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Sample Type is Igneous

1,592 records | Download
IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD02ROS0 Rhyolite Aphanitic texture. Mexico 2 Ritter 154, 3 E
GRD02RPS0 Basalt Pyroxene and Feldspar bearing Basalt. Vesicles remnant from approx 2-3 mm gas bubbles Washington 3 Ritter 154, 3 E
GRD02RQS0 Basalt Two billets. Visible feldspars. 2 Ritter 154, 3 E
GRD02RRS0 Basalt Xenolith in basalt. Two thin sections-1801-2, 1801-5. Hawaii 2 Ritter 154, 3 E
GRD02RSS0 Diorite One 1cm thick slab. Coarse grained, weathered, Plagioclase, Quartz, Hornblende, Biotite, trace K-spar apatite and sphene, minor chlorite Point Reyes CA, from N end of point, from the Salinian block. 4 Ritter 154, 3 E
GRD02RTS0 Mafic Extrusive Plagioclase and pyroxene bearing Oregon 3 Ritter 154, 3 E
GRD02RUS0 Monzonite Two hand samples and two billets California 3 Ritter 154, 3 E
GRD02RVS0 Dacite Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered Dacite Porphyry, Morro Bay, San Luis Obispo 3 Ritter 154, 3 E
GRD02RVS1 Dacite Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered California 3 Ritter 154, 15 Q
GRD02RWS0 Basalt Vesicular (~2-3 cm) Pahoehoe Basalt. One broken thin section Hawaii 1 Ritter 154, 3 E
GRD02RXS0 Gabbronorite Fine grained massive Gabbronorite. Plagioclase, Hornblende, Pyroxene. 2 Ritter 154, 3 E
GRD02RYS0 Diorite Medium grained, Quartz, Plag, Hornblende, Biotite. 0 Ritter 154, 3 E
GRD02RZS0 Granodiorite Washington 3 Ritter 154, 3 E
GRD02S0S0 Picrite Olivine bearing basalt, large olivine phenocrysts (1-10 mm) Hawaii 0 Ritter 154, 3 E
GRD02S2S0 Gabbro Washington 0 Ritter 154, 3 C
GRD02S5S0 Peridotite Weathered serpentinized peridotite with half inch weathered brown crust with reaction rim visible. Secondary serpentinization. California 0 Ritter 154, 16 K
GRD02SCS0 Ultramafic Intrusive Montana 0 Ritter 154, 16 L
GRD02SDS0 Granite Likely part of cumulate series from near Champlain mountain. Subhedral Kspar, Q and hornblende. Maine 0 Ritter 154, 19 C
GRD02SFS0 Intermediate Intrusive 20-5-% plag, under 15% Hb, under 5% cpx. La Sal Loop Rd. In northern La Sal mountains E of Moab. 0 Ritter 154, 19 K
GRD02SGS0 Intermediate Intrusive 20-5-% plag, under 15% Hb, under 5% cpx. La Sal Loop Rd. In northern La Sal mountains E of Moab. 0 Ritter 154, 14 L
GRD02SNS0 Ignimbrite Volcanic Tuff. Miocene at 2100 ft in Hueneme Well. California 1 Ritter 154, 17 N
GRD02SZS0 Gabbro Coarse plagioclase and Hornblende, bands of coarse, medium, fine grain sizes. California 0 Ritter 154, 16 D
GRD02T0S0 Norite Los Pinos Pluton. Coarse plagioclase, pyroxene (opx and cpx) and olivine altered to iddingsite. California 0 Ritter 154, 16 E
GRD02T0S1 Norite Los Pinos Pluton. Coarse plagioclase, pyroxene (opx and cpx) and olivine altered to iddingsite. California 0 Ritter 154, 16 R
GRD02T1S0 Gabbronorite Los Pinos Pluton. Coarse (>1cm) plagioclase, pyroxene and olivine. Olivine has altered to iddingsite. Coarse section intruded by fine sub-mm scale crystals. Need thin section. California 0 Ritter 154, 16 E
GRD02T3S0 Gabbro Trinity ophiolite. Need thin section, appears to be plagioclase with pyroxene replaced by hornblende. Float. California 0 Ritter 154, 16 D
GRD02T4S0 Foid-Bearing Extrusive Anorthoclase Phonolite. Anorthoclase phenocrysts, Cpx, Olivine(?). Ejecta from 1972-1992 eruption. Antarctica 0 Ritter 154, 15 I
GRD02T5S0 Gabbro Ulvo Gabbro. Plag, Cpx, Olivine, Fe-Ti Oxides(Magnetite, Ulvospinel, Ilmenite). Well developed lineation. Likely from RZb(Rythmically Layered Zone b) portion of complex. Sweden 0 Ritter 154, 16 D
GRD02T6S0 Gabbro Ulvo Gabbro. Plag, Cpx, Olivine, Fe-Ti Oxides(Magnetite, Ulvospinel, Ilmenite). High weight percentage of Oxides. Likely from UZ(Upper Zone) of complex. Sweden 0 Ritter 154, 16 R
GRD02T9S0 Obsidian Obsidian California 0 Ritter 154, 15 M