Rock Identifier

Category

Synthetic Material (Not A Rock Or Mineral)

Browse synthetic material (not a rock or mineral) specimens identified by the Rock Identifier community.

Sodalite (Sodalite, Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Petrified Wood (Silicified wood (primarily Silicon Dioxide, SiO2)) — sedimentary

Petrified Wood

Silicified wood (primarily Silicon Dioxide, SiO2)

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

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

Rough Diamond (Diamond (Pure Carbon: C)) — mineral

Rough Diamond

Diamond (Pure Carbon: C)

Diamond (set in Gold) (Diamond (pure carbon, C)) — mineral

Diamond (set in Gold)

Diamond (pure carbon, C)

Basalt with Secondary Mineralization (Likely Zeolites or Calcite) (Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)) — igneous

Basalt with Secondary Mineralization (Likely Zeolites or Calcite)

Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)

Petrified Wood (Silicified Fossil) (Silicified Wood (SiO2)) — sedimentary

Petrified Wood (Silicified Fossil)

Silicified Wood (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Granitic Pegmatite (Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)) — Igneous

Granitic Pegmatite

Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz in Limonite-rich Matrix (Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O) — Mineral in Sedimentary/Secondary host

Quartz in Limonite-rich Matrix

Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O

Mineral in Sedimentary/Secondary host

Basalt with Quartz Vein (Basalt (SiO2 vein inclusion)) — igneous

Basalt with Quartz Vein

Basalt (SiO2 vein inclusion)

Quartzite with inclusions (Metamorphic Rock (Mainly SiO2)) — metamorphic

Quartzite with inclusions

Metamorphic Rock (Mainly SiO2)

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

Quartz Geode (Cracked Open) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Geode (Cracked Open)

Quartz (Silicon Dioxide - SiO2)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chrysocolla in Matrix (Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix) — mineral

Chrysocolla in Matrix

Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix

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

Quartz Crystal (Amethyst)

Silicon Dioxide (SiO2)

Chert Geode or Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Geode or Nodule

Microcrystalline Quartz (SiO2)

Banded Sandstone (Liesegang Rings) (Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)) — sedimentary

Banded Sandstone (Liesegang Rings)

Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)

Opalite (Man-made Glass) (Fused glass (typically made of dolomite and metal opacifiers)) — Man-made Material / Glass

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Man-made Material / Glass

Serpentinite (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Quartz Veinated Sandstone or Siltstone (Silicon Dioxide (SiO2) within a clastic sedimentary matrix) — sedimentary

Quartz Veinated Sandstone or Siltstone

Silicon Dioxide (SiO2) within a clastic sedimentary matrix

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

Peridot (Olivine)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)

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

Olivine

(Mg,Fe)2SiO4 (Magnesium Iron Silicate)

Yellow Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Quartz (specifically Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Milky Quartz (Silicon dioxide (SiO2)) — mineral

Milky Quartz

Silicon dioxide (SiO2)

Amygdaloidal Basalt with Quartz/Calcite Inclusions (Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)) — igneous

Amygdaloidal Basalt with Quartz/Calcite Inclusions

Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Limonite Concretion (Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O) — sedimentary

Limonite Concretion

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

Ferruginous Sandstone (Sandstone with Iron Oxide (Limonite/Goethite)) — sedimentary

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Smoky Quartz on Feldspar (Granite Pegmatite) (Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)) — igneous

Smoky Quartz on Feldspar (Granite Pegmatite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)