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The rocks brought back to Earth from the moon fall into four categories: mare basalts, impact breccias, pristine highland rocks and regolith. Basalts are igneous rocks formed by co...

The three main types of rocks are igneous, metamorphic, and sedimentary.

List of rock types


Names of non-rock types and archaic rock types are given as appendices. ... 1 Igneous; 2 Sedimentary; 3 Metamorphic; 4 Specific varieties of rocks; 5 See also  ...

Interactives . The Rock Cycle . Types of Rocks


Types of Rocks. Rocks are not all the same! The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and the differences among ...

Answer: There are many grades of live rock to choose from, but for the most part aquarists look for rock that allows for maximum marine life and coralline algae growth. Keep in mind that live rock is normally sold by weight, so the more porous the rock is, the more roc... More »
By Stan & Debbie Hauter, About.com Guide

Rocks: Pictures of Igneous, Metamorphic and Sedimentary Rocks


Photographs and information for a large collection of igneous, metamorphic and sedimentary rocks. Geology.com.

The 3 basic rock types


Just as any person can be put into one of two main categories of human being, all rocks can be put into one of three fundamentally different types of rocks.

Types of Rocks - Kids Love Rocks


To help you identify the types of rocks in your collection, let's look at the characteristics that make up the three types. First, we will look at igneous rocks.

Types of Rocks: The Three Major Rock Groups - Video & Lesson ...


Furthermore, did you know that rocks exist in three general forms: igneous, sedimentary and metamorphic? This lesson describes these rock types and ...

Identifying Rocks and Minerals/Types of Rocks - Wikibooks, open ...


There are three different types of rocks: Igneous, Sedimentary, and Metamorphic. The difference between each type is in how they are formed.

Popular Q&A
Q: What kind of rock is gniss?
A: Is it a igneous , marble , metamorphic , or sedimentary Read More »
Source: wiki.answers.com
Q: What kind of rock is a gallium?
A: Gallium is not found as a rock, it is a metallic element which is found as a trace element in coal, bauxite, and some other rock minerals. In its pure form gall... Read More »
Source: wiki.answers.com
Q: What kind of rock is a geode?
A: Geodes appear in sedimentary rocks but are made of clay and limestone with an out Read More »
Source: www.chacha.com
Q: What kind of rock is apocalyptica?
A: According to their myspace page the band Apocalyptica is Rock / Metal / Classical Read More »
Source: www.chacha.com
Q: What kind of rock is this?
A: 3 is a petoskey stone, do not know the rest. Source(s) Living in michigan with all the petoskey stones. Read More »
Source: answers.yahoo.com