Rock Identifier

Category

Not A Rock Or Mineral (Anthropogenic Material)

Browse not a rock or mineral (anthropogenic material) specimens identified by the Rock Identifier community.

Ferruginous Sandstone (Gozzan) (Iron-rich clastic sedimentary rock with Limonite/Goethite) — sedimentary

Ferruginous Sandstone (Gozzan)

Iron-rich clastic sedimentary rock with Limonite/Goethite

Dyed Agate (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Dyed Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Brecciated Chert (Sedimentary Chert (SiO2) with Calc-Silicate mineralization) — sedimentary

Brecciated Chert

Sedimentary Chert (SiO2) with Calc-Silicate mineralization

Petrified Wood (Silicified Wood (primarily Quartz/Chalcedony, formula: SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, formula: SiO2)

Sandstone (Ferruginous) (Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Chalcedony on Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony on Matrix

Silicon Dioxide (SiO2)

White Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

White Quartz Pebble

Silicon Dioxide (SiO2)

Chert with Quartz Veining (Silicon Dioxide (SiO2)) — sedimentary

Chert with Quartz Veining

Silicon Dioxide (SiO2)

Exposed Aggregate Concrete (Pea Gravel) (Concrete with Siliceous Alluvial Gravels) — sedimentary (man-made conglomerate)

Exposed Aggregate Concrete (Pea Gravel)

Concrete with Siliceous Alluvial Gravels

sedimentary (man-made conglomerate)

Quartz Vein Outcrop (Silicon Dioxide (SiO2)) — mineral

Quartz Vein Outcrop

Silicon Dioxide (SiO2)

Olivine in Basalt matrix (Peridotite (Mg, Fe)2SiO4) — igneous

Olivine in Basalt matrix

Peridotite (Mg, Fe)2SiO4

Basalt (Crushed Stone Aggregate) (Mafic Volcanic Basalt (Major Minerals: Plagioclase Feldspar, Pyroxene, Olivine)) — igneous

Basalt (Crushed Stone Aggregate)

Mafic Volcanic Basalt (Major Minerals: Plagioclase Feldspar, Pyroxene, Olivine)

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Silty Shale (Silty Shale (Fissile Sedimentary Rock)) — sedimentary

Silty Shale

Silty Shale (Fissile Sedimentary Rock)

Biotite (Mica) (Biotite group (K(Mg,Fe)3AlSi3O10(F,OH)2)) — mineral

Biotite (Mica)

Biotite group (K(Mg,Fe)3AlSi3O10(F,OH)2)

Dendritic Agate (Tree Agate) (Chalcedony (Silicon Dioxide, SiO2) with Manganese or Iron Oxide inclusions) — mineral

Dendritic Agate (Tree Agate)

Chalcedony (Silicon Dioxide, SiO2) with Manganese or Iron Oxide inclusions

Tree Agate (or Moss Agate) (Dendritic Agate (Silicon Dioxide - SiO2)) — mineral

Tree Agate (or Moss Agate)

Dendritic Agate (Silicon Dioxide - SiO2)

Bumblebee Jasper (Calcite-bearing Volcanic Tuff containing Sulfur and Arsenic (Orpiment/Realgar)) — sedimentary

Bumblebee Jasper

Calcite-bearing Volcanic Tuff containing Sulfur and Arsenic (Orpiment/Realgar)

Petrified Wood (Silicified Wood (primarily SiO₂ / Silicon Dioxide)) — mineral

Petrified Wood

Silicified Wood (primarily SiO₂ / Silicon Dioxide)

Cobalt Blue Sea Glass (Amorphous Silica Glass (SiO2 + CoO)) — mineraloid / anthropogenic material

Cobalt Blue Sea Glass

Amorphous Silica Glass (SiO2 + CoO)

mineraloid / anthropogenic material

Bauxite (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Unidentifiable Rock Fragment — Uncertain

Unidentifiable Rock Fragment

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartzose Sandstone) (Arenite (primarily SiO2 with minor Fe2O3)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2 with minor Fe2O3)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Vesicular Basalt (Iron-rich) (Scoriaceous Basalt / Oxidized Vesicular Basalt) — igneous

Vesicular Basalt (Iron-rich)

Scoriaceous Basalt / Oxidized Vesicular Basalt

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Sandstone (likely Arkosic or Quartzose) (Sandstone (SiO2 with inclusions)) — sedimentary

Sandstone (likely Arkosic or Quartzose)

Sandstone (SiO2 with inclusions)

Sandstone (Arenite (Siliclastic sedimentary rock, primarily SiO2)) — sedimentary

Sandstone

Arenite (Siliclastic sedimentary rock, primarily SiO2)

Sodalite (Sodalite - Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Sandstone (Flagstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Flagstone)

Arenite (composed primarily of SiO2)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Banded Sandstone (Wonderstone) (Sandstone with Liesegang Rings (SiO2 with Iron Oxides)) — sedimentary

Banded Sandstone (Wonderstone)

Sandstone with Liesegang Rings (SiO2 with Iron Oxides)

Sandstone (Quartz-rich) (Clastic sedimentary rock (SiO2 primary)) — sedimentary

Sandstone (Quartz-rich)

Clastic sedimentary rock (SiO2 primary)

Breccia (Breccia) — sedimentary

Breccia

Breccia

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Pyrite (on host rock) (Iron Sulfide (FeS2)) — mineral

Pyrite (on host rock)

Iron Sulfide (FeS2)

Quartz Geode (likely within Limestone or Dolomite matrix) (Quartz (SiO₂)) — Mineral within a Sedimentary Rock

Quartz Geode (likely within Limestone or Dolomite matrix)

Quartz (SiO₂)

Mineral within a Sedimentary Rock

Sandstone with Ironstone Concretion (Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))) — sedimentary

Sandstone with Ironstone Concretion

Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)