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Petrography: Minerals in Thinsection (title provided or enhanced by cataloger)
This web site includes almost 200 photomicrographs of rocks and minerals. All photographs are of thin sections ground to .03 mm thickness, in transmitted white light. Some show the appearance of minerals in plane polarized light, but most were taken with crossed polarizers on a petrographic microscope, better to illustrate mineral properties and rock textures. The majority of the pictures show a field of view 1.5 mm long (about 80X magnificaiton); other magnifications are indicated where different.
Intended for grade levels:
  • College (13-14)
  • College (15-16)
Type of resource:
  • For the classroom:
    • Tutorial
  • Visual:
    • Photograph
  • Geological Sciences:
    • Mineralogy or petrology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright and Other Restrictions Information is Unknown
DLESE Catalog ID: DLESE-000-000-000-635
Resource contact / Creator / Publisher:
Author: John Longshore
Humboldt State University, Geology Dept.