Rock Identifier

Category

Sedimentary (Anthropogenic)

Browse sedimentary (anthropogenic) specimens identified by the Rock Identifier community.

Banded Agate (Orca Agate) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Banded Agate (Orca Agate)

Silicon Dioxide (SiO2) - Chalcedony variety

mineral
Quartz (Milky or Grainy Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Grainy Variety)

Silicon Dioxide (SiO2)

mineral
Carnelian (Carnelian Agate) (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian (Carnelian Agate)

Carnelian (Silicon Dioxide - SiO2)

mineral
Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

metamorphic
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

sedimentary
Satin Spar (Selenite) (Gypsum (CaSO4·2H2O)) — mineral

Satin Spar (Selenite)

Gypsum (CaSO4·2H2O)

mineral
Shungite (Shungite (carbon-rich Precambrian mineraloid)) — mineral

Shungite

Shungite (carbon-rich Precambrian mineraloid)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Banded Flint (Chert) (Silicon Dioxide (SiO2)) — sedimentary

Banded Flint (Chert)

Silicon Dioxide (SiO2)

sedimentary
Carnelian (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian

Carnelian (Silicon Dioxide - SiO2)

mineral
Yellow Jasper (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

sedimentary
Carnelian (Carnelian (SiO2 - Chalcedony colored by Iron Oxide)) — mineral

Carnelian

Carnelian (SiO2 - Chalcedony colored by Iron Oxide)

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

Clear Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary
Jasper and Quartz River Cobble (Silicon Dioxide (SiO2) with Hematite inclusions) — Sedimentary / Metamorphic

Jasper and Quartz River Cobble

Silicon Dioxide (SiO2) with Hematite inclusions

Sedimentary / Metamorphic
Red Jasper (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

sedimentary
Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

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

Clear Quartz

Silicon Dioxide (SiO2)

Mineral
Grey Chalcedony (Silicon Dioxide (SiO2)) — mineral

Grey Chalcedony

Silicon Dioxide (SiO2)

mineral
Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

sedimentary
Almandine Garnet (Almandine [Fe3Al2(SiO4)3]) — mineral

Almandine Garnet

Almandine [Fe3Al2(SiO4)3]

mineral
Quartz Pebble (likely Chalcedony or Quartzite) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (likely Chalcedony or Quartzite)

Silicon Dioxide (SiO2)

mineral
Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

mineral
Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

mineral
Chert (Jasper/Chalcedony variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Chalcedony variety)

Microcrystalline Quartz (SiO2)

sedimentary
Psilomelane (Manganese Ore) (Psilomelane (Ba,H2O)2Mn5O10) — mineral

Psilomelane (Manganese Ore)

Psilomelane (Ba,H2O)2Mn5O10

mineral
Iceland Spar (Optical Calcite) (Calcite (CaCO3)) — mineral

Iceland Spar (Optical Calcite)

Calcite (CaCO3)

mineral
Chert (Chert / Flint Variety) (Microcrystalline / Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chert / Flint Variety)

Microcrystalline / Cryptocrystalline Quartz (SiO2)

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

Agate (Nodule/Chert)

Silicon Dioxide (SiO2)

sedimentary
Carnelian (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian

Carnelian (Silicon Dioxide - SiO2)

mineral
Pyrite (Fool's Gold) in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold) in Matrix

Iron Sulfide (FeS2)

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

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

mineral
River Rock (Basalt/Greywacke) (Aphanitic Basalt or Lithic Sandstone (Greywacke)) — igneous

River Rock (Basalt/Greywacke)

Aphanitic Basalt or Lithic Sandstone (Greywacke)

igneous
Caribbean Calcite (Calcium Carbonate with Aragonite (CaCO3)) — mineral

Caribbean Calcite

Calcium Carbonate with Aragonite (CaCO3)

mineral
Almandine Garnet in Schist (Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist) — metamorphic

Almandine Garnet in Schist

Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist

metamorphic
Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

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

Fancy Jasper

Silicon Dioxide (SiO₂)

sedimentary
Chert (vuggy/nodular) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (vuggy/nodular)

Microcrystalline Quartz (SiO2)

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

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

sedimentary