Rock Identifier

Category

Man Made Composite

Browse man made composite specimens identified by the Rock Identifier community.

Learn about Man Made Composite in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Lherzolite

Gondite

Dunite

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

River Stone (Limestone) (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

River Stone (Limestone)

Sedimentary Calcium Carbonate (CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Arenite (primarily Quartz-rich sedimentary rock)) — sedimentary

Sandstone

Arenite (primarily Quartz-rich sedimentary rock)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Basalt (Polished Pebble) (Basalt (Mafic volcanic rock)) — igneous

Basalt (Polished Pebble)

Basalt (Mafic volcanic rock)

Sandstone (Ferruginous) (Arenite (SiO2 with Fe2O3 inclusions)) — sedimentary

Sandstone (Ferruginous)

Arenite (SiO2 with Fe2O3 inclusions)

Sandstone (Arenite (primarily SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (likely Quartzite-rich) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely Quartzite-rich)

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartz-rich sandstone (siliciclastic sedimentary rock)) — sedimentary

Sandstone

Quartz-rich sandstone (siliciclastic sedimentary rock)

Banded gneiss pebble (Foliated gneiss, typically quartz–feldspar–mica bearing) — metamorphic

Banded gneiss pebble

Foliated gneiss, typically quartz–feldspar–mica bearing

Yellow chalcedony or citrine-like polished stone (Chalcedony (microcrystalline SiO₂), possibly iron-stained quartz) — mineral

Yellow chalcedony or citrine-like polished stone

Chalcedony (microcrystalline SiO₂), possibly iron-stained quartz

Tumbled yellow chalcedony (likely honey agate) (Microcrystalline quartz, SiO₂; chalcedony variety, possibly iron-stained) — mineral

Tumbled yellow chalcedony (likely honey agate)

Microcrystalline quartz, SiO₂; chalcedony variety, possibly iron-stained

Red Sandstone (Sedimentary Arenite / Quartzose Sandstone) — sedimentary

Red Sandstone

Sedimentary Arenite / Quartzose Sandstone

Leopard Skin Jasper (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Leopard Skin Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Tumbled carnelian or orange chalcedony (Chalcedony, microcrystalline quartz (SiO₂), iron-colored variety) — gemstone

Tumbled carnelian or orange chalcedony

Chalcedony, microcrystalline quartz (SiO₂), iron-colored variety

Rounded gray pebble, likely basalt or fine-grained volcanic rock (Probable basalt; exact identification is uncertain from the photograph) — igneous

Rounded gray pebble, likely basalt or fine-grained volcanic rock

Probable basalt; exact identification is uncertain from the photograph

Sandstone (Arenite (Clastic Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Clastic Sedimentary Rock)

Sandstone (likely Arkosic or Lithic Sandstone) (Sandstone (SiO2 predominant)) — sedimentary

Sandstone (likely Arkosic or Lithic Sandstone)

Sandstone (SiO2 predominant)

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

Sandstone

Arenite (composed primarily of SiO2)

Granite Cobble (Granite) — igneous

Granite Cobble

Granite

Sandstone (Arenite (primarily Quartz-based Sandstone)) — sedimentary

Sandstone

Arenite (primarily Quartz-based Sandstone)

Sandstone (Arenite (Siliclastic sedimentary rock)) — sedimentary

Sandstone

Arenite (Siliclastic sedimentary rock)

Sandstone (with Feldspathic/Arkose qualities) (Arenite (primarily SiO2 with KAlSi3O8 components)) — sedimentary

Sandstone (with Feldspathic/Arkose qualities)

Arenite (primarily SiO2 with KAlSi3O8 components)

Sandstone (Pebble) (Sandstone (SiO2 dominated clastic sedimentary rock)) — sedimentary

Sandstone (Pebble)

Sandstone (SiO2 dominated clastic sedimentary rock)

Red Sandstone (Arenite (primarily Quartz with Iron Oxide coating)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Iron Oxide coating)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartz-rich) (Arenite (Quartz Arenite)) — sedimentary

Sandstone (Quartz-rich)

Arenite (Quartz Arenite)

Basalt (Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8) — igneous

Basalt

Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Stainless Steel Spoon (Iron-Chromium Alloy (Fe + Cr + Ni)) — mineral-based human-made alloy

Stainless Steel Spoon

Iron-Chromium Alloy (Fe + Cr + Ni)

mineral-based human-made alloy

Mica schist (possibly garnet–mica schist) (Muscovite–biotite schist; chiefly quartz, feldspar, muscovite, and biotite) — metamorphic

Mica schist (possibly garnet–mica schist)

Muscovite–biotite schist; chiefly quartz, feldspar, muscovite, and biotite

Red Sandstone (Arenite (with Iron Oxide)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide)