At the bottom of lakes such as (A) Waterton Lake in Canada fine-grained sediment collects. This sediment may someday become solid rock like that shown in (B) with tiny horizontal layers called laminations.
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(A) Marcus Milling, American Geological Institute, and (B) Martin Miller, University of Oregon. Both images courtesy of Earth Science World Imagebank
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TES XXVI, 3 fall 2010
The Fall 2010 issue of The Earth Scientist
, focuses on rocks and minerals, including articles on minerals and mining, the use of minerals in society, and rare earth minerals, and includes 3 posters!
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This is a feldspar mineral! Look for it in igneous rocks where it looks like white or pink crystals. You might find it in other types of rocks as well. ...more
The mineral that is green is called olivine! Look for it in igneous and metamorphic rocks. In this picture, olivine is filling a hole in the igneous rock. ...more
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Minerals are the building blocks of rocks. There are many different types of minerals. All of them are solid and all are made of atoms of elements. Minerals can grow even though they are not alive. Most...more