Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
metamorphic
Category
Sedimentary Or Metamorphic Derived
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
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Quartzite Pebble (River Rock)
Quartzite (SiO2)
metamorphic
Greenstone
Greenschist / Meta-basalt
metamorphic
Fuchsite Quartzite
Fuchsite-bearing Quartzite
Metamorphic
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Shale (possibly Carbonaceous or Oil Shale)
Argillaceous Sedimentary Rock
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in a Geode
mineral
River Stone (Chalcedony/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Jasper (likely a variety of Brecciated Jasper or a patterned variety)
Silicon dioxide (SiO2)
Mineral
Sand (Construction Grade)
Unconsolidated siliciclastic sediment (primarily SiO2)
sedimentary
Quartz Geode with Calcite
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
Mineral/Sedimentary
Red Jasper (Microcrystalline Quartz)
SiO2 (Silicon Dioxide) with Iron Oxide inclusions
sedimentary
Green Common Opal
Hydrated Silica (SiO2·nH2O)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Common Opal with Host Rock
Opal (Hydrated silica, SiO2·nH2O)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Petrified Wood (Silicified Wood)
Silicified fossil wood (SiO2)
metamorphic
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Quartz (likely Rose Quartz or Milky Quartz based on color)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
sedimentary
Yellow Quartzite (River Stone)
Quartzite (primarily SiO2)
metamorphic
Sandstone (Arkose)
Arkose Sandstone (SiO2 with KAlSi3O8)
sedimentary
Gneiss with Quartz Vein
Gneiss (containing SiO2 vein)
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Quartzite (Banded)
Metamorphosed Sandstone (SiO2 with impurities)
metamorphic
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Quartz (pebble)
Quartz (SiO₂)
Mineral
Quartzite
Quartzite (Silicon Dioxide, SiO2)
metamorphic
Greenstone (Epidosite / Chlorite Schist)
Metabasalt (often contains Epidote Ca2Al2(Fe3+,Al)(SiO4)(Si2O7)O(OH) or Chlorite)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite (or Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
metamorphic
Quartzite Cobble
Quartzite (composed primarily of SiO2)
metamorphic
Quartzite River Stone
Metamorphosed Quartz-rich Sandstone (SiO2)
metamorphic
Petrified Wood
Silicified wood (primarily Quartz/Chalcedony, SiO2)
metamorphic
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Manhattan Schist
Manhattan Schist (Aluminous Metasedimentary Rock)
metamorphic