Geology
- 261
- Sydney Mineral Exploration Discussion Group
- Notices of meetings and events of interest to geoscientists and those involved in mineral exploration. Links to related Australian and international sites
- 262
- The Ventura Gem & Mineral Society, Inc.
- Sponsors of the California Federation of Minerological Societies (CFMS) 1997 Show.
- 263
- Agates of the Oregon Coast
- Full color illustrated guide providing information on agate, jasper, fossils and petrified wood commonly found on the Oregon Coast.
- 264
- Barren Lands
- Describes the 450-year search for a North American diamond mine, and the two men who found it in the 1990s, in the remote Far North.
- 265
- Rockhound Notes
- Monthly newsletter with information and field trip reports about rockhounding in the southwestern USA.
- 266
- Rockhounders.com
- Electronic Prospecting of rocks, minerals, crystals, lapidary, jewelry, and other items Worldwide for Rockhounds and Rockhound Enthusiasts.
- 267
- UK Journal of Mines and Minerals
- British magazine for the collector - mineralogist. Articles for mineral collectors, mine historians, museum curators and topographic mineralogists.
- 268
- Gem and Mineral Exploration Company
- The gold mines and miners of Cripple Creek, Teller County, Colorado, USA.
- 269
- Minerals of Australia and New Zealand
- Information about the minerals and mineral locations in Australia and New Zealand.
- 270
- Oman Virtual Field Trip
- Site designed for an education aid to students, but contains many excellent slides showing the geology of Oman. See dolerite dykes, harzburgite, and channel-fill structures.
- 273
- Sheffield Mine
- A native mine yielding star rubies, sapphires and garnets, for both the serious and the amateur rockhound.
- 275
- A rare glimpse of the cave of crystals
- The BBC reports on Mexico’s Cave of Crystals, containing some of the largest natural selenite structures ever found. (January 19, 2010)
- 276
- A Broader Concept
- Supply crystals, minerals, and fossils from around the world. Also carry geodes, mining tools, tumbled stones, gemstone carvings, amethyst cathedrals and stone crafted gift items.
- 277
- Bedrock Fossils
- Provides ancient fossils and minerals. Offers ammonites, orthoceras, and trilobite specimens either in their natural state or polished.