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Golden Pocket Guides Geology


Golden Pocket Guides Geology

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GB-80000061
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0.40 lbs
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$6.95
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$5.21 (Save 25%)

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Enjoy and Learn!
Expert Knowledge!
Easy-to-read!

This informatice guide covers the five billiion years of history that have given the earth its present form, including:

  • The Earth's relation to the rest of the Universe
  • The rocks and minerals of which it is made
  • The effects of glaciers, gravity, volcanoes, and other forces

Illustrated in full color, this guide is valuable for everyone interested in our planet, the ultimate basis of our present society.

A Classic Guide .... for All Ages.

Our review:''We highly recommends this little guide. It provides a consice overview of geology, rocks and minerals. Great illustrations to help you understand the concepts. This is great reference, carry it in the field.''

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    The definitive guide to rocks and minerals, completely updated for the fifth edition, includes 385 color photographs showing rocks, minerals, and geologic formations. Hundreds of minerals are described, with details such as geographic formations. Hundreds of minerals are described, with details such as geographic distribution, physical properties, chemical composition, and crystalline structures.
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  • How to Tumble Polish Rocks Into Gems, Third Edition

    Tumbling made plain and simple tells you IN PLAIN LANGUAGE...How to load your machine, select the correct abrasives, compounds, tumbling speeds and intensities. How to use carriers, medias, fillers, additive thickeners, suspension agents, pre-polishing agents. burnishing ...and the list goes on and on. Before you learn to fly...better learn how to ride. So lets start at the beginning...and if you are already an expert..then you can skip this part of the book.

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    Third Edition, Thirteenth Printing, October 2013. (Third Edition dated 2005, and revised in 2006)

    First Printing, January 1995
    Second (Revised) Printing, Second Edition, January 1996
    Third Printing, Second Edition, April 1997
    Fourth Printing, Second Edition, October 1998
    Fifth Printing, Second Edition, March 2000
    Sixth Printing, Second Edition, June 2001
    Seventh Printing, Second Edition, September 2002
    Eighth Printing, Second Edition, March 2003
    Ninth Printing, Second Edition, July 2004
    Tenth (Revised) Printing, Third Edition, August 2005
    Eleventh (Revised) Printing, Third Edition, August 200
    Twelfth Printing, Third Edition, July 2007
    Thirteenth Printing, Third Edition, October 2013
    Printing,
    Printing,
    Printing,
    Printing,
    Printing,
    Printing,
    GB-80000141
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    Hardness is one property of a mineral that can be used to distinguish among similar minerals. A given mineral can scratch any other mineral of the same or softer hardness. Over a hundred years ago, the German mineralogist Frederick Mohs devised the relative hardness scale that has found favor with mineralogists for over a century. Others, such as Rosiwal, formed absolute hardness scales using the same minerals as Mohs. For example, diamond, the hardest substance in Nature is not twice as hard as apatite, 10 versus 5, but over twenty thousand times as hard, 140,000 versus 6.5.

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  • Deluxe Moh's Mineral Hardness Pick Set

    The Deluxe Moh's Hardness Pick Set now comes in two case types. The wooden case is small enough to carry and the top screws into the base to make a perfect desk stand. The plastic case is longer but the thinner size makes it easier to carry in your field tool set.

    Hardness is an important and quantifiable physical characteristic of a mineral and in your effort to identify an unknown mineral, the hardness, if known, combined with other properties, can narrow your search to just a handful of possibilities. Simply scratch a smooth surface of your unknown mineral with the picks of various indicated hardness. As an example, if a No. 5 pick scratches the mineral, but a No. 4 pick does not, then your mineral hardness is 4.5. Then compare this against a table of minerals listing hardness values to aid in identifying the unknown mineral.
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    • High quality brass pinch vises.

    • A glass plate (hardness of about 5.5) which, when scratched,
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    • A second hardness plate with a hardness value of 3.5.

    • A streak plate for testing a mineral’s streak color.

    • A magnet to test magnetic rocks such as magnetite and pyrrhotite.

    • A 100 grit polishing stone to keep the points sharp.

    • An attractive, mahogany-finished and compact wooden case.

    • Complete usage instructions.


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    HW-21000001
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