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.

Greenstone / Diorite (Intermediate plutonic igneous rock) — igneous

Greenstone / Diorite

Intermediate plutonic igneous rock

igneous
Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

igneous
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Amygdaloidal Basalt (Vesicular Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)) — igneous

Amygdaloidal Basalt

Vesicular Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)

igneous
River Cobble (Gneiss/Schist mix) (Foliated Metamorphic Rock (Gneissic/Schistose)) — metamorphic

River Cobble (Gneiss/Schist mix)

Foliated Metamorphic Rock (Gneissic/Schistose)

metamorphic
Ferruginous Sandstone (Arenite with Iron Oxide matrix (Fe2O3)) — sedimentary

Ferruginous Sandstone

Arenite with Iron Oxide matrix (Fe2O3)

sedimentary
Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

mineral
Agate (Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony) — Mineral

Agate

Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony

Mineral
Geode (Unopened) (Siliceous Concretion / Geode) — sedimentary

Geode (Unopened)

Siliceous Concretion / Geode

sedimentary
Schist with Quartz Vein (Mica Schist with Crystalline Quartz (SiO2)) — metamorphic

Schist with Quartz Vein

Mica Schist with Crystalline Quartz (SiO2)

metamorphic
Septarian Nodule (Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)) — sedimentary

Septarian Nodule

Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)

sedimentary
Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

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

igneous
Carnelian Agate (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide impurities

mineral
Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)

mineral
Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

mineral
Rose Quartz (Silicon Dioxide with trace elements (SiO2 + Ti, Fe, or Mn)) — mineral

Rose Quartz

Silicon Dioxide with trace elements (SiO2 + Ti, Fe, or Mn)

mineral
Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral
Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

igneous
Quartz in Matrix (possibly with Biotite or Hornblende) (Quartz (Silicon Dioxide, SiO2) in Granitic Matrix) — igneous

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

igneous
Amethyst (Agate/Chalcedony variety) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Agate/Chalcedony variety)

Silicon Dioxide (SiO2) with iron impurities

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

Olivine (Peridot in gem form)

Magnesium Iron Silicate (Mg,Fe)2SiO4

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

Quartz Geode

Silicon Dioxide (SiO2)

mineral
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Diamond (Carbon (C)) — Mineral

Diamond

Carbon (C)

Mineral
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Agate (specifically a small Chalcedony nodule) (Agate (Cryptocrystalline variety of Quartz, SiO2)) — mineral

Agate (specifically a small Chalcedony nodule)

Agate (Cryptocrystalline variety of Quartz, SiO2)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Dalmation Stone (Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)) — igneous

Dalmation Stone

Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)

igneous
Moss Agate (Chalcedony (Silicon Dioxide / SiO2)) — mineral

Moss Agate

Chalcedony (Silicon Dioxide / SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Chrysocolla in Matrix (Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla in Matrix

Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O

mineral
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Okenite (in Zeolite matrix) (Okenite (CaSi2O5 · 2H2O)) — mineral

Okenite (in Zeolite matrix)

Okenite (CaSi2O5 · 2H2O)

mineral
Vesicular Basalt (Basalt with secondary mineral infilling (Amygdaloidal Basalt)) — igneous

Vesicular Basalt

Basalt with secondary mineral infilling (Amygdaloidal Basalt)

igneous
Greenstone / Nephrite Jade (Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

Greenstone / Nephrite Jade

Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)

metamorphic
Fire Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Fire Opal

Hydrated Silica (SiO2·nH2O)

mineral