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

Limonite with Gossan / Iron Ore (Hydrated iron oxide-hydroxide, approximately FeO(OH)·nH2O) — mineral

Limonite with Gossan / Iron Ore

Hydrated iron oxide-hydroxide, approximately FeO(OH)·nH2O

Blue Topaz (Al2SiO4(F,OH)2) — gemstone

Blue Topaz

Al2SiO4(F,OH)2

Blue Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Olivine (Peridot) (Magnesium Iron Silicate (Mg, Fe)2SiO4) — Mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Limonite with Quartz (Hydrated Iron Oxide Hydroxide with Silicon Dioxide (FeO(OH)·nH2O + SiO2)) — mineral

Limonite with Quartz

Hydrated Iron Oxide Hydroxide with Silicon Dioxide (FeO(OH)·nH2O + SiO2)

Quartz with Iron Staining (Silicon Dioxide (SiO2) with Goethite/Limonite inclusions) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Goethite/Limonite inclusions

Kidney Stone (Urolith / Calcium Oxalate Stone) (Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)) — mineral

Kidney Stone (Urolith / Calcium Oxalate Stone)

Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)

Emerald (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald

Beryl (Be3Al2(SiO3)6)

Quartz with Mineral Inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Citrine (Yellow Quartz) (Silicon Dioxide (SiO2)) — mineral

Citrine (Yellow Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon dioxide (SiO2)) — Mineral

Smoky Quartz

Silicon dioxide (SiO2)

Limonite (FeO(OH)•nH2O) — mineral

Limonite

FeO(OH)•nH2O

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Copper Ore / Altered Granodiorite (Cupriferous rock with silicate gangue) — mineral

Copper Ore / Altered Granodiorite

Cupriferous rock with silicate gangue

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Muscovite (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

KAl2(AlSi3O10)(OH)2

Calcite (Calcite (Mineral; CaCO₃)) — Mineral

Calcite

Calcite (Mineral; CaCO₃)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Silver (Ag (Native Silver)) — mineral

Silver

Ag (Native Silver)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Black Onyx and Mother of Pearl (Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)) — mineral

Black Onyx and Mother of Pearl

Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)

Vanadinite (Pb5(VO4)3Cl) — mineral

Vanadinite

Pb5(VO4)3Cl

Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Satin Spar (often sold as Selenite) (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar (often sold as Selenite)

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Granite (Granite) — igneous

Granite

Granite

Amethyst (Quartz (SiO2)) — mineral

Amethyst

Quartz (SiO2)

Agate (Agate (Chalcedony), SiO2) — Mineral

Agate

Agate (Chalcedony), SiO2

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Red Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Purple Chalcedony (Silicon Dioxide (SiO2)) — mineral

Purple Chalcedony

Silicon Dioxide (SiO2)

Amethyst Cluster (Silicon Dioxide (Quartz variety: Amethyst) - SiO2) — mineral

Amethyst Cluster

Silicon Dioxide (Quartz variety: Amethyst) - SiO2

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

Peridot

Olivine ((Mg,Fe)2SiO4)

Limonite Geode / Ironstone Nodule (Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite Geode / Ironstone Nodule

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

Copper Ore (Malachite, Azurite, and Chalcopyrite in Host Rock) (Copper-bearing polymetallic mineral aggregate (Cu-minerals)) — mineral

Copper Ore (Malachite, Azurite, and Chalcopyrite in Host Rock)

Copper-bearing polymetallic mineral aggregate (Cu-minerals)

Quartz with Associated Minerals (Silicon Dioxide (SiO2)) — mineral

Quartz with Associated Minerals

Silicon Dioxide (SiO2)

Quartz with Tourmaline and Iron Staining (Silicon Dioxide (SiO2) with accessory tourmaline and limonite) — mineral

Quartz with Tourmaline and Iron Staining

Silicon Dioxide (SiO2) with accessory tourmaline and limonite

Lake Superior Agate (Agate (Cryptocrystalline variety of Quartz, SiO2)) — mineral

Lake Superior Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Citrine (SiO2 (Silicon Dioxide)) — mineral

Citrine

SiO2 (Silicon Dioxide)