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Sample Type is Igneous › Volcanic › Ultramafic Extrusive

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IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD023ZS0 Ultramafic Extrusive Small (~3x2x2 cm from cut face) very fine-grained grey sample with very thin cris-crossing white veins. Patchy Fe-Mn crust on sample. Original label: 26 November, 1980. Pacific Ocean 1 Ritter 154, 37 C
GRD02RNS0 Komatiite Komatiite showing diagnostic spinifex texture. Olivine, Cpx, Serpentine, Magnetite. 5 Ritter 154, 3 F
GRD0455S0 Ultramafic Extrusive Perifotitic komatiite flow. Chilled and fractured top of flow. A1 Canada 0 Ritter 154, 29 K
GRD0455S1 Ultramafic Extrusive Peridotitic komatiite flow. Chilled and fractured top of flow. A1 Canada 0 Ritter 154, 29 K
GRD0456S0 Ultramafic Extrusive Fine spinifex zone. A2 Canada 2 Ritter 154, 16 L
GRD0457S0 Ultramafic Extrusive Coarse spinifex zone. A2 Canada 0 Ritter 154, 16 L
GRD0458S0 Ultramafic Extrusive Foliated spinifex zone. B1 Canada 0 Ritter 154, 29 K
GRD0459S0 Ultramafic Extrusive Cumulate zone. B2 Canada 0 Ritter 154, 16 L
GRD0459S1 Ultramafic Extrusive Cumulate zone. B2 Canada 0 Ritter 154, 16 L
GRD045BS0 Ultramafic Extrusive Chilled base of flow . B4 Canada 0 Ritter 154, 29 K
GRD045BS1 Ultramafic Extrusive Chilled base of flow. B4 Canada 0 Ritter 154, 29 K
GRD045CS0 Ultramafic Extrusive Peridotitic komatiite flow(no spinifex zone). Chilled and fractured top of flow. A Canada 0 Ritter 154, 29 K
GRD045CS1 Ultramafic Extrusive Peridotitic komatiite flow(no spinifex zone). Chilled and fractured top of flow. A Canada 0 Ritter 154, 29 K
GRD045ES0 Ultramafic Extrusive Olivine spinifex zone at top of Freds Flow. The actual contact with overlying flows is not exposed. This zone estimated to be about 8 to 10 feet thick in the section sampled. Canada 2 Ritter 154, 29 K
GRD045FS0 Ultramafic Extrusive Pyroxene spinifex zone below olivine spinifex zone. This zone is much thicker than the olivine spinifex zone. Canada 0 Ritter 154, 29 K
GRD045FS1 Ultramafic Extrusive Pyroxene spinifex zone below olivine spinifex zone. This zone is much thicker than the olivine spinifex zone. Canada 0 Ritter 154, 29 K
GRD045GS0 Ultramafic Extrusive Transition pyroxene spinifex, pyroxene more randomly oriented. This represents the lower part of the pyroxene spinifex zone. Canada 0 Ritter 154, 16 L
GRD045GS1 Ultramafic Extrusive Transition pyroxene spinifex, pyroxene more randomly oriented. This represents the lower part of the pyroxene spinifex zone. Canada 0 Ritter 154, 29 K
GRD045KS0 Ultramafic Extrusive Iron-rich tholeiitic flow just below Freds Flow. Variolitic zone near base (?) of flow. Evidence of liquid immiscibility. Canada 0 Ritter 154, 29 K
GRD045LS0 Ultramafic Extrusive Hyaloclastite top of Theos flow. Illustrated in kodachrome slide set. Canada 0 Ritter 154, 29 K
GRD045LS1 Ultramafic Extrusive Hyaloclastite top of Theos flow. Illustrated in kodachrome slide set. Canada 0 Ritter 154, 29 K
GRD045QS0 Ultramafic Extrusive Pyroxenitic komatiite flow above Theos Flow. Possibly 200 to 300 feet above top of Theos Flow. Canada 0 Ritter 154, 29 K
GRD045QS1 Ultramafic Extrusive Pyroxenitic komatiite flow above Theos Flow. Possibly 200 to 300 feet above top of Theos Flow. Canada 0 Ritter 154, 29 K
GRD045RS0 Ultramafic Extrusive Basaltic komatiite flow above 22. Possibly 100 to 150 feet above UMF-22. Bulbous or tubular features on outcrop thought to represent lava tubes. Specimen collected from freshest most massive material from a so-called lava tube. Illustrated in kodachrome slide set. Canada 0 Ritter 154, 29 K
GRD045SS0 Ultramafic Extrusive Central part of iron-rich tholeiitic flow, about 20 feet above variolitic zone. Canada 0 Ritter 154, 29 K
GRD045SS1 Ultramafic Extrusive Central part of iron-rich tholeiitic flow, about 20 feet above variolitic zone. Canada 0 Ritter 154, 29 K
GRD04E2S0 Ultramafic Extrusive olivine, phlogopite-bearing lava South Africa 0 Ritter 154, 16 L