Geology
- 221
- Meteorite Pictures
- Provides meteorite photographs designed to be a resource for scientists, collectors and enthusiasts, grouped into galleries based upon their classification.
- 222
- Meteorite Preservation and Repair
- Complete, concise instructions for preserving meteorites in collections.
- 223
- Meteorite.fr - All about Meteorites
- Topics include origins and classification of meteorites, historical impacts, and news about recent finds and the specimens market.
- 224
- Meteorites Australia
- List of meteorites found in the country, with many photos. Includes glossary of terms, information on meteorite identification and classification, and details of specimens for sale.
- 225
- New England Meteoritical Services
- Provides general background information on meteorites for students, educators and collectors.
- 226
- Niger Meteorite Recon
- Illustrated reports, photo gallery from meteorite expeditions undertaken in the Sahara desert of North Africa.
- 227
- Oscar E. Monnig Meteorite Gallery
- Primer on meteorites, photos of the museum collection situated on the campus of Texas Christian University in Forth Worth, Texas, and visitor information.
- 228
- Smithsonian Institution Division of Meteorites
- Information about the types and identification of meteorites, with recommended books on the topic.
- 229
- French Association of Micromineralogy
- Information, images and references related to micro minerals and French mineral localities and a directory of worldwide collectors.
- 231
- Lithos and Minerals
- Image libraries and some information on zeolites (mostly from India) and their associated minerals.
- 232
- MineralTown.com
- Educational articles, reports about collecting locales, images, and other resources for collectors of minerals and fossils.
- 233
- Natural Zeolites: History, Morphology and Occurrence
- Volker Betzon provides information and photographs of natural zeolites, references on zeolite locations and offers exchange with other collectors.
- 235
- The Mineral and Gemstone Kingdom
- An interactive reference guide to rocks, minerals, and gemstones.
- 236
- Zircon: The Key Mineral
- Information on the properties, occurrences, and some specific research of the mineral Zircon.
- 237
- Scottish Agates
- Information and photographs of agates from a number of localities provided by David G. Anderson.