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Washington School Collection


This standard collection for classroom use has been updated to match advances in present text book materials.

Study units are present under these headings: rock-forming minerals, ore-forming minerals, industrial minerals, and igneous, sedimentary and metamorphic rocks.

Contains 40 natural specimens, each approximately 2" x 11/2" which are number coded in a compartmented container. A study guide to rocks and minerals is also included.

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