Rock Identifier

Category

Mineraloid (Man Made Origin)

Browse mineraloid (man made origin) specimens identified by the Rock Identifier community.

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

Carnelian Agate (Silicon Dioxide (SiO2) - Variety: Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - Variety: Chalcedony

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Ferruginous Sandstone (Arenite with Iron-Oxide Cement) — sedimentary

Ferruginous Sandstone

Arenite with Iron-Oxide Cement

Sodalite and Calcite (Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)) — mineral

Sodalite and Calcite

Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Ironstone Concretion (Limonitic/Hematitic Concretion) — sedimentary

Ironstone Concretion

Limonitic/Hematitic Concretion

Strawberry Quartz (or Hematoid Quartz) (Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite) — mineral

Strawberry Quartz (or Hematoid Quartz)

Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite

Ironstone Nodule (Ironstone Concretion) (Siderite-rich Mudstone (FeCO3) or Limonite (FeO(OH)·nH2O)) — sedimentary

Ironstone Nodule (Ironstone Concretion)

Siderite-rich Mudstone (FeCO3) or Limonite (FeO(OH)·nH2O)

Jasper (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Red Sandstone (Arenite (primarily composed of SiO2 with Fe2O3 cement)) — sedimentary

Red Sandstone

Arenite (primarily composed of SiO2 with Fe2O3 cement)

Jasper (Silicon Dioxide (SiO2)) — sedimentary/mineral

Jasper

Silicon Dioxide (SiO2)

sedimentary/mineral

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

Sandstone (Ferruginous)

Arenite (with Iron Oxide)

Chalcedony (Agate/Blue Quartzite) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Blue Quartzite)

Silicon Dioxide (SiO2)

Zebra Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Zebra Jasper

Silicon Dioxide (SiO2) with impurities

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

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety) (Porphyritic Basalt containing Plagioclase Feldspar phenocrysts) — igneous

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety)

Porphyritic Basalt containing Plagioclase Feldspar phenocrysts

Tiger's Eye (Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)) — Mineral

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)

Coral Fossil Rock (Syringopora) (Syringopora (Organ-pipe Coral fossil in Limestone matrix)) — sedimentary

Coral Fossil Rock (Syringopora)

Syringopora (Organ-pipe Coral fossil in Limestone matrix)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Sandstone (likely Graywacke or Arkose variant) (Clastic Sedimentary Rock (SiO2 based)) — sedimentary

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Sandstone (likely with Quartz Veining) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely with Quartz Veining)

Arenite (primarily SiO2)

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

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

Iron-Nickel Meteorite (Siderite (Meteoric Iron-Nickel alloy)) — igneous

Iron-Nickel Meteorite

Siderite (Meteoric Iron-Nickel alloy)

Hematite Nodule (Hematite (Fe2O3)) — mineral

Hematite Nodule

Hematite (Fe2O3)

Yellow Quartz (SiO2 (Silicon Dioxide)) — mineral

Yellow Quartz

SiO2 (Silicon Dioxide)

Granite (with Quartz and Mica) (Phaneritic Felsic Igneous Rock) — igneous

Granite (with Quartz and Mica)

Phaneritic Felsic Igneous Rock

Mica Schist (Mica Schist (primarily Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2 + Fe2O3)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2 + Fe2O3)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

River Pebble (Chert/Quartzite) (Microcrystalline Quartz (SiO2)) — sedimentary

River Pebble (Chert/Quartzite)

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Banded Agate (Agate (Silicon Dioxide, SiO2)) — mineral

Banded Agate

Agate (Silicon Dioxide, SiO2)

Ferruginous Sandstone (Arenite with Iron Oxide cement (primarily Fe2O3)) — sedimentary

Ferruginous Sandstone

Arenite with Iron Oxide cement (primarily Fe2O3)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)