Rock Identifier

Category

Not A Rock Or Mineral

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

Labradorite (Labradorite ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Muscovite Mica (Muscovite / KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

Muscovite / KAl2(AlSi3O10)(OH)2

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Amethyst (Purple Quartz)

Silicon Dioxide (SiO2) with iron impurities

Tiger's Eye (Silicon dioxide (SiO2) with fibrous inclusions of crocidolite) — Mineral

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite

Basalt (with possible quartz veinsing) (Basalt) — igneous

Basalt (with possible quartz veinsing)

Basalt

Chert (Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2)

Schorl (Black Tourmaline) in Quartz or Feldspar Matrix (NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl) in Granitic Pegmatite) — igneous

Schorl (Black Tourmaline) in Quartz or Feldspar Matrix

NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl) in Granitic Pegmatite

Basalt Cobble (Vesicular Basalt (Mafic Extrusive)) — igneous

Basalt Cobble

Vesicular Basalt (Mafic Extrusive)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Metaconglomerate (Metaconglomerate (Quartzite conglomerate)) — metamorphic

Metaconglomerate

Metaconglomerate (Quartzite conglomerate)

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

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Conglomerate (Puddingstone) (Conglomerate (specifically, clastic sedimentary rock)) — Sedimentary

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Sandstone (Sandstone (clastic sedimentary rock, predominantly SiO2)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock, predominantly SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Quartz Pebble (Geode-like) (Silicon Dioxide (SiO2)) — Mineral

Quartz Pebble (Geode-like)

Silicon Dioxide (SiO2)

Quartz (Milky and Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

Quartz (Common Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common Milky Quartz)

Silicon Dioxide (SiO2)

Ruby in Zoisite (Anyolite) (Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))) — metamorphic

Ruby in Zoisite (Anyolite)

Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

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

Silty Shale

Silty Shale (Fissile Sedimentary Rock)

Clear Quartz Cluster (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Pink Anthracite Coal (dyed) (Anthracite Coal (Artificially Colored)) — Sedimentary Rock (Altered)

Pink Anthracite Coal (dyed)

Anthracite Coal (Artificially Colored)

Sedimentary Rock (Altered)

Mica Schist (Mica Schist (Main mineral constituents: Muscovite/Biotite, Quartz, Feldspar)) — metamorphic

Mica Schist

Mica Schist (Main mineral constituents: Muscovite/Biotite, Quartz, Feldspar)

Geode (unopened) or Calcareous Nodule (Siliceous or Calcareous Concretion/Nodule) — sedimentary

Geode (unopened) or Calcareous Nodule

Siliceous or Calcareous Concretion/Nodule

Kimberlite (Kimberlite (Potassic ultramafic volcanic rock)) — igneous

Kimberlite

Kimberlite (Potassic ultramafic volcanic rock)

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

Sandstone

Arenite (composed primarily of SiO2)

Aventurine (Aventurine Quartz (SiO2 with inclusions)) — metamorphic

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Milky Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

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

Amethyst

Silicon dioxide with iron impurities (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Sunkissed Quartz or Hematoid Quartz (Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions) — mineral

Sunkissed Quartz or Hematoid Quartz

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Sandstone Chert Concretion (Silica-cemented Concretion (primarily SiO2)) — sedimentary

Sandstone Chert Concretion

Silica-cemented Concretion (primarily SiO2)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)

Sandstone (Arenite (variable SiO2 composition)) — sedimentary

Sandstone

Arenite (variable SiO2 composition)