineral Exploration Company
• Gemological Institute Of America
• GEMMOLOGY WORLD. 
• GemZone
• Gent University (Belgium): Department of Geology and Soil Science
• Geo Exchange 
• Geo Web 
• Geographic Names Database (Gopher) 
• Geosystems
• Geological Society of America 
• Geophysics URL Collection Page 
• Geoscience jobs 
• GIS & GEOSTATISTICS homepage 
• GIS & Mapping topics 
• Global Land Information System 
• GPS Overview 
• Grand Canyon Natl. Park 
• Great Outdoor rec pages 
• Guy's vidio microscope
• Hawaii Volcano Observatory
• Hubble images 
• Illinois State Geological Survey 
• Info-Mine 
• Intera Mineral Science List 
• International Geothermal Association 
• International Treasure Hunters Exchange
• Iowa Department of Natural Resources 
• Kelrocks
• Ken's Fluorescent Minerals
• Ken Wetz's home page (rockhound directory)
• Knoxville Gem and Mineral Society
• LR Ream Publishing 
• Landsat images
• Le Regne Mineral
• Links for Mineralogists
• Links for Palaobotanists
• Lortone
• Maine Geological Survey
• Marcelo Behar's South American Minerals
• Maryland Geological Survey 
• Matrix Minerals
• Michael Sternberg's Home Page
• MineNet 
• Minerals and Geotechnical Logging Society 
• Mineral chemistry 
• Mineral Collectors Page 
• Mineral Market
• MINERAL VIDEO WEB PAGE
• The Mineralogical Record
• The Mineralogical Society of Southern California 
• Mineralogische Kring Antwerpen
• Montreal Gem and Mineral Club
• Mountain Lilys Gems
• Myrddin Emrys Limited
• NASA 
• National Gemstone 
• National Geodetic Survey 
• NOAA 
• The Norwegian Rock & Mineral Guide
• The Norwegian Rockhound
• Olivet Nazarene U. Geology Dept. 
• Online Resources for Earth Scientists 
• Oregon Museum of Science and Industry
• Oregon State Geology & Mineral Industries, Department of
• OsoSoft Mineral Connection
• Pacific Marine Geology
• Palo URL
• Peerless Minerals 
• Paris's School of Mines (Ecole des Mines de Paris) 
• The Planetary Society 
• Plant Fossils of West Virginia 
• Redwood City Public Seismic Network
• Rock & Mineral Associations of Canada
• Rockhounds Database 
• Rockhounds Information Page 
• RockMan
• Rocky Mountain Association of Geologists
• Royal Tyrrell Museum 
• Russian Minerals 
• Skarns and Skarn Deposits 
• Scott's Earth Science Site of the Week 
• SeismoSurfing Home Page 
• Searchers Gem and Mineral Society
• Sir Thomas Explorations
• Smithsonian Index 
• Society of Exploration Geophysicists
• Southern Arizona Seismological Observatory 
• The Soft Earth
• Society of Earth Science Students 
• Space Telescope Science Institute 
• Summit Minerals
• Terry Ensell & Julene Kanies (Rockstock)
• Tim Fisher's Home Page 
• Trinity Mineral Company
• Topaz Mountain
• Topo Maps 
• TreasureNet 
• UC Minerals
• University of Minho 
• USA Mineral Club listings
• USGS 
• USGS mapping Home Page
• USGS Mapping Information: GNIS Data Base Query Form
• Virtual Caverns 
• The Virtual Earth 
• The Virtual Quarry
• Waternet
• The Websurfer's Weekly Earth Science Review
• West Suburban Lapidary Club of Elmhurst, Illinois
• Zachary's Paleontological Web Server

Calcite twin ( ~5 mm) on orange stilbite.
Mill Creek Quarry, Polk county,
OR. Image frame grabbed from video microscope.

Quartz scepter fans ( ~1.5 mm) on orange stilbite with black saponite 
(not clinochlore as prevously reported). Mill Creek Quarry, Polk county, 
OR. Image frame grabbed from video microscope.