Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Category
Metamorphic (Likely Gneiss Or Schist Based On Texture)
Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.
Learn about Metamorphic (Likely Gneiss Or Schist Based On Texture) in the encyclopedia
View all →
Sandstone (Quartz Sandstone / Iron-stained Sandstone)
Sandstone (SiO2 with iron oxide impurities)
sedimentary
Sandstone
Arenite (primarily Quartz Arenite)
sedimentary
Quartzite Cobble
Quartzite (SiO2)
metamorphic
Granitic Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Likely weathered quartz-rich rock fragment
Uncertain; possibly granitic pegmatite or quartz-bearing metamorphic rock
igneous
Greenstone / Greenschist
Chlorite schist / Epidiorite
metamorphic
Gneiss (River Cobble)
Gneiss (Foliated Metamorphic Rock)
metamorphic
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Banded Gneiss
Gneiss (pronounced "nice")
Metamorphic Rock
Amphibolite / Hornblende Schist
Amphibolite
metamorphic
Glaucophane-bearing Schist (Blueschist)
Blueschist (Glaucophane-Lawsonite Schist)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Garnet Schist
Mica Schist with Almandine (Fe3Al2(SiO4)3)
metamorphic
Marble
Metamorphosed Limestone (principally CaCO3)
metamorphic
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Igneous
Fossilized Brachiopod
Brachiopoda (likely Order Spiriferida or Productida)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
mineral
Polished turquoise
Turquoise — hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
gemstone
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
metamorphic
Muscovite Schist with Muscovite Mica
Muscovite-rich Schist (KAl2(AlSi3O10)(OH)2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartz-bearing granite or granitic gneiss cobble
Granite; primarily quartz (SiO₂), feldspar, and mica/amphibole
igneous
Mica Schist or Muscovite
KAl2(AlSi3O10)(OH)2
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Mica Schist with Pyrite
Muscovite/Biotite Schist (Complex Silicate)
metamorphic
Likely gray granite fragment
Granite, composed mainly of quartz, feldspar, and mica
igneous
Concrete fragment or Conglomerate
Artificial Conglomerate (Concrete) or Natural Conglomerate
sedimentary
Sandstone (Water-worn Cobble)
Arenite (SiO2 based)
sedimentary
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Beryl (Variety Mix)
Be3Al2(Si6O18)
Mineral
Weathered granite or granitic gneiss pebble
Granite, primarily quartz, feldspar, and mica; possibly weakly foliated gneiss
igneous
Gneiss (specifically a Granitic Gneiss specimen)
Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Feldspathic Gneiss (Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Rounded granitic cobble
Granite or granitic gneiss; primarily quartz, feldspar, and mica
igneous
Epidote in Matrix (likely Amphibolite or Gneiss)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix
metamorphic