Rock Identifier

Category

Sedimentary Or Metamorphic (Base Substrate)

Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.

Gneiss (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade regional metamorphic rock)

Arkosic Sandstone (or Conglomeritic Sandstone fragment) (Arkose (rich in feldspar)) — sedimentary

Arkosic Sandstone (or Conglomeritic Sandstone fragment)

Arkose (rich in feldspar)

Brecciated Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Coarse Sand Grain / Lithic Fragment (Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)) — sedimentary

Coarse Sand Grain / Lithic Fragment

Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)

Petrified Wood (Silicified Wood (primarily SiO₂ - Silicon Dioxide)) — metamorphic

Petrified Wood

Silicified Wood (primarily SiO₂ - Silicon Dioxide)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

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

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

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

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Granite Gneiss (Gneiss (High-grade regional metamorphic rock)) — Metamorphic

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

Dyed Agate (Chalcedony (SiO2)) — mineral

Dyed Agate

Chalcedony (SiO2)

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

Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Multi-gemstone Quartz and Fluorite Bracelet (Silicon Dioxide (SiO2) and Calcium Fluoride (CaF2)) — mineral

Multi-gemstone Quartz and Fluorite Bracelet

Silicon Dioxide (SiO2) and Calcium Fluoride (CaF2)

Quartz / Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz / Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Turquoise and Hematite (CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Fe2O3 (Hematite)) — mineral

Turquoise and Hematite

CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Fe2O3 (Hematite)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

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

Milky Quartz (or Vein Quartz)

Silicon Dioxide (SiO2)

Lava Stone and Chakra Beads (Basalt (with various mineral/synthetic beads)) — igneous

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

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

Quartz (Milky or Common Quartz)

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO₂)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Pyrite (Iron Pyrite) (Iron Sulfide (FeS2)) — mineral

Pyrite (Iron Pyrite)

Iron Sulfide (FeS2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

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

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky or Rough Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Rough Quartz)

Silicon Dioxide (SiO2)

Garnet (Almandine variety) (Almandine, Fe3Al2(SiO4)3) — Mineral

Garnet (Almandine variety)

Almandine, Fe3Al2(SiO4)3

Banded Gneiss (Gneiss (Metamorphic high-grade rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic high-grade rock)

Banded Gneiss (Gneiss (Metamorphic high-grade rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic high-grade rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Gneiss (Schistose) (Gneiss) — metamorphic

Gneiss (Schistose)

Gneiss

Quartzite (Rounded Pebble) (Quartzite (predominantly SiO2)) — metamorphic

Quartzite (Rounded Pebble)

Quartzite (predominantly SiO2)

Gneiss (specifically a Granitic Gneiss) (Gneiss (Composition: Quartz, Feldspar, Mica)) — metamorphic

Gneiss (specifically a Granitic Gneiss)

Gneiss (Composition: Quartz, Feldspar, Mica)

Banded Gneiss (Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Biotite/Amphiboles)) — metamorphic

Banded Gneiss

Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Biotite/Amphiboles)

Coquina (Fossiliferous Limestone) (Coquina (Organic Clastic Limestone)) — sedimentary

Coquina (Fossiliferous Limestone)

Coquina (Organic Clastic Limestone)