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

Quartz with Tourmaline (Silicon Dioxide with complex boro-silicate (Quartz: SiO2)) — mineral

Quartz with Tourmaline

Silicon Dioxide with complex boro-silicate (Quartz: SiO2)

Wavellite with Quartz (Al3(PO4)2(OH,F)3 & SiO2) — mineral

Wavellite with Quartz

Al3(PO4)2(OH,F)3 & SiO2

Fossil Shark Tooth (Chondrichthyes (Class)) — fossil

Fossil Shark Tooth

Chondrichthyes (Class)

Dyed Selenite (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Dyed Selenite

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Chalcopyrite on Quartz (CuFeS2 (Chalcopyrite) with SiO2 (Quartz)) — mineral

Chalcopyrite on Quartz

CuFeS2 (Chalcopyrite) with SiO2 (Quartz)

Geode (Quartz / Chalcedony nodule) — sedimentary

Geode

Quartz / Chalcedony nodule

Chalcedony with Quartz (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Quartz

Silicon Dioxide (SiO2)

Epidote (Epidote (Ca2(Al, Fe)3(SiO4)3(OH))) — mineral

Epidote

Epidote (Ca2(Al, Fe)3(SiO4)3(OH))

Quartz with Tourmaline Inclusions (Silicon Dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)) — mineral

Quartz with Tourmaline Inclusions

Silicon Dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)

Lake Superior Agate (Silicon Dioxide (Chalcedony / Quartz, SiO2)) — sedimentary

Lake Superior Agate

Silicon Dioxide (Chalcedony / Quartz, SiO2)

Moqui Marble (Hematite-Goethite Concretion) — mineral

Moqui Marble

Hematite-Goethite Concretion

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Lake Superior Agate (Silicon Dioxide (Chalcedony variety)) — gemstone

Lake Superior Agate

Silicon Dioxide (Chalcedony variety)

Peridot (Olivine ((Mg,Fe)2SiO4)) — gemstone

Peridot

Olivine ((Mg,Fe)2SiO4)

Native Copper in Basalt (Cu) — mineral

Native Copper in Basalt

Cu

Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Pyrite in Quartz (Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Chrysocolla in Chalcedony (Gem Silica) (Hydrated copper phyllosilicate and silicon dioxide (SiO2 with (Cu,Al)2H2Si2O5(OH)4)) — mineral

Chrysocolla in Chalcedony (Gem Silica)

Hydrated copper phyllosilicate and silicon dioxide (SiO2 with (Cu,Al)2H2Si2O5(OH)4)

Chevron Amethyst (Silicon Dioxide (Quartz variety), SiO2) — mineral

Chevron Amethyst

Silicon Dioxide (Quartz variety), SiO2

Tiger's Eye (Silicon dioxide with crocidolite inclusions (SiO2)) — mineral

Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

Quartz Crystal in Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal in Matrix

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Limonite and Goethite Iron Ore (Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite and Goethite Iron Ore

Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Agated Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Agated Chert

Microcrystalline Quartz (SiO2)

Iron-Stained Quartz (Red Quartz) (Silicon Dioxide (SiO2) with Hematite/Limonite inclusions) — mineral

Iron-Stained Quartz (Red Quartz)

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

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

Agate (or Chalcedony pebble)

Silicon Dioxide (SiO2)

Strawberry Quartz (Silicon Dioxide (SiO2) with hematite or goethite inclusions) — mineral

Strawberry Quartz

Silicon Dioxide (SiO2) with hematite or goethite inclusions

Amethyst (Super Seven / Melody's Stone Variety) (Silicon Dioxide (SiO2) with trace impurities including Iron) — mineral

Amethyst (Super Seven / Melody's Stone Variety)

Silicon Dioxide (SiO2) with trace impurities including Iron

Amethyst (Rough) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Rough)

Silicon Dioxide (SiO2) with iron impurities

Quartz Druzy on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Bicolor or Tricolor Tourmaline (Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)) — mineral

Bicolor or Tricolor Tourmaline

Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)

Prehnite (Ca2Al2Si3O10(OH)2) — mineral

Prehnite

Ca2Al2Si3O10(OH)2

Peacock Ore (Bornite or Chalcopyrite) (Bornite (Cu5FeS4) or Acid-Washed Chalcopyrite (CuFeS2)) — mineral

Peacock Ore (Bornite or Chalcopyrite)

Bornite (Cu5FeS4) or Acid-Washed Chalcopyrite (CuFeS2)

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Geode (Unopened) (Silicon dioxide with various inclusions (SiO2)) — sedimentary

Geode (Unopened)

Silicon dioxide with various inclusions (SiO2)

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

Malachite and Azurite on Matrix

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

Precious Opal in Matrix (Hydrated Silica (SiO2·nH2O)) — mineral

Precious Opal in Matrix

Hydrated Silica (SiO2·nH2O)

Cat's Eye Chrysoberyl (Chrysoberyl (BeAl2O4)) — mineral

Cat's Eye Chrysoberyl

Chrysoberyl (BeAl2O4)

Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)