Gneiss
Gneiss
metamorphic
Category
Igneous Or Sedimentary
Browse igneous or sedimentary specimens identified by the Rock Identifier community.
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Ruby in Zoisite
Anyolite (Ruby in Zoisite)
metamorphic
Pyrite (locally known as Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz Pebble (Beach Agate / Chalcedony Pebble)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Dyed Quartz Geode
Dyed crystalline quartz (Silicon Dioxide, SiO2)
mineral
Banded Gneiss
Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)
metamorphic
Quartz Drusy on Matrix
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
River Pebble (Gneiss/Schist mix)
Metamorphic rock aggregate
metamorphic
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Quartz-veined Gneiss
Gneiss with Quartz (SiO2) intrusions
metamorphic
Quartz Geode
Silicon dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Chalcedony (Agate/Carnelian)
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Banded Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, feldspar, and mica)
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Foliated Gneiss
metamorphic
Quartz on Host Rock
Silicon Dioxide (SiO2)
Mineral Specimen
Banded Gneiss
Banded Gneiss (High-grade Metamorphic Rock)
metamorphic
Banded gneiss
Foliated silicate rock, typically quartz–feldspar–mica gneiss
metamorphic
Weathered metamorphic rock, likely gneiss or schist
Indeterminate foliated silicate rock; commonly quartz–feldspar–mica assemblage
metamorphic
Gneiss
Metamorphic Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (Metamorphic silicate rock)
metamorphic
Banded Agate (Onyx variant)
Silicon dioxide (SiO2)
sedimentary
Granite Gneiss
Granitic Gneiss
Metamorphic
Banded gneiss
Gneiss, commonly quartz–feldspar–biotite gneiss
metamorphic
Gneiss (with Quartzite and Biotite)
Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)
metamorphic
Quartz Druzy (on Calcedony/Quartz base)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
High-grade Metamorphic Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (Metamorphic high-grade rock)
metamorphic