Rock Identifier

Category

Mineral, Specifically A Rock Fragment

Browse mineral, specifically a rock fragment specimens identified by the Rock Identifier community.

Yellow Ochre / Limonite (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

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

mineral
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Leopard Skin Jasper (Jasper (Silicon Dioxide with impurities), SiO2) — sedimentary

Leopard Skin Jasper

Jasper (Silicon Dioxide with impurities), SiO2

sedimentary
Marble (Recrystallized Calcite (CaCO3) Rock) — metamorphic

Marble

Recrystallized Calcite (CaCO3) Rock

metamorphic
Fossiliferous Limestone (Coquina / Shell Bed) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (Coquina / Shell Bed)

Biogenic Limestone (Calcium Carbonate, CaCO3)

sedimentary
Epidote (Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

metamorphic
Quartz (Milky or Cloudy variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Cloudy variety)

Silicon Dioxide (SiO2)

mineral
Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Unakite (Unakite (Metasomatized Granite)) — metamorphic

Unakite

Unakite (Metasomatized Granite)

metamorphic
Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Vesicular Basalt with Lichen (Vesicular Basalt) — igneous

Vesicular Basalt with Lichen

Vesicular Basalt

igneous
Sandstone Concretion (Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)) — sedimentary

Sandstone Concretion

Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)

sedimentary
Quartzite with Iron Mineral Banding (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) staining) — metamorphic

Quartzite with Iron Mineral Banding

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) staining

metamorphic
Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Quartz Vein in Host Rock (Silicon Dioxide (SiO2) in matrix) — Mineral in Metamorphic/Igneous Host

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in matrix

Mineral in Metamorphic/Igneous Host
Granite (Phaneritic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

igneous
Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

sedimentary
Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

mineral
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)

mineral
Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

mineral
White Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

White Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Ferruginous Quartz (Silicon Dioxide (SiO2) with Limonite/Hematite inclusions) — Mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Mineral
Fluorite (Fluorite (Calcium Fluoride - CaF2)) — mineral

Fluorite

Fluorite (Calcium Fluoride - CaF2)

mineral
Oolitic Limestone (Oolitic Limestone (CaCO3)) — sedimentary

Oolitic Limestone

Oolitic Limestone (CaCO3)

sedimentary
Azurite and Malachite on Matrix (Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2) — mineral

Azurite and Malachite on Matrix

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2

mineral
Basalt with Quartz/Calcite Veins (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt with Quartz/Calcite Veins

Basalt (Aphanitic Mafic Igneous Rock)

igneous
Clear Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Crystalline Silicon Dioxide (SiO2)

mineral
Quartz Geode (Crystalline Silicon Dioxide (SiO2) within a nodule) — sedimentary

Quartz Geode

Crystalline Silicon Dioxide (SiO2) within a nodule

sedimentary
Moonstone (Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)) — mineral

Moonstone

Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)

mineral
Gossan (Iron Hat) (Limonitic Gossan (predominantly FeO(OH)·nH2O)) — igneous/metamorphic derivative

Gossan (Iron Hat)

Limonitic Gossan (predominantly FeO(OH)·nH2O)

igneous/metamorphic derivative
Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Basalt with Vesicular Surface (Basalt (Mafic Extrusive)) — igneous

Basalt with Vesicular Surface

Basalt (Mafic Extrusive)

igneous
Calligraphy Stone (Mariam Jasper (Fossiliferous Limestone with Hematite and Iron)) — sedimentary

Calligraphy Stone

Mariam Jasper (Fossiliferous Limestone with Hematite and Iron)

sedimentary
Chert (Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2)

sedimentary
Rough Tanzanite (Zoisite (Ca2Al3(SiO4)3(OH))) — mineral

Rough Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

mineral
Iron-stained Quartz (Gossan/Limonite-coated Quartz) (Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)) — mineral

Iron-stained Quartz (Gossan/Limonite-coated Quartz)

Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)

mineral
Granite (Weathered) (Phaneritic Felsic Igneous Rock) — Igneous

Granite (Weathered)

Phaneritic Felsic Igneous Rock

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

Granite

Phaneritic Igneous Rock (Granite)

igneous
Serpentine (Nephrite-like River Cobble) (Serpentinite (Hydrous Magnesium Iron Silicate)) — metamorphic

Serpentine (Nephrite-like River Cobble)

Serpentinite (Hydrous Magnesium Iron Silicate)

metamorphic
Lapis Lazuli (Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

metamorphic