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Rocks: Igneous, Metamorphic and Sedimentary



Rocks hold the history of the earth and the materials that will be used to build its future.
IgneousIgneous Rocks: Photos, descriptions and facts about intrusive and extrusive igneous rocks.
Andesite
Basalt
Dacite
Diorite
Gabbro
Granite
Obsidian
Pegmatite
Peridotite
Pumice
Rhyolite
Scoria
Tuff
UnakiteMetamorphicMetamorphic Rocks: Photos, descriptions and facts about foliated and non-foliated metamorphic rocks.
Amphibolite
Anthracite
Gneiss
Hornfels
Lapis Lazuli
Marble
Mariposite
Novaculite
Phyllite
Quartzite
Schist
Skarn
Slate
SoapstoneSedimentarySedimentary Rocks: Photos and facts about clastic, chemical and organic sedimentary rocks.
Breccia
Caliche
Chalk
Chert
Coal
Conglomerate
Diatomite
Dolomite
Flint
Iron Ore
Limestone
Rock Salt
Sandstone
Shale
Siltstone Fluorescent Minerals
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.Gifts That Rock
Gifts That Rock - What are the most popular gift items in the store?Geodes
Geodes look like ordinary rocks on the outside but can be spectacular inside!Rock and Mineral Kits
Rock, Mineral and Fossil Collections. Specimens for personal or classroom use.Rock Tumblers
Rock Tumblers make great gifts! RockTumbler.com is a GeoShops.com website.Tumbled Stones
Tumbled Stones are rocks that have been rounded, smoothed and polished in a rock tumbler.The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.Lapis Lazuli
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.Quartzite
Quartzite a nonfoliated metamorphic rock composed almost entirely of quartz.Geology Dictionary
Geology Dictionary - contains thousands of geological terms with their definitions.Sliding Rocks
Sliding Rocks on Racetrack Playa How they slide across a dry lake bed is a mystery.Sand Grains
A Grain of Sand Gallery of sand grains through a microscope by Dr. Gary Greenberg.Igneous and Volcanic
Igneous and Volcanic Features an introduction to how these rocks occur below and above ground.Crushed Stone
The Unsung Mineral Hero - and the commodity upon which almost everything is built.Sand
Sand is a diverse material. This gallery includes photos of sand from around the world.Difficult Rocks
Difficult Rocks Elementary students find lots of rocks that you will not be able to identify.Trap Rock
Trap Rock is a name applied to any dark-colored igneous rock used to produce crushed stone.Hardness Picks
Hardness Picks - Test for hardness with precise and easy-to-use hardness picks.Mariposite
Mariposite - a name used for green chromium-rich micas and certain rocks colored by them.Don*t Go To Jail
Rock Collectors must know the rules before removing rocks from public and private property.Shale
Shale The rock that is quickly transforming the energy industry.Rock Art
Rock Art People have been producing rock art for thousands of years. A world-wide collection.Soapstone
Soapstone is a talc-rich rock with properties that make it suitable for a variety of projects.Tucson Show
Mineral Show Photos From the 2010 Tucson Gem, Mineral & Fossil Show.Coquina
Coquina - A porous limestone composed almost entirely of fossil debris.Rock Tumbling
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.Unakite
Unakite is a metamorphosed granite composed of green epidote and pink orthoclase.Siltstone
Siltstone is a sedimentary rock composed mainly of silt-sized particles.Rock-Forming Minerals
Rock-Forming Minerals - most of Earth*s crust is made up of a small number of minerals.Uses of Granite
Uses of Granite The rock used everywhere from the kitchen to the facing stone of skyscrapers.Pictographs
What Are Pictographs? They are drawings or paintings on rocks made by people.Rockfall
Spectacular Yosemite Rockfall A photo sequence of rockfall and debris avalanche by Herb Dunn.Antarctic Meteorites
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.Geology Tools
Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.Gold Panning Kits
Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for gold!Caliche
Caliche is a lithified layer in soil or sediment. It is considered to be a sedimentary rock.Oil Sands
Oil Sands contain oil in the form of bitumen - a major oil resource that can be difficult to produce.Coal Close Up
Coal Through a Microscope Coal is more than a black rock. It's THE most interesting rock.Dacite
Dacite - a light-colored extrusive igneous rock intermediate between rhyolite and andesite.Rocks on Mars
Rocks on Mars Many of the rocks found on Mars are not very different from Earth rocks.Limestone
Limestone A versatile rock used in cement, food, paint, paper, drugs, concrete & more!Forensic Geology
Forensic Geology My students come to class thinking that dirt is dirt and sand is sand…Hand Lens
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.Chalk
Chalk is a variety of limestone formed from fine-grained marine sediment known as ooze.Azurite Granite ?
Azurite Granite? Found at the base of K2, the second highest mountain in the world.