Rocks: Pictures of Igneous, Metamorphic and Sedimentary Rocks
Home » Rocks. Rocks: Igneous, Metamorphic and Sedimentary Rocks hold the history of the earth and the materials that will be used to build its future.
Sedimentary Rocks | Pictures, Characteristics, Textures, Types
Organic sedimentary rocks form from the accumulation of plant or animal debris. Examples include: chalk, coal, diatomite, some dolomites, and some limestones. Photos and brief …
Igneous Rocks | Pictures of Intrusive and Extrusive Rock Types
Extrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass. These rocks include: andesite, …
Granite: Igneous Rock - Pictures, Definition & More - Geology.com
Granite is a coarse-grained, light-colored igneous rock composed mainly of feldspars and quartz; it also contains minor amounts of mica and amphibole minerals (see the accompanying chart …
Gemstones: Facts, photos, and information for over 100 gems.
Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Meteorite Identification: Have you found a space rock?
Identification of a genuine meteorite takes a practiced eye, but there are a number of simple tests that can help hopeful rock hounds determine if they have stumbled across a rare space rock, …
Mineral Properties, Photos, Uses and Descriptions - Geology.com
Photos and information about 80 common rock-forming, ore and gemstone minerals from around the world.
Tumbled Stones: What are tumbled stones? How are they made?
Tumbled stones are pieces of rocks and minerals that have been rounded, smoothed and polished into beautiful gemstones in a rock tumbler.
The Most Difficult Rocks to Identify | Teaching Rock Identification
Rocks: Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. Minerals: Information about ore minerals, gem materials and rock-forming minerals. …
The "Acid Test" for Carbonate Minerals and Carbonate Rocks
For these rocks the acid test might not be enough for a confident identification - but at least you will know that the rock has a significant carbonate mineral content. Marble is a limestone or a …