Greenschist
Chlorite schist
metamorphic
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Primarily Composed Of Minerals) in the encyclopedia
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Gneiss
Gneiss
metamorphic
Slate
Foliated Metamorphic Rock (composed mainly of Quartz, Illite, and Chlorite)
metamorphic
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Schist
Schist (Crystalline metamorphic rock)
metamorphic
Banded Gneiss
Gneiss
metamorphic
Quartzite with Chlorite/Epidote
Metamorphosed Quartzite (SiO2)
metamorphic
Pebble (river rock/beach pebble)
Pebble (clast size class)
Sedimentary Rock
Pink Granite
Phaneritic intrusive igneous rock with Potassium Feldspar (KAlSi3O8) and Quartz (SiO2)
igneous
Siltstone
Siltstone (primarily composed of SiO2 with various clay minerals)
sedimentary
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Sedimentary Rock (possibly composed of various minerals)
Sandstone Geode (Unbroken)
Siliciclastic sedimentary rock (primarily Quartz)
sedimentary
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone/Quartzite
Sedimentary Rock (composed mainly of SiO2)
sedimentary
Ironstone (Limonite/Hematite)
Ferruginous Sedimentary Rock (composed largely of Fe2O3 and FeO(OH)·nH2O)
sedimentary
Greenschist / Migmatite
Regional Metamorphic Complex (Facies: Greenschist to Amphibolite)
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Sandstone (Quartzose)
Arenite (composed mainly of SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO₂ - Silicon Dioxide)
metamorphic
Basalt
Mafic Igneous Rock (composed primarily of pyroxene and plagioclase)
igneous
Gossan (Iron Hat) with Quartz and Chlorite
Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite
Mineral/Metamorphic Substrate
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Xenolith in Basalt
Mafic Igneous Rock with Felsic Inclusion
igneous
Sandstone (specifically Banded Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Greywacke (likely)
Greywacke (a type of sandstone)
Sedimentary
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Sedimentary
Quartz Druzy (Geode Fragment)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
igneous
Sandstone with Ironstone Banding
Clastic Sandstone (composed of Quartz with Hematite/Limonite bonding)
sedimentary
Magnetite with Serpentine
Magnetite (Fe3O4) in Serpentine Matrix
mineral
Sandstone
Sandstone (various mineral compositions)
Sedimentary
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Diamond
Diamond (Pure Carbon, C)
mineral
Granite
Granite
igneous
Mica Schist
Mica Schist
metamorphic
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Bivalve Shell (Fossil or Contemporary)
Class Bivalvie (various genera and species of clams, cockles, etc.)
Sedimentary (Biogenic sediment or biological remain)
Greenschist (Greenstone)
Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)
metamorphic
Greenschist
Chlorite Schist
metamorphic