Epidosite
Epidosite (composed primarily of Epidote and Quartz)
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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Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Granite Gneiss
Felsic Gneiss (composed of Quartz, Feldspar, and Biotite)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Dalmatian Stone
Dalmatian Jasper (a misnomer) / Perthitic Feldspar Rock
igneous
Limestone
Sedimentary rock primarily composed of Calcite (CaCO3)
sedimentary
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Quartzite (River Pebble)
Meta-quartzite (composed primarily of SiO2)
metamorphic
Quartzite Pebble
Quartzite (composed primarily of Silica, SiO2)
metamorphic
Weathered iron-stained quartzite or sandstone cobble
Quartzite (quartz-rich rock), possibly ferruginous sandstone
metamorphic
Quartz-rich metamorphic rock, likely milky quartz or quartzite
Quartz (SiO₂); possibly quartzite composed predominantly of recrystallized quartz
metamorphic
Granite / Quartzite Specimen
Granite / Quartz (SiO2 with Feldspar and Mica)
igneous
Banded Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)
metamorphic
Soapstone (Talc Steatite) Carving
Steatite (Hydrous magnesium silicate, Mg3Si4O10(OH)2)
metamorphic
Banded gneiss pebble
Gneiss, composed chiefly of quartz, feldspar, and mica/amphibole
metamorphic
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)
sedimentary
River Siltstone Pebble
Siltstone (primarily composed of silica and clay minerals)
sedimentary
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Sandstone)
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, or Chrysotile)
metamorphic
Sandstone with Manganese Oxide Patina
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Gneiss
Gneiss (Metamorphic rock)
metamorphic
Granite
Granite
igneous
Sandstone
Arenite (Siliclastic sedimentary rock), SiO2 + various minerals
sedimentary
Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst)
Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage
mineral
Granite Pebble
Intrusive Igneous Rock
igneous
Red Sandstone
Arenite (primarily quartz with iron oxide cement)
sedimentary
Unakite
Epidotized Granite
metamorphic
Granite Pebble
Intrusive Igneous Rock
igneous
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Serpentinite
Serpentinite (composed primarily of serpentine group minerals including antigorite, chrysotile, and lizardite)
metamorphic
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Sandstone Pebble
Sedimentary quartz arenite
sedimentary
Dalmatian Jasper
Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)
igneous
Granite cobble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Quartzite
Quartzite (primarily composed of SiO O₂)
Sedimentary Rock
River Stone (composed of Siltstone/Basalt mixture)
Siltstone or microcrystalline Basalt pebble
sedimentary
Dalmatian Stone
Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)
igneous
Quartz Vein in Metamorphic Rock
Quartz-veined Schist or Gneiss
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous