Nature Pages
Rocks & Minerals

Visitor Number Hit Counter since January 18, 2009

(Note: All Visitor Counters were reset in January 2009.)


Rocks fall into three categories: Metamorphic, Sedimentary and Igneous. Minerals fall into four basic groups: Gem Minerals, Non-Metallic Minerals, Metallic Minerals and Rock-forming Minerals. I will give an brief summary about each and post photos from my collection of some of the categories.


Rocks

Metamorphic rocks have been altered by heat, pressure or chemical action. Examples of Metamorphic rocks are

Sedimentary rocks are formed by action of water, wind or organic agents. Examples of Sedimentary rocks are

Igneous rocks are formed at high temperatures or from molten materials. Examples of Igenous rocks are



Minerals

Gem Minerals include transparent gems, quartz gems, opaque gems and synthetic gems.

Non-Metallic Minerals include sulfur, grpahite, calcite, dolomite, aragonite, typsum, halite, borax, fluorite, barite, apatite, talc, asbestos, quartz and opal.

Metallic Minerals include copper, lead, gold, silver, mercury, iron ores, nickel, cobalt, tin, zinc, aluminum, chromium, manganese, uranium, titanium, magnesium, stibnite and arsenic.

Rock-forming Minerals include mica, feldspars, amphiboles, pyroxenes, zeolites, garnets, olivine, serpentine and staurolite.



Recommended Books:

Simon & Schuster's Guide to Rocks & Minerals
Webpages designed by:
Copyright  ©  2003 Kay Price