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This webpage of the United States Geological Survey (USGS) and the National Park Service (NPS) highlights general information about rocks and minerals. A description of rock-forming minerals (with photos) illustrates the basic composition of rocks. These minerals include feldspar, mica, quartz, calcite, and others. The three rock types are described (igneous, sedimentary, and metamorphic) in terms of their classification, formation, and composition. There is an identification chart with links to more information.
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No specific technical requirements, just a browser required
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No cost
Information presented on this web site is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested.
DLESE Catalog ID:
DLESE-000-000-002-327
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Related resources:
This resource is referenced by
'USGS Geology in the Parks'
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