Rock Identifier

Category

Mineral (Primary Constituent)

Browse mineral (primary constituent) specimens identified by the Rock Identifier community.

Greenschist (Greenschist (Chlorite-actinolite schist)) — metamorphic

Greenschist

Greenschist (Chlorite-actinolite schist)

Yellow Jasper (Silicon Dioxide (SiO2) with high iron inclusion) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with high iron inclusion

Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

Limonite/Goethite nodule (Goethite (FeO(OH)) with Hydrated Iron Oxides) — mineral

Limonite/Goethite nodule

Goethite (FeO(OH)) with Hydrated Iron Oxides

Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

Green Slate (Greenstone) (Metamorphic shale (varied composition)) — metamorphic

Green Slate (Greenstone)

Metamorphic shale (varied composition)

Basalt with Amygdule (Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill) — igneous

Basalt with Amygdule

Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — Mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Dalmatian Stone (Dalmatian Jasper / Feldspathic Igneous Rock) — igneous

Dalmatian Stone

Dalmatian Jasper / Feldspathic Igneous Rock

Dalmatian Stone (Dalmatian Jasper (not a true jasper, typically an igneous perthite)) — igneous

Dalmatian Stone

Dalmatian Jasper (not a true jasper, typically an igneous perthite)

Moqui Marble (Iron Concretion) (Hematite/Goethite Concretion (Fe2O3 / FeO(OH))) — sedimentary

Moqui Marble (Iron Concretion)

Hematite/Goethite Concretion (Fe2O3 / FeO(OH))

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Gold (Gold (Au)) — mineral

Gold

Gold (Au)

Citrine (SiO2 (Silicon Dioxide)) — mineral

Citrine

SiO2 (Silicon Dioxide)

Native Sulfur (Sulfur (S)) — mineral

Native Sulfur

Sulfur (S)

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Epidote with Magnetite/Hematite inclusions (Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides) — mineral

Epidote with Magnetite/Hematite inclusions

Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides

Epidote (Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))) — mineral

Epidote

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Chert / Jasper (Silicon Dioxide (SiO2)) — sedimentary

Chert / Jasper

Silicon Dioxide (SiO2)

Greenstone (Metabasalt / Greenschist facies rock) — metamorphic

Greenstone

Metabasalt / Greenschist facies rock

Greenschist (Greenschist (Chlorite-Epidote-Actinolite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite-Epidote-Actinolite Schist)

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

Sulfur on matrix (Native Sulfur (S8)) — mineral

Sulfur on matrix

Native Sulfur (S8)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Limonite (Ochreous) (FeO(OH)·nH2O (Hydrated Iron Oxide)) — mineral

Limonite (Ochreous)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

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

Lapis Lazuli

Lapis Lazuli (Complex aggregate containing Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Tiger's Eye (Pseudomorph of Quartz (SiO2) after Crocidolite) — mineral

Tiger's Eye

Pseudomorph of Quartz (SiO2) after Crocidolite

Super Seven (Melody Stone) (Quartz with inclusions (Amethyst, Cacoxenite, Goethite, Lepidocrosite, Rutile, Smoky Quartz, and Clear Quartz)) — mineral

Super Seven (Melody Stone)

Quartz with inclusions (Amethyst, Cacoxenite, Goethite, Lepidocrosite, Rutile, Smoky Quartz, and Clear Quartz)

Coprolite (Coprolite) — sedimentary

Coprolite

Coprolite

Green Aventurine (Aventurine Quartz (SiO2 + Fuchsite mica)) — metamorphic

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Goethite pseudomorph after Pyrite (Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)) — mineral

Goethite pseudomorph after Pyrite

Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)

Turquoise (Turquoise, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise, CuAl6(PO4)4(OH)8·4H2O

Sunstone (Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8) — mineral

Sunstone

Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8

Fire Opal in Host Rock (Amorphous Hydrous Silica (SiO2·nH2O)) — mineral

Fire Opal in Host Rock

Amorphous Hydrous Silica (SiO2·nH2O)

Desert Rose (Gypsum/Baryte) (Hydrated Calcium Sulfate (CaSO4·2H2O)) — mineral

Desert Rose (Gypsum/Baryte)

Hydrated Calcium Sulfate (CaSO4·2H2O)

Quartz Geode with Goethite/Hematite (Silicon Dioxide (SiO2) with Iron Oxides) — mineral

Quartz Geode with Goethite/Hematite

Silicon Dioxide (SiO2) with Iron Oxides