gneiss

gneiss

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gneiss

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Image credit: James St. John

gneiss in classification

important observable properties - properties in classification table below

  • coarse-grained crystals
  • distinct alternating bands of lighter (felsic) and darker (mafic) minerals; may be straighter or wavier

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Resources: gneiss

Image Galleries

  • Flickr Image gallery, James St. John: gneiss
  • Mindat.org image gallery: gneiss
  • Google images: gneiss

Other Resources