Geological Teaching Collection

  1. Database Home

Search Results

Sample Type is Igneous › Plutonic › Felsic Intrusive

220 records | Download
IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD02W8S0 Felsic Intrusive Aplite(?). Original Description: Schist pendant. Siliceous schist California 2 Camp Elliott
GRD02W9S0 Felsic Intrusive California 0 Camp Elliott
GRD02WLS0 Granite Sulfide bearing granitic rock. Oligoclase, K-spar, Quartz, Biotite with chalcopyrite and other sulfide minerals California 0 Ritter 154, 15 B
GRD02WWS0 Granite Microcline, Smoky Quartz, Horblende, Plagioclase Massachusetts 0 Ritter 154, 15 B
GRD02X7S0 Granite No known information of origin and composition. Appears to be Granodiorite California 0 Camp Elliott
GRD02XUS0 Syenite Nepheline bearing Syenite Wisconsin 0 Ritter 154, 15 D
GRD02YDS0 Granite Graphic Granite. Quartz-Plag. Pegmatitic 0 Ritter 154, 11 A
GRD03Z2S0 Monzonite Palm sized slab of monzonite. Grain size transitions from medium to fine grain across sample. California 0 Ritter 154, 15 E
GRD03ZLS0 Granite Chuar Group of Grand Canyon Supergroup. This is a granite, granites are not a part of the supergroup. Could be from intrusive body within supergroup Arizona 0 Ritter 154, 29 H
GRD0409S0 Monzonite Twin Spruce Quartz Monzonite. Trace Allanite, Apatite and Zircon. Colorado 0 Ritter 154, 29 J
GRD040JS0 Monzonite Silver Plume quartz monzonite. Colorado 0 Ritter 154, 29 J
GRD040PS0 Monzonite Dike of Silver Plume Quartz Monzonite. Colorado 0 Ritter 154, 29 J
GRD040RS0 Monzonite Twin Spruce Quartz Monzonite. Colorado 0 Ritter 154, 29 J
GRD040SS0 Monzonite Twin Spruce Quartz Monzonite, a somewhat less leucocratic facies. Very little rock that does not have some slight iron staining. Colorado 0 Ritter 154, 29 J
GRD040YS0 Granite grey, two-mica granite (Concord granite) New Hampshire 0 Ritter 154, 29 I
GRD0411S0 Monzonite Leucocratic facies of Kinsman quartz monzonite (now mapped as Kinsman granodiorite) at specimen locality NHS-07. New Hampshire 0 Ritter 154, 29 I
GRD0412S0 Monzonite Kinsman quartz monzonite (now mapped as Kinsman granodiorite); garnet, Kspar New Hampshire 0 Ritter 154, 29 I
GRD0413S0 Granite Spaulding sillimanite-bearing granite (now mapped as part of Concord granite) New Hampshire 0 Ritter 154, 29 I
GRD0418S0 Granite Spotted Spaulding granite. This is not the major facies at this occurrence. It occurs as an irregular sill. The spotted aspect extends thru a variety of more mafic facies. Hand specimen provided by Dr. Lyon was imperative to the selection of the correct facies. New Hampshire 0 Ritter 154, 29 I
GRD041AS0 Granite aplitic Concord granite New Hampshire 0 Ritter 154, 29 I
GRD041BS0 Granite Muscovite granite, Concord granite. Quite coarse grained facies. New Hampshire 0 Ritter 154, 29 I
GRD041CS0 Granite Two-mica granite, Concord granite. Relatively coarse facies. Lyons No. 107-74. New Hampshire 0 Ritter 154, 29 I
GRD041DS0 Monzonite Kinsman Quartz Monzonite (now mapped as part of Kinsman granodiorite) New Hampshire 0 Ritter 154, 29 I
GRD041FS0 Granite Dark facies of Concord Granite New Hampshire 0 Ritter 154, 29 I
GRD041PS0 Granite Mount Whitney Pluton. Granodiorite with k-spar megacryst (5 x 3 cm) California 0 Ritter 154, 15 B
GRD0431S0 Granite Coarse grained Granite South Carolina 2 Ritter 154, 3 D
GRD0436S0 Monzonite Monzosyenite. Part of Sybille intrusion. Perthitic black K-spar, plagioclase, augite, orthopyroxene, inverted pigeonite, fayalitic olivine, and ilmenite. Dark K-spar color due to numerous oxide inclusions. Wyoming 0 Ritter 154, 15 E
GRD043QS0 Granite Meredith Granite (also called Kinsman quartz monzonite of New Hampshire Series), older material intruded by White Mtn Complex New Hampshire 0 Ritter 154, 29 E
GRD043QS1 Granite Meredith Granite (also called Kinsman quartz monzonite of New Hampshire Series), older material intruded by White Mtn Complex New Hampshire 0 Ritter 154, 29 E
GRD043RS0 Syenite syenite dike, 20 feet thick, contact with Winnipesaukee quartz diorite; part of older material intruded by White Mtn Complex New Hampshire 0 Ritter 154, 29 E