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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
GRD02R0S0 Mafic Intrusive Gabbro Norite with shear zone showing cataclasis. Original Description: Layered Gabbro/Troctolite. California 2 Ritter 154, 16 D
GRD02R1S0 Mafic Intrusive Wehrlite, may contain enough Opx to be considered Lherzolite. Original Description: Mela-Norite Dike cutting Calif 1237 and Calif 1238 California 2 Ritter 154, 16 D
GRD02R2S0 Anorthosite Medium grained plagioclase, amphibole rich. California 0 Ritter 154, 16 C
GRD02R3S0 Gabbro Hb gabbro; part of meter scale dike with very large amphibole crystals perpendicular to the margin. 3-6 cm Hb crystals with altered plagioclase. Slightly fractured. California 0 Ritter 154, 16 C
GRD02R4S0 Gabbro California 0 Ritter 154, 20 B
GRD02R5S0 Gabbro Amphibole plag banding, medium grained. Plag and hornblend approximately one cm in size. Moderate weathering. Opx, possibly some olivine California 0 Ritter 154, 16 D
GRD02RXS0 Gabbronorite Fine grained massive Gabbronorite. Plagioclase, Hornblende, Pyroxene. 2 Ritter 154, 3 E
GRD02S2S0 Gabbro Washington 0 Ritter 154, 3 C
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
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
GRD02UCS0 Gabbro Cuyamaca Gabbro California 2 Ritter 154, 16 D
GRD02UVS0 Gabbro Cuyamaca Gabbro California 2 Ritter 154, 16 D
GRD02UXS0 Gabbro Pt Sal Ophiolite, Stop 3 gabbro. California 2 Ritter 154, 29 F
GRD02V0S0 Gabbro Pt. Sal ophiolite. Stop 8, troctolite. California 2 Ritter 154, 29 F
GRD02VMS0 Gabbro Gabbro California 0 Camp Elliott
GRD02WIS0 Gabbro Hornblende Gabbro. Coarse Grain California 1 Ritter 154, 16 D
GRD02WRS0 Gabbro Mylonitic gabbro California 2 Ritter 154, 29 F
GRD02WUS0 Gabbro Gabbro from Point Sal Ophiolite California 2 Ritter 154, 29 F
GRD02WZS0 Anorthosite Unknown origin, Anorthosite?. California 4 Ritter 154, 16 F
GRD03Z5S0 Mafic Intrusive Great Whin Sill United Kingdom 0 Ritter 154, 16 I
GRD043TS0 Mafic Intrusive diabase dike, White Mtn Complex age or more recent New Hampshire 0 Ritter 154, 29 E
GRD043TS1 Mafic Intrusive Contact of diabase with coarser grain igneous. Diabase dike, White Mtn Complex age or more recent New Hampshire 0 Ritter 154, 29 E
GRD043ZS0 Mafic Intrusive vent agglomerate dike, Rowes vent, with pink syenite xenoliths. Dike cuts Endicott diorite and breccia. New Hampshire 0 Ritter 154, 29 E
GRD043ZS1 Mafic Intrusive vent agglomerate dike, Rowes vent, with pink syenite xenoliths. Dike cuts Endicott diorite and breccia. New Hampshire 0 Ritter 154, 29 E
GRD0443S0 Mafic Intrusive Rowes vent agglomerate. New Hampshire 0 Ritter 154, 29 E