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Sample Type is Metamorphic

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IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD02V1S0 Serpentinite Coast Range- Franciscan melange. Rte 41, 6 miles east of Morro Bay. Dike in serpentine(?) H2B. California 2 Ritter 154, 14 M
GRD02V3S0 Schist 3 small pieces of folded mica schist. Sample 14 from N. Calif field trip with E. Silver January 1968 California 2 Ritter 154, 24 I
GRD02V4S0 Schist Franciscan Formation Greywacke.QF segregation interlayered with metaseds. California 0 Camp Elliott
GRD02V6S0 Layered Gneiss QF schist-gneiss California 0 Camp Elliott
GRD02V7S0 Schist Biotite Calc-silicate schist California 0 Camp Elliott
GRD02V8S0 Layered Gneiss Calc-silicate gneiss. California 0 Camp Elliott
GRD02VBS0 Non-layered Gneiss Flaser gneiss. Interlayered with marble and amphibolite gneiss California 1 Camp Elliott
GRD02VBS1 Layered Gneiss Flaser Gneiss. Interlayered with marble and amphibolite gneiss. California 0 Camp Elliott
GRD02VFS0 Augen Gneiss Epidote segregation in amphibolite gneiss. California 0 Ritter 154, 24 A
GRD02VGS0 Schist Qf schist pelitic biotite schist with red staining California 0 Ritter 154, 24 D
GRD02VHS0 Layered Gneiss Qf gneiss, interlayered with metaseds. California 0 Camp Elliott
GRD02VIS0 Ga-bearing Schist Garnetiferous Schist, interlayered with migmatitic rocks and metaseds. California 0 Ritter 154, 24 D
GRD02VJS0 Marble Marble w/ graphite, interlayered with amphibolite gneisses California 0 Camp Elliott
GRD02VUS0 Schist Biotite-quartz schist, metaled series, from outcrop at the iron railing overlooking Butterfield trail. 14 Jan 1968 California 0 Camp Elliott
GRD02VVS0 Quartzofeldspathic Quartz and k-spar California 0 Camp Elliott
GRD02VZS0 Non-layered Gneiss Unknown origin or composition. Blue/Gray rock with minor foliation. California 2 Camp Elliott
GRD02W1S0 Schist California 1 Camp Elliott
GRD02W5S0 Gneiss Pinto gneiss. Joshua Tree National monument. Nov 66. Near contact w/ white Tank Qtz Monz California 0 Camp Elliott
GRD02W7S0 Schist Julian schist, about1 1/2 mile west of Julian California 2 Ritter 154, 24 D
GRD02WMS0 Quartzite Meta-quartzite, intensely sheared, flattened and recrystallized. Muscovite has formed on shear planes. Protolith would have been nearly pure quartz sand with minor clay to form the muscovite California 1 Camp Elliott
GRD02WVS0 Schist Quartz-Mica Schist. Thin sections not all even thickness. California 3 Ritter 154, 24 D
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
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
GRD02X3S0 Serpentinite Serpentinite(?). Location of origin and age unknown. California 0 Ritter 154, 14 M
GRD02X6S0 Mylonite Villager Peak Mylonite, mostly quartz California 2 Ritter 154, 14 B
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
GRD02XIS0 Cataclastic Cataclasite California 0 Camp Elliott