Sample Type is Metamorphic › Foliated › Gneiss › Augen Gneiss
16 records | DownloadIGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
---|---|---|---|---|---|
GRD01N9S0 | Augen Gneiss | Original description: Monte Rosa augen gniess from a quarry close to photographed outcrop. | Italy | 0 | |
GRD01UTS0 | Augen Gneiss | Plagioclase-quartz-biotite. A few plagioclase augen. moderate banding. Good foliation. | California | 1 | Ritter 154, 14 A |
GRD01UUS0 | Augen Gneiss | Plagioclase-quartz-amphibole-biotite-garnet. Medium- to coarse-grained. Gradation from schist to gneiss. Gneiss has potassium feldspar augen and banding. See also M-110. | California | 0 | Ritter 154, 14 A |
GRD01V0S0 | Augen Gneiss | Small sample of gneiss composed of muscovite-biotite-quartz-potassium feldspar. Large augen, some with rim overgrowths. | Switzerland | 0 | Ritter 154, 14 A |
GRD01VJS0 | Augen Gneiss | Quartz-potassium feldspar-plagioclase-biotite gneiss. Potassium feldspar augen. Decent banding and nice lineations. | 0 | Ritter 154, 14 B | |
GRD01X6S0 | Augen Gneiss | Medium-sized sample of gneiss composed of potassium feldspar-quartz-chlorite-muscovite. Well-foliated. Large white potassium feldspar augen. | Alpine | 1 | Ritter 154, 14 B |
GRD01XLS0 | Augen Gneiss | Large sample of gneiss composed of biotite-potassium feldspar-quartz. Potassium feldspar augen. Discontinuous banding. | 1 | Ritter 154, 24 A | |
GRD01XNS0 | Augen Gneiss | Small slab of gneiss composed of quartz-muscovite-potassium feldspar; Foliated/banding. Potassium feldspar augen. | Alpine | 1 | Ritter 154, 14 B |
GRD01XUS0 | Augen Gneiss | Biotite-quartz-potassium feldspar- oxides (trace)- amphibole (trace). Medium-grained. Slight banding with augen. | California | 0 | Ritter 154, 24 B |
GRD01XWS0 | Augen Gneiss | Chlorite-quartz-pyrite (trace) gneiss. Augen/stringers of quartz. Medium-grained. Original description: amphibolite (?). | Alps | 0 | Ritter 154, 14 B |
GRD020TS0 | Augen Gneiss | Large sample of a gneiss composed of biotite- potassium feldspar- quartz- pyrite (rare). Potassium feldspar augen and no banding. The largest augen has a bleb of pyrite inside. Original description: Augen gneiss. Microcline porphyroblasts replacing metagreywacke. Qtz-biotite-garnet-microcline. Granulite facies. | New York | 0 | Ritter 154, 24 A |
GRD020VS0 | Augen Gneiss | Medium-sized sample of coarse-grained gneiss composed of potassium-feldspar-quartz-magnetite-biotite-garnet. Large potassium feldspar augen. One side of the sample is heavily weathered. | 0 | Ritter 154, 24 A | |
GRD021DS0 | Augen Gneiss | Medium-sized sample of augen gneiss composed of potassium feldspar-quartz-biotite-amphibole. Sample has discontinuous banding and poorly developed augen. Melanocratic bands: biotite and amphibole; Leucocratic bands: Potassium feldspar and quartz. No rose quartz. Original description: Gneiss with rose quartz augen. | California | 0 | Ritter 154, 24 A |
GRD021JS0 | Augen Gneiss | Polished samples of gneiss composed of potassium feldspar-quartz-biotite. Large potassium feldspar augen in melanocratic layer of biotite and quartz. No prominent banding | 0 | Ritter 154, 14 B | |
GRD02T7S0 | Augen Gneiss | Meta-gneiss containing large K-spars(2-3 cm) intermingled with quartz and biotite. Moderately developed foliation | Brazil | 0 | Ritter 154, 14 B |
GRD02VFS0 | Augen Gneiss | Epidote segregation in amphibolite gneiss. | California | 0 | Ritter 154, 24 A |