Quartzite Pebble
Quartzite (composed primarily of SiO2)
metamorphic
Category
Metamorphic Rock (Composed Of Multiple Minerals)
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Composed Of Multiple Minerals) in the encyclopedia
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Greenschist
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
metamorphic
Tumbled jasper pebble
Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides and hydroxides
mineral
Mixed river pebbles and quartz-rich specimens
Polymictic fluvial gravel; likely quartz, quartzite, chert, and weathered feldspathic rocks
sedimentary
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Schist
Metamorphic rock (Schist)
metamorphic
Granite / Diorite (Granitoid)
Granitoid rock (composed mainly of Quartz, Feldspar, and Amphibole/Biotite)
igneous
Granite Pebble
Intrusive Igneous Rock
igneous
Serpentine
Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)
metamorphic
Greenstone (Amygdaloidal Basalt)
Amygdaloidal Basalt (frequently composed of Plagioclase Feldspar, Pyroxene, and Olivine with Chlorite inclusions)
igneous
Quartzite
Quartzite (chiefly SiO2)
metamorphic
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
mineral
Botryoidal chalcedony with quartz vug
Microcrystalline quartz, SiO₂ (chalcedony), with a drusy quartz-lined cavity
mineral
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Granodiorite
Granodiorite (Quartz-Feldspar-Biotite Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Quartzite (Beach Pebble)
Quartzite (composed primarily of SiO2)
metamorphic
Red Sandstone
Sedimentary Arenite / Quartzose Sandstone
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz (pebble)
Quartz (SiO₂)
Mineral
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
igneous
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
mineral
Conglomerate
Conglomerate (Clastic sedimentary rock)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
sedimentary
Lapis Lazuli
Rock composed mainly of lazurite, calcite, and pyrite
gemstone
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica)
metamorphic
Laterite
Laterite (no specific mineral formula as it's a rock type)
Sedimentary
Red Sandstone
Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)
sedimentary
Granite
Intrusive Phaneritic Felsic Igneous Rock
igneous
Sandstone
Arenite (SiO2 primarily)
sedimentary
Dalmatian Jasper
Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Sandstone
Clastic Sedimentary Rock
sedimentary
Likely dark green-gray metamorphic pebble
Indeterminate; possibly chlorite schist, serpentinite, or amphibolite
metamorphic
Quartz
Quartz (SiO₂)
Mineral
Sandstone Pebble
Quartz Sandstone
sedimentary
Garnet in Schist (Mica Schist with Garnet Inclusion)
Garnetiferous Mica Schist (X3Al2(SiO4)3)
metamorphic
Mookaite Jasper
Silicon Dioxide (SiO2) - Radiolarite
sedimentary
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous