Rock Identifier

Category

Minerals

Browse minerals specimens identified by the Rock Identifier community.

Learn about Minerals in the encyclopedia

Glauconite

Glauconite

Halite

Halite

Hutcheonite

Hutcheonite

Sperrylite

Sperrylite

Baddeleyite

Baddeleyite

Brookite

Brookite

Anatase

Anatase

Talc

Talc

Euxenite

Euxenite

Eltyubyuite

Eltyubyuite

Dolomite

Dolomite

Buergerite

Buergerite

Chert (Flint) (Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (Flint)

Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)

Chert (Jasper/Flint variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Chert (variably called Jasper or Agate) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (variably called Jasper or Agate)

Microcrystalline Quartz (SiO2)

Ferruginous Sandstone (Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)) — sedimentary

Ferruginous Sandstone

Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)

Chert (specifically Flint or Gray Chert) (Silicon Dioxide (Microcrystalline Quartz), SiO2) — sedimentary

Chert (specifically Flint or Gray Chert)

Silicon Dioxide (Microcrystalline Quartz), SiO2

Ferruginous Sandstone (Ferruginous Clastic Sedimentary Rock) — sedimentary

Ferruginous Sandstone

Ferruginous Clastic Sedimentary Rock

Zebra Jasper (Jasper (variety of Quartz/Chalcedony), SiO2) — sedimentary

Zebra Jasper

Jasper (variety of Quartz/Chalcedony), SiO2

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

Chert / Jasper

Microcrystalline Quartz (SiO2)

Jadeite (Jadeite (NaAlSi2O6)) — metamorphic

Jadeite

Jadeite (NaAlSi2O6)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chert / Chalcedony Nodules (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert / Chalcedony Nodules

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Moonstone (Rainbow Moonstone) (Labradorite (White Labradorite) - (Na,Ca)(Al,Si)4O8) — mineral

Moonstone (Rainbow Moonstone)

Labradorite (White Labradorite) - (Na,Ca)(Al,Si)4O8

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

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

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Mahogany Obsidian (Volcanic Glass (predominantly SiO2 with Fe2O3 inclusions)) — igneous

Mahogany Obsidian

Volcanic Glass (predominantly SiO2 with Fe2O3 inclusions)

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

Quartz Pebble (Chalcedony/Agate) (Silicon Dioxide (SiO2)) — Mineral

Quartz Pebble (Chalcedony/Agate)

Silicon Dioxide (SiO2)

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Chert (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert

Cryptocrystalline Silica (SiO2)

Lapis Lazuli (Na8[Al6Si6O24]n(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

Quartz (Iron-Stained Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained Quartz Pebble)

Silicon Dioxide (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartz (Quartzite) (Silicon Dioxide (SiO2)) — metamorphic

Quartz (Quartzite)

Silicon Dioxide (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Ferruginous Quartz (Stained Quartz) (Silicon Dioxide (SiO2) with secondary Iron Oxide inclusions (Limonite/Hematite)) — mineral

Ferruginous Quartz (Stained Quartz)

Silicon Dioxide (SiO2) with secondary Iron Oxide inclusions (Limonite/Hematite)

Chrysocolla in Matrix (Hydrated copper silicates (Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O))) — mineral

Chrysocolla in Matrix

Hydrated copper silicates (Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O))

Gneiss with Quartz Vein (Gneiss containing Quartz (SiO2) filler) — metamorphic

Gneiss with Quartz Vein

Gneiss containing Quartz (SiO2) filler

Multi-gemstone Quartz and Fluorite Bracelet (Silicon Dioxide (SiO2) and Calcium Fluoride (CaF2)) — mineral

Multi-gemstone Quartz and Fluorite Bracelet

Silicon Dioxide (SiO2) and Calcium Fluoride (CaF2)

Pink Granite Gneiss (Granitic Gneiss) — metamorphic

Pink Granite Gneiss

Granitic Gneiss

Granite Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Granite Gneiss

Gneiss (High-grade metamorphic rock)

Granodiorite (Granodiorite (intermediate intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (intermediate intrusive igneous rock)

Eudialyte (Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)) — mineral

Eudialyte

Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)

Diorite (River Pebble) (Intermediate Phaneritic Igneous Rock) — igneous

Diorite (River Pebble)

Intermediate Phaneritic Igneous Rock

Granite Gneiss (Gneiss (Polymetamorphic Quartz-Feldspar-Mica rock)) — metamorphic

Granite Gneiss

Gneiss (Polymetamorphic Quartz-Feldspar-Mica rock)

Halite (Rock Salt) (Halite (Sodium Chloride, NaCl)) — mineral

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

Granodiorite (Granodiorite (containing quartz, plagioclase, and biotite/hornblende)) — igneous

Granodiorite

Granodiorite (containing quartz, plagioclase, and biotite/hornblende)

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Eudialyte (Na15Ca6Fe3Zr3Si26O72(OH,Cl)2 (Eudialyte Group)) — mineral

Eudialyte

Na15Ca6Fe3Zr3Si26O72(OH,Cl)2 (Eudialyte Group)

Banded Iron Formation (BIF) (Banded Iron Formation (Fe2O3 + SiO2)) — sedimentary

Banded Iron Formation (BIF)

Banded Iron Formation (Fe2O3 + SiO2)

Schist (Biotite Schist) (Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)) — metamorphic

Schist (Biotite Schist)

Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)