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Sample Type is Igneous › Volcanic › Intermediate Extrusive

133 records | Download
IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD000HS0 Andesite Amygduloidal basaltic andesite California 0 Camp Elliott
GRD000US0 Dacite fairly altered California 1 Ritter 154, 15 Q
GRD000VS0 Andesite Porphyritic. White sanidine in dark grey matrix. California 1 Ritter 154, 16 A
GRD000WS0 Dacite California 1 Ritter 154, 15 Q
GRD0012S0 Andesite Plagioclase and hornblende in glassy matrix California 1 Ritter 154, 16 B
GRD0013S0 Andesite California 1 Ritter 154, 16 A
GRD0040S0 Andesite Vesicular Tristan da Cunha: Stony Beach Cinder Cone, elev. 0 (penultimate flow) 0 Ritter 154, 19 H
GRD0041S0 Andesite Tristan da Cunha: 1961 eruption, seaward edge of flow, elev 10. 100 yards from extreme W. of flow 0 Ritter 154, 16 A
GRD0042S0 Andesite Tristan da Cunha: 1961 eruption, seaward edge of flow, elev 10, from outer part of flow 0 Ritter 154, 19 H
GRD004VS0 Andesite Old Somma Lava, 52-53% SiO-2, basic plag Japan 0 Ritter 154, 16 A
GRD004WS0 Andesite Minamikako lava of Yotei (63.4% SiO2) Japan 0 Camp Elliott
GRD004XS0 Dacite Hakodate Summit Hokkaido Japan 0 Ritter 154, 15 Q
GRD004YS0 Andesite Japan 0 Ritter 154, 16 A
GRD004ZS0 Andesite Old Somma Lava Japan 0 Ritter 154, 16 A
GRD0057S0 Andesite Au-Hy dacitic andesite, aphyric. Young Somma lava, 67% SiO2 Japan 0 Ritter 154, 19 H
GRD0058S0 Andesite Hy-Pig, old Somma lava Japan 0 Ritter 154, 16 A
GRD0059S0 Andesite Pigeonite-andesite dike Japan 0 Ritter 154, 16 A
GRD005AS0 Andesite andesite of nuee ardente block, Kami-yama Japan 0 Ritter 154, 16 A
GRD005BS0 Andesite Old Somma rim, south end of the lake. Au-Hy-Pig Japan 0 Ritter 154, 19 H
GRD005CS0 Dacite Pyroxene dacite from avalanche deposit Japan 0 Ritter 154, 15 Q
GRD005DS0 Andesite Au-Hy, from central cone, some samples contain remelted Na plag and crystobalite Japan 0 Ritter 154, 16 A
GRD005GS0 Andesite aphryic lava, old Somma lavas Japan 0 Ritter 154, 19 H
GRD005HS0 Andesite pyroxene (pig?) andesite; old Somma lavas Japan 0 Ritter 154, 16 A
GRD005IS0 Andesite pyroxene (pig?) andesite; old Somomo lavas, Hakone volcano Japan 0 Ritter 154, 16 A
GRD005JS0 Andesite (pig?) Japan 0 Ritter 154, 19 H
GRD005KS0 Andesite 1783 Agatsama flow; Japanese volcanic suite, Asama Volcano Japan 0
GRD005LS0 Andesite 1783 Oni-oahidashi flow, porous andesite vitrophyre Japan 0 Ritter 154, 16 A
GRD005MS0 Andesite Kambara Nuee Ardente pyroclastic flow. Vesicular interior of bread crust block Japan 0 Ritter 154, 19 L
GRD005NS0 Andesite Japan 0 Ritter 154, 19 H
GRD006DS0 Dacite Dacite (Hb-Q), nice euhedral amphibole, multiple pieces (13 in total) 0 Ritter 154, 15 Q