Rock Identifier

Category

Man Made Byproduct (Non Geological)

Browse man made byproduct (non geological) specimens identified by the Rock Identifier community.

Crushed Limestone (Calcium Carbonate (CaCO3)) — Sedimentary

Crushed Limestone

Calcium Carbonate (CaCO3)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Sandstone (Clastic sedimentary rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite/Arkose)

Obsidian (Volcanic Glass (Amorphous Silica)) — igneous

Obsidian

Volcanic Glass (Amorphous Silica)

Obsidian (Obsidian (Volcanic Glass, primarily SiO2)) — igneous

Obsidian

Obsidian (Volcanic Glass, primarily SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Emerald in Matrix (Beryllium Aluminum Silicate (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Chromium/Vanadium impurities

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Granite (Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).) — igneous

Granite

Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).

Mother of Pearl (Nacre) (Calcium Carbonate (primarily aragonite, with conchiolin)) — Organic Gemstone/Biomineral

Mother of Pearl (Nacre)

Calcium Carbonate (primarily aragonite, with conchiolin)

Organic Gemstone/Biomineral

Gold Ore in Matrix (Native Gold (Au) in Quartz/Limonite host rock) — mineral

Gold Ore in Matrix

Native Gold (Au) in Quartz/Limonite host rock

Snowflake Obsidian (Obsidian (volcanic glass) with Cristobalite inclusions) — igneous

Snowflake Obsidian

Obsidian (volcanic glass) with Cristobalite inclusions

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

N/A (Non-Geological Object) — N/A

N/A (Non-Geological Object)

Obsidian (Volcanic Glass (70% or more SiO2)) — igneous

Obsidian

Volcanic Glass (70% or more SiO2)

Manganese-coated Sandstone (Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)) — sedimentary

Manganese-coated Sandstone

Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)

Native Silver (Silver (Ag)) — mineral

Native Silver

Silver (Ag)

Obsidian (Obsidian (volcanic glass, amorphous silica rich rock)) — Igneous

Obsidian

Obsidian (volcanic glass, amorphous silica rich rock)

Black Obsidian (Volcanic Glass (70–75% SiO2 plus MgO, Fe3O4)) — igneous

Black Obsidian

Volcanic Glass (70–75% SiO2 plus MgO, Fe3O4)

Black Obsidian (Obsidian (Amorphous volcanic glass, SiO2)) — igneous

Black Obsidian

Obsidian (Amorphous volcanic glass, SiO2)

Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2)

Amethyst (Silicon Dioxide (SiO2) with Fe3+ impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with Fe3+ impurities

Obsidian (Volcanic Glass (Amorphous Silicon Dioxide , SiO2)) — igneous

Obsidian

Volcanic Glass (Amorphous Silicon Dioxide , SiO2)

Snowflake Obsidian (Obsidian with Cristobalite inclusions (70–75% SiO2)) — igneous

Snowflake Obsidian

Obsidian with Cristobalite inclusions (70–75% SiO2)

Amber (Resinite / Fossilized Tree Resin) — mineral

Amber

Resinite / Fossilized Tree Resin

US Penny (Cuprum (Copper: Cu) and Zincum (Zinc: Zn) Alloy) — Man-made object (metal alloy)

US Penny

Cuprum (Copper: Cu) and Zincum (Zinc: Zn) Alloy

Man-made object (metal alloy)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Obsidian (Amorphous volcanic glass (primarily SiO2)) — igneous

Obsidian

Amorphous volcanic glass (primarily SiO2)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Snowflake Obsidian (Volcanic glass (SiO2) with Cristobalite (SiO2) inclusions) — igneous

Snowflake Obsidian

Volcanic glass (SiO2) with Cristobalite (SiO2) inclusions

Black Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Metal Alloy (Jewelry) (Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.) — Man-made Material (jewelry, metal alloy)

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Man-made Material (jewelry, metal alloy)

Banded Sandstone (Liesegang Rings) (Sedimentary sandstone with Iron oxide precipitates) — sedimentary

Banded Sandstone (Liesegang Rings)

Sedimentary sandstone with Iron oxide precipitates

Snowflake Obsidian (Vitreous Volcanic Rock (Amorphous Silicate), SiO2) — igneous

Snowflake Obsidian

Vitreous Volcanic Rock (Amorphous Silicate), SiO2

Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Obsidian

Volcanic Glass (SiO2 + impurities)

Granodiorite with Quartz Veining (Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins) — igneous

Granodiorite with Quartz Veining

Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins

Chert (specifically Yellow/Brown Chert or Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Yellow/Brown Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Conglomerate (Conglomerate (Sedimentary Clastic Rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary Clastic Rock)