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Sample Type is Igneous

1,592 records | Download
IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD02PYS0 Andesite Porphyritic Andesite. Large plagioclase and small amphibole crystals in grey groundmass. Original label: Hypabyssal actually phyre. Vitrophyre. California 2 Ritter 154, 16 B
GRD02PZS0 Basalt Small green sample of a fine-grained dike rock.Plagioclase and Olivine phenocrysts with groundmass containing Epidote(?). Original label Point Sal dike chill margin (on card). California 2 Ritter 154, 29 F
GRD02Q0S0 Gabbronorite Coarsely crystalline with pyroxene and plagioclase California 2 Ritter 154, 29 F
GRD02Q2S0 Granite Large (2 cm) pink orthoclase crystals, quartz, biotite. 0 Ritter 154, 19 B
GRD02Q3S0 Granite California 0 Ritter 154, 15 A
GRD02Q3S1 Granite California 0 Ritter 154, 19 B
GRD02Q4S0 Granite Kspar>Q>plag California 0 Ritter 154, 15 B
GRD02Q4S1 Granite Kspar>Q>plag California 0 Ritter 154, 19 B
GRD02Q4S2 Granite Kspar>Q>plag California 0 Ritter 154, 19 B
GRD02Q4S3 Granite Kspar>Q>plag California 0 Ritter 154, 19 B
GRD02Q5S0 Granodiorite Giant Forest Pluton (Kspar, Q, biotite) California 0 Ritter 154, 15 O
GRD02Q6S0 Granite pink granite with small mafic enclave Seychelles 0 Ritter 154, 15 A
GRD02Q7S0 Granite probably Cathedral Peak granodiorite (granite) California 0 Ritter 154, 19 B
GRD02Q7S1 Granite probably Cathedral Peak granodiorite (granite) California 0 Ritter 154, 15 B
GRD02Q8S0 Granite California 0 Ritter 154, 15 B
GRD02Q9S0 Granite fine-grained granite, Westerly Granite Rhode Island 0 Ritter 154, 19 C
GRD02QAS0 Granite California 1 Ritter 154, 15 B
GRD02QBS0 Granite fresh, possible rutile or sphene California 0 Ritter 154, 19 C
GRD02QCS0 Granite Sherman Granite (Kspar,Q,Plag,Hb,Bi) Wyoming 0 Ritter 154, 15 B
GRD02QCS1 Granite Sherman Granite (Kspar,Q,Plag,Hb,Bi) Wyoming 0 Ritter 154, 19 B
GRD02QCS2 Granite Sherman Granite (Kspar,Q,Plag,Hb,Bi) Wyoming 0 Ritter 154, 19 B
GRD02QCS3 Granite Sherman Granite (Kspar,Q,Plag,Hb,Bi) Wyoming 0 Ritter 154, 19 B
GRD02QCS4 Granite Sherman Granite (Kspar,Q,Plag,Hb,Bi) Wyoming 0 Ritter 154, 19 B
GRD02QDS0 Granite Muscovite biotite granite, fine grained. 0 Ritter 154, 19 C
GRD02QES0 Granite aplitic granite, very fine grained, Boulder County, Colorado. West of Boulder 0 Ritter 154, 15 B
GRD02QHS0 Obsidian Obsidian Salton domes(obsidian butte), Salton Sea California 1 Ritter 154, 15 M
GRD02QIS0 Syenite Possibly potassic shonkinite to syenite series. Seems identical to I-663 California 2 Ritter 154, 15 D
GRD02QJS0 Syenite Possibly potassic shonkinite to syenite series, fine grained California 2 Ritter 154, 15 D
GRD02QKS0 Granite Medium to coarse grained California 1 Ritter 154, 15 B
GRD02QLS0 Ignimbrite Collected 1955. Lithic fragments, pumice, quartz and feldspar phenocryst California 1 Ritter 154, 15 K