Rock Identifier

Category

Not A Rock

Browse not a rock specimens identified by the Rock Identifier community.

Learn about Not A Rock in the encyclopedia

Rock Gypsum

Rock Gypsum

Rock Salt

Rock Salt

Coral Rock

Coral Rock

Asphalt Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Cataclasite

Cataclasite

Anorthosite

Anorthosite

Gondite

Gondite

Peridotite

Peridotite

Epidosite

Epidosite

Phosphorite

Phosphorite

Sandstone (Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)) — sedimentary

Sandstone

Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)

Granite / Gneiss Complex (Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)) — igneous/metamorphic

Granite / Gneiss Complex

Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)

igneous/metamorphic

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Clastic Sedimentary Rock (composed mostly of SiO2)) — sedimentary

Sandstone

Clastic Sedimentary Rock (composed mostly of SiO2)

Tree Agate (Silicon Dioxide (SiO2) with Chlorite inclusions) — mineral

Tree Agate

Silicon Dioxide (SiO2) with Chlorite inclusions

Garden Pebble (Quartzite or Limestone fragment) (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) fragment) — sedimentary

Garden Pebble (Quartzite or Limestone fragment)

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) fragment

Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminum)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminum)

Grey Chalcedony (Silicon Dioxide (SiO2)) — mineral

Grey Chalcedony

Silicon Dioxide (SiO2)

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz (likely Herkimer Diamond style) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Herkimer Diamond style)

Silicon Dioxide (SiO2)

Geode (Unopened) (Crystalline Quartz or Chalcedony filled Geode (SiO2)) — sedimentary

Geode (Unopened)

Crystalline Quartz or Chalcedony filled Geode (SiO2)

Bloodstone (Chalcedony (Quartz)) — Mineral

Bloodstone

Chalcedony (Quartz)

Quartzite (Quartzite (Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (Silicon Dioxide, SiO2)

Dyed Agate (Agate (Silicon dioxide)) — Mineral

Dyed Agate

Agate (Silicon dioxide)

Agate Geode (Cryptocrystalline Quartz (SiO2) with Chalcedony banding) — mineral

Agate Geode

Cryptocrystalline Quartz (SiO2) with Chalcedony banding

Rose Quartz (Silicon dioxide (SiO2) with traces of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon dioxide (SiO2) with traces of titanium, iron, or manganese

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Lapis Lazuli (polished cabochon/sphere) (Na8[Al6Si6O24]Sn with accessory minerals (Pyrite, Calcite)) — metamorphic

Lapis Lazuli (polished cabochon/sphere)

Na8[Al6Si6O24]Sn with accessory minerals (Pyrite, Calcite)

Carnelian and White Quartz Bracelet (Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz) — mineral

Carnelian and White Quartz Bracelet

Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz

Travertine (Tufa limestone (CaCO3)) — sedimentary

Travertine

Tufa limestone (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Slate (Slate (Foliated Metamorphic Rock)) — metamorphic

Slate

Slate (Foliated Metamorphic Rock)

Serpentine (Serpentinite (group of minerals based on (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)) — metamorphic

Serpentine

Serpentinite (group of minerals based on (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite (mostly SiO2)) — sedimentary

Sandstone

Arenite (mostly SiO2)

Sandstone (Arenite (predominantly SiO2 with iron oxides)) — sedimentary

Sandstone

Arenite (predominantly SiO2 with iron oxides)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Sandstone with Quartz Veining (Arenite with SiO2 veins) — sedimentary

Sandstone with Quartz Veining

Arenite with SiO2 veins

Quartzite Cobble (Quartzite (principally SiO2)) — metamorphic

Quartzite Cobble

Quartzite (principally SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Conglomerate (Conglomeratic Sandstone) — sedimentary

Conglomerate

Conglomeratic Sandstone

Banded Gneiss (Banded Orthogneiss or Paragneiss (Quartz-Feldspathic Gneiss)) — metamorphic

Banded Gneiss

Banded Orthogneiss or Paragneiss (Quartz-Feldspathic Gneiss)

Yellow Jasper (Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)) — sedimentary

Yellow Jasper

Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)

Banded Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Banded Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Leopard Skin Jasper (Rhyolite (Silicon Dioxide - SiO2 with impurities)) — sedimentary

Leopard Skin Jasper

Rhyolite (Silicon Dioxide - SiO2 with impurities)

Gneiss (Green Gneiss) (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss (Green Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)