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Geosciences LibreTexts

5.13: S5 Cranberry Gneiss (Paragneiss)

  • Page ID
    11146
  • Outcrop and Hand Sample Photos and Videos

    Click on the image to enlarge.

    This is a quartz-rich paragneiss. Can you see the foliation in the outcrop?

    Thumbnail for the embedded element "S5 Cranberry gneiss hand sample"

    A YouTube element has been excluded from this version of the text. You can view it online here: pb.libretexts.org/petrology/?p=352

    Thin Section Photos and Videos

    Click on the image to make it larger. 1st = plane polarized light; 2nd = cross-polarized light.

    Spot 1

    Quartz porphyroclast in fine-grained quartz matrix. What type of quartz textures do you see in the following images?

    Spot 2

    Entire thin section scan. 1st = ppl; 2nd = xpl. Click on the image to make it larger.