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Sample Type is Igneous › Plutonic › Mafic Intrusive

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IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD02B3S0 Anorthosite Medium-grained. Labradorite-green feldspar-amphibole-pyrite (trace). 1 Ritter 154, 16 F
GRD02B4S0 Anorthosite Coarse-grained. Labradorite with interstitial green pyroxene and trace pyrite. 1 Ritter 154, 16 F
GRD02B8S0 Anorthosite Large blue labradorite crystals in green feldspar matrix. Large amphibole inclusion with more coarse-grained rim and interior. A minor amount of dark green pyroxene. 1 Ritter 154, 16 F
GRD02BOS0 Anorthosite Light grey-blue, euhedral plagioclase phenocrysts with interstitial pyroxene and magnetite (minor). Original label: Anorthosite. California 0 Ritter 154, 16 F
GRD02E8S0 Gabbro Medium-grained gabbro. Carbonate veins. Billet. Probably from Ligurian ophiolite. Italy 1 Ritter 154, 16 D
GRD02J4S0 Norite norite (felsic norite; plag, hypersthene, augit, biotite, interstitial granophyre, Q, minor pyrite, apatite, ilmenite) Canada 0 Ritter 154, 15 I
GRD02J4S1 Norite norite (felsic norite; plag, hypersthene, augit, biotite, interstitial granophyre, Q, minor pyrite, apatite, ilmenite) Canada 0 Ritter 154, 16 E
GRD02J4S2 Norite norite (felsic norite; plag, hypersthene, augit, biotite, interstitial granophyre, Q, minor pyrite, apatite, ilmenite) Canada 0 Ritter 154, 16 E
GRD02J5S0 Gabbro gabbro (Q gabbro: plag, CPX, amphibole and intercumulus micrographic intergrowth and Q) Canada 0 Ritter 154, 16 D
GRD02NHS0 Gabbro Fine-grained green gabbro. Carbonate crust and veins in sample. California 1 Camp Elliott
GRD02NJS0 Gabbro Fine-grained green gabbro. Carbonate spots and veins in sample. California 0 Camp Elliott
GRD02NKS0 Gabbro Coarse-grained green gabbro. Pyroxene. Nice hand sample. California 1 Ritter 154, 16 C
GRD02NMS0 Gabbro Sample of coarse-grained green gabbro. California 0 Camp Elliott
GRD02NOS0 Gabbro Small sample of coarse-grained gabbro. Fair amount of metallic oxides. California 0 Camp Elliott
GRD02NPS0 Gabbro Two small samples of coarse-grained gabbro. One sample could be made into a billet. California 0 Camp Elliott
GRD02NQS0 Anorthosite Anorthosite. 95% orthoclase. Trace oxides. California 0 Ritter 154, 20 D
GRD02NRS0 Gabbro Small sample of medium grained gabbro. 50% orthoclase - 50% amphibole. California 0 Camp Elliott
GRD02NSS0 Gabbro Small sample of coarse grained gabbro. 50% orthoclase - 50% amphibole. California 0 Ritter 154, 16 D
GRD02NWS0 Gabbro Plagioclase-rich gabbro with Fe-stained crust on sample. Original label: Gabbro. Plagioclase (An55), Hypersthene (many with pyroxene overgrowths), opaques form a lattice-like pattern. A few apatite crystals. Numerous complex twins amo(?)-orthopyroxene-clinopyroxene-olivine-hornblende-spinel. California 4 Ritter 154, 3 E
GRD02OKS0 Gabbro Large sample of hornblende gabbro. Original label: From blasted outcrop in road. California 2 Ritter 154, 16 D
GRD02OLS0 Gabbro Two samples of anorthositic gabbro. Exsolution of pyroxenes in thin section. California 3 Ritter 154, 16 F
GRD02PCS0 Gabbro Coarse-grained gabbro. Billets. Original label: Ophiolite. Typical gabbro. California 2 Ritter 154, 29 F
GRD02PDS0 Gabbro Dark green fine-grained diorite (?) Billets. Original label: Ophiolite. Quartz diorite? Dike cutting Calif 1103. California 2 Ritter 154, 29 F
GRD02PKS0 Anorthosite Two samples of anorthosite. Large plagioclase feldspar with interstital green pyroxene. Large bleb of magnetite in larger sample. Original label: San Gabriels Field Trip. California 2 Ritter 154, 16 F
GRD02PLS0 Anorthosite Large plagioclase feldspar with trace interstital green pyroxene, pyrite, and magnetite. Original label: San Gabriels Field Trip. California 2 Ritter 154, 16 F
GRD02PMS0 Anorthosite Large plagioclase feldspar with trace interstital green pyroxene, pyrite, and magnetite. Original label: San Gabriels Field Trip. California 2 Ritter 154, 16 F
GRD02PNS0 Anorthosite Large plagioclase feldspar with interstital green pyroxene. White rims around the plagioclase. Original label: San Gabriels Field Trip. California 2 Ritter 154, 16 F
GRD02POS0 Anorthosite Large plagioclase feldspar with trace interstital green pyroxene. Original label: Syenite? California 2 Ritter 154, 16 F
GRD02PPS0 Anorthosite Large plagioclase feldspar with trace interstital green pyroxene and magnetite. Original label: Syenite? California 2 Ritter 154, 16 F
GRD02Q0S0 Gabbronorite Coarsely crystalline with pyroxene and plagioclase California 2 Ritter 154, 29 F