Winnipeg GYPSUM

Red River Floodway, Winnipeg, Manitoba, Canada

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  • Winnipeg GYPSUM

    #65796

    Two large (up to 3 cm) and two medium-sized twinned blades of gemmy pale yellow gypsum, on a sphere of compact gypsum crystals; no matrix (see "Collection History"); some damage. Maximum dimension: 9.8 cm


    SOLD

      
  • Winnipeg GYPSUM

    #59164

    Two spherical clusters of translucent to transparent gypsum crystals, with a large twinned blade (4 cm wide) of gemmy pale yellow gypsum; no matrix; some damage. Maximum dimension 6.6 cm.

    SOLD

      
  • Winnipeg GYPSUM

    #59631

    A cluster of interpenetrating crystals (some doubly-terminated) of transparent, lustrous pale yellow gypsum. Minor damage. From the private collection of Rod and Helen Tyson. 4.0 cm x 5.2 cm x 3.4 cm

    $50 CDN

      
  • Winnipeg GYPSUM

    #59148

    Sunburst of golden gypsum; some peripheral damage.
    7.6 cm x 6.8 cm x 4.5 cm

    SOLD

      
  • Winnipeg GYPSUM

    #59637

    Large twinned blades of gypsum on a central sphere of closely packed gypsum crystals.
    9.8 cm x6.8 cm x 5.4 cm

    SOLD

      


All the Red River Floodway gypsums fluoresce and phosphoresce. They grow in the clays beside the Red River and so are free-floating (although--especially in the upper layers---they may be joined together). All grow from central nuclei (sand or organic material) but the final shape varies with depth. In the upper levels there are flattened plates ("sunbursts"). At deeper levels, there are spectacular “sputniks,” with large, twinned blades. The deepest layers produce clear, spherical clusters with chunky crystals and fewer twins.