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IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD02WRS0 Gabbro Mylonitic gabbro California 2 Ritter 154, 29 F
GRD02WSS0 Ultramafic Intrusive Harzburgite California 2 Ritter 154, 29 F
GRD02WTS0 Ultramafic Intrusive Wehrlite California 2 Ritter 154, 29 F
GRD02WUS0 Gabbro Gabbro from Point Sal Ophiolite California 2 Ritter 154, 29 F
GRD02WVS0 Schist Quartz-Mica Schist. Thin sections not all even thickness. California 3 Ritter 154, 24 D
GRD02WWS0 Granite Microcline, Smoky Quartz, Horblende, Plagioclase Massachusetts 0 Ritter 154, 15 B
GRD02WXS0 Quartzite Quartzite with relict bedding California 0 Ritter 154, 14 L
GRD02WYS0 Metamorphic Unknown origin or composition. Aphanitic dark brown sample. Hornfels(?) California 4 Camp Elliott
GRD02WZS0 Anorthosite Unknown origin, Anorthosite?. California 4 Ritter 154, 16 F
GRD02X0S0 Layered Gneiss Banded Gneiss. Biotite - Quartz - Plag California 4 Ritter 154, 14 A
GRD02X1S0 Layered Gneiss Unknown location of origin and age. California 0 Ritter 154, 24 B
GRD02X2S0 Granodiorite Hornblende-Biotite Granodiorite California 4 Ritter 154, 15 O
GRD02X3S0 Serpentinite Serpentinite(?). Location of origin and age unknown. California 0 Ritter 154, 14 M
GRD02X4S0 Igneous No card California 0 Camp Elliott
GRD02X5S0 Igneous California 0 Camp Elliott
GRD02X6S0 Mylonite Villager Peak Mylonite, mostly quartz California 2 Ritter 154, 14 B
GRD02X7S0 Granite No known information of origin and composition. Appears to be Granodiorite California 0 Camp Elliott
GRD02X8S0 Limestone Laytonville ls. Franciscan fm - Bob Nason field trip # 5 California 0 Camp Elliott
GRD02X9S0 Andesite Basaltic Andesite California 2 Ritter 154, 16 G
GRD02X9S1 Andesite Basaltic Andesite California 2 Camp Elliott
GRD02XAS0 Basalt Basalt with plagioclase phenocrysts California 0 Ritter 154, 16 G
GRD02XBS0 Sedimentary Ore Deposits Gold bearing conglomerate South Africa 0 Ritter 154, 14 R
GRD02XCS0 Organic Oil Shale (Kerogen Shale) Colorado 0 Ritter 154, 17 L
GRD02XDS0 Mudstone Fractured mudstone with quartz veins. Original description: Greenstone. Franciscan Formation. Interlayered with ribbon cherts California 0 Ritter 154, 22 E
GRD02XES0 Greenschist Greenstone. Underlies volcanics California 0 Camp Elliott
GRD02XFS0 Non-layered Gneiss Qf gneiss interlayered with marble. East side of batholith California 0 Camp Elliott
GRD02XGS0 Basalt Sonora Pass. Plag-phyric California 1 Ritter 154, 29 C
GRD02XHS0 Diorite Hornblende Biotite Quartz Diorite. La Posta Quartz Diorite California 0 Ritter 154, 15 P
GRD02XIS0 Cataclastic Cataclasite California 0 Camp Elliott
GRD02XJS0 Schist Orocopia Schist Feb 2000. Large sample of Orocopia Schist, Meta-basalt(?) California 0 Ritter 154, 14 I