Rock Identifier

Category

Mineral (Specifically A Mineraloid)

Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.

Learn about Mineral (Specifically A Mineraloid) in the encyclopedia

Shungite

Anatase

Sperrylite

Olenite

Buergerite

Hutcheonite

Celsian

Coal

Glauconite

Rock Salt

Baddeleyite

Talc

Puddingstone (specifically Gowganda Tillite or St. Joseph Island Puddingstone) (Jasper Conglomerate) — sedimentary

Puddingstone (specifically Gowganda Tillite or St. Joseph Island Puddingstone)

Jasper Conglomerate

Chert (specifically Flint or Common Opal fragment) (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert (specifically Flint or Common Opal fragment)

Cryptocrystalline Silica (SiO2)

Chert (specifically River Stone / Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically River Stone / Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (specifically Yellow/Common Opal or Jasper mixture) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Yellow/Common Opal or Jasper mixture)

Silicon Dioxide (SiO2)

Chert (specifically Chalcedony or Flint variation) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Chalcedony or Flint variation)

Microcrystalline Quartz (SiO2)

Chert (specifically Flint or Chalcedony nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Chalcedony nodule)

Microcrystalline Quartz (SiO2)

Chert (specifically Yellow Jasper/Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

Limestone (specifically Bituminous or Carbonaceous Limestone) (Calcium Carbonate (CaCO3) with Organic Impurities) — sedimentary

Limestone (specifically Bituminous or Carbonaceous Limestone)

Calcium Carbonate (CaCO3) with Organic Impurities

Limestone (specifically Iron-stained or Argillaceous Limestone) (Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities) — sedimentary

Limestone (specifically Iron-stained or Argillaceous Limestone)

Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities

Jasper (specifically Red or Brecciated Jasper variant) (Jasper (Microcrystalline Quartz - SiO2)) — sedimentary

Jasper (specifically Red or Brecciated Jasper variant)

Jasper (Microcrystalline Quartz - SiO2)

Limestone (specifically Grainstone or Micrite) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (specifically Grainstone or Micrite)

Calcium Carbonate (CaCO3)

Banded Agate (specifically Lake Superior Agate or similar) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Banded Agate (specifically Lake Superior Agate or similar)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Belemnite (Fossilized Rostrum) (Belemnitida (order), specifically Neohibolites or similar genera depending on age) — sedimentary

Belemnite (Fossilized Rostrum)

Belemnitida (order), specifically Neohibolites or similar genera depending on age

Chert (specifically Flint or Novaculite variant) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (specifically Flint or Novaculite variant)

Chert (Microcrystalline Quartz, SiO2)

Fossil Coral (Coral Limestone (a type of biogenic sedimentary rock)) — Sedimentary

Fossil Coral

Coral Limestone (a type of biogenic sedimentary rock)

Limestone (specifically Fossiliferous or Crinoidal Limestone) (Calcium Carbonate (CaCO3) - Calcite Rock) — sedimentary

Limestone (specifically Fossiliferous or Crinoidal Limestone)

Calcium Carbonate (CaCO3) - Calcite Rock

Gemstone Ring (Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)) — gemstone

Gemstone Ring

Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)

Unknown Rock Fragment (Unknown) — unknown

Unknown Rock Fragment

Unknown

Nephrite Jade (Nephrite) — Mineral/Rock

Nephrite Jade

Nephrite

Kidney Stone (Calculus (Calcium oxalate/Calcium phosphate)) — mineral

Kidney Stone

Calculus (Calcium oxalate/Calcium phosphate)

Azurite Malachite (Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)) — mineral

Azurite Malachite

Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)

Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color) (Calcite) — Mineral

Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)

Calcite

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Clear Quartz (SiO2 (Silicon Dioxide)) — gemstone

Clear Quartz

SiO2 (Silicon Dioxide)

Quartz (Smoky/Brown variety) (Silicon dioxide (SiO2)) — mineral

Quartz (Smoky/Brown variety)

Silicon dioxide (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Snowflake Obsidian (Obsidian with Cristobalite inclusions) — igneous

Snowflake Obsidian

Obsidian with Cristobalite inclusions

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Dyed Quartz Geode (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Rock Specimen (Unclassified rock specimen) — sedimentary

Rock Specimen

Unclassified rock specimen

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Painted Rock / Geode Specimen (Silicon Dioxide with artificial pigment coating) — mineral

Painted Rock / Geode Specimen

Silicon Dioxide with artificial pigment coating

Quartz in Matrix (Lepidolite or Quartzite) (Silicon Dioxide (SiO2) with host rock) — mineral

Quartz in Matrix (Lepidolite or Quartzite)

Silicon Dioxide (SiO2) with host rock

Quartz with Mica (Muscovite/Biotite) (Silicon Dioxide (SiO2) with Phyllosilicate inclusions) — mineral

Quartz with Mica (Muscovite/Biotite)

Silicon Dioxide (SiO2) with Phyllosilicate inclusions

Quartz with Mica (Silicon Dioxide (Quartz, SiO2) with Muscovite/Biotite Mica) — mineral

Quartz with Mica

Silicon Dioxide (Quartz, SiO2) with Muscovite/Biotite Mica

Selenite / Gypsum (Gypsum (CaSO4·2H2O)) — Mineral

Selenite / Gypsum

Gypsum (CaSO4·2H2O)

Note regarding baguette production (not a rock) (Digital text image - Somali language) — not a rock

Note regarding baguette production (not a rock)

Digital text image - Somali language

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Feldspar (Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)) — mineral

Feldspar

Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky Quartz/Yellow Quartz

Silicon Dioxide (SiO2)