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BLUESCHIST #1   (detail)
Glaucophane schist     -   Other specific examples: #1 | #2 | #3 | #4
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Composition
Amphibole -    var. glaucophane
Na plagioclase
Lawsonite - calcium aluminum silicate
     Glaucophane is an azure-blue, lavender-blue or bluish-black mineral; giving the rock its name, and color. Typically the prismatic glaucophane crystals line up resulting in a distinct schistose foliation.
Description
     Lineated schistose foliation produced by the lining up of elongate amphibole (var. glaucophane) crystals; seen trending lower left and upper right in this image.
     The color of this image is closer to that of the true rock than the whole image.
  

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