Rock Identifier

Category

Man Made Material (Metal)

Browse man made material (metal) specimens identified by the Rock Identifier community.

Limonite (vibrant yellowish-brown iron oxide) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (vibrant yellowish-brown iron oxide)

Limonite (FeO(OH)·nH2O)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Anthracite Coal (Anthracite) — sedimentary

Anthracite Coal

Anthracite

Limonite (Iron Ore) (Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O)) — Mineral

Limonite (Iron Ore)

Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O)

Pink Banded Onyx (Mexican Onyx / Calcite) (Calcite (CaCO3) - microcrystalline calcium carbonate) — sedimentary

Pink Banded Onyx (Mexican Onyx / Calcite)

Calcite (CaCO3) - microcrystalline calcium carbonate

Fluorite (Green Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Green Fluorite)

Calcium Fluoride (CaF2)

Sandstone (likely Graywacke or Arkose variant) (Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)) — sedimentary

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)

Quartzite (Meta-quartzite (SiO2)) — metamorphic

Quartzite

Meta-quartzite (SiO2)

Painted Pet Rock (Quartzite/Sandstone base) (Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments) — sedimentary

Painted Pet Rock (Quartzite/Sandstone base)

Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments

Chert (specifically Red Chert/Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Red Chert/Jasper)

Microcrystalline Quartz (SiO2)

Chert (varieties include Flint and Jasper) (Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Chert / Flint (Microcrystalline or cryptocrystalline quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline or cryptocrystalline quartz (SiO2)

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

Agate (Nodule/Chert)

Silicon Dioxide (SiO2)

Diabase (Diabase (also known as Dolerite)) — igneous

Diabase

Diabase (also known as Dolerite)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Pumice (specifically a water-worn, weathered variety) (Vesicular volcanic glass) — igneous

Pumice (specifically a water-worn, weathered variety)

Vesicular volcanic glass

Pink Jade (Dyed Quartzite) (Silicon Dioxide (SiO2) - primarily Quartzite or Quartz) — metamorphic

Pink Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - primarily Quartzite or Quartz

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Breccia (Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)) — sedimentary

Breccia

Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)

Quartz (Milky or Cloudy Quartz) (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz (Milky or Cloudy Quartz)

Quartz (Silicon Dioxide, SiO2)

Bauxite (Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)) — sedimentary

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Diamond (Diamond (C)) — Mineral

Diamond

Diamond (C)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Scoria (Basaltic Lava Rock) (Vesicular Basalt) — igneous

Scoria (Basaltic Lava Rock)

Vesicular Basalt

Granite (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Felsic Igneous Rock (Granite)

Ferruginous Quartz (Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions) — mineral

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions

Coquina (Biogenic Limestone (Coquina)) — sedimentary

Coquina

Biogenic Limestone (Coquina)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

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

Chert / Flint

Silicon Dioxide (SiO2)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Tektite (Indochinite) (Tektite (High-silica natural glass)) — mineraloid / impact glass

Tektite (Indochinite)

Tektite (High-silica natural glass)

mineraloid / impact glass

Sandstone (Red) (Arenite (primarily SiO2 with Iron Oxide staining)) — sedimentary

Sandstone (Red)

Arenite (primarily SiO2 with Iron Oxide staining)

Fossil Shark Tooth (Carcharodon or Carcharias fossil (Vertebrate Fossil)) — sedimentary

Fossil Shark Tooth

Carcharodon or Carcharias fossil (Vertebrate Fossil)

Coral Fossil (Scleractinia) (Scleractinia (Order), primarily CaCO3 (Aragonite or Calcite)) — sedimentary

Coral Fossil (Scleractinia)

Scleractinia (Order), primarily CaCO3 (Aragonite or Calcite)

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions