Sample Type is Metamorphic › Foliated › Gneiss › Migmatitic Gneiss
5 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD01XZS0 | Migmatitic Gneiss | Large well-foliated sample displaying alternating schistose and gneissic layers with boudins. The dark schistose layers are mainly composed of biotite and quartz. The boudins are mainly quartz, potassium feldspar, plagioclase, and biotite. Grading to migmatite. | 0 | Ritter 154, 14 B | |
| GRD0204S0 | Migmatitic Gneiss | Large sample of biotite-potassium feldspar-garnet-quartz. Coarse-grained and well-foliated (large continuous bands/augens of kspar). Original description: PreC migmatite. | New York | 1 | Ritter 154, 14 I |
| GRD021BS0 | Migmatitic Gneiss | Very large polished slab. Original description: quartz-biotite-muscovite, Tephorite, Spessortite = lamprophyre, epidote veins. | BK, NC | 0 | Ritter 154, 14 R |
| GRD02EJS0 | Migmatitic Gneiss | Original description: Migmatite granitic dike mixed with pelitic garnet-biotite schist. T35 R43. | California | 0 | Ritter 154, 24 B |
| GRD041JS0 | Migmatitic Gneiss | Quartz vein injected into Gneiss ( a rock, banded with alternating layers) showing rolls. Carries Chalcopyrite-Pyrite. | California | 0 | Ritter 154, 14 P |