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Abstract

In our last article we discussed one of the common minerals found on the earth's surface. In this article the writer will attempt two things: first, to describe a few of the common rock-making minerals; and second, to discuss some of the simple ways of distinguishing the common igneous rock found on the earth's surface. The commonest igneous rock-making minerals, besides quartz, are the feldspars, the irons, pyroxene, hornblende, and the micas.

Publication Date

December 1931

Journal Title

Science Bulletin

Volume

4

Issue

4

First Page

5

Last Page

7

Copyright

©1931 by Iowa State Teachers College

Language

en

File Format

application/pdf

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