Rock Identifier

Category

Mineral (Or Mineraloid If Microcrystalline)

Browse mineral (or mineraloid if microcrystalline) specimens identified by the Rock Identifier community.

Learn about Mineral (Or Mineraloid If Microcrystalline) in the encyclopedia

Shungite

Flower Jasper

Feather Jasper

Dendritic Jasper

Blue Jasper

Sperrylite

Brookite

Leopard Skin Jasper

Leopard Skin Jasper

Banalsite

Black Shale

Garnierite

Wulfenite

Veined Sandstone with Calcite Veins (Sedimentary sandstone with hydrothermal/mineral veins) — sedimentary

Veined Sandstone with Calcite Veins

Sedimentary sandstone with hydrothermal/mineral veins

Banded agate geode fragment (Microcrystalline quartz (chalcedony), SiO₂) — mineral

Banded agate geode fragment

Microcrystalline quartz (chalcedony), SiO₂

Tumbled red jasper (Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions) — mineral

Tumbled red jasper

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

Limonite (Iron Ore) (Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)

Polished brown-and-cream jasper (Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions) — mineral

Polished brown-and-cream jasper

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

Limonite Concretion (FeO(OH)qnH2O (Hydrated iron(III) oxide-hydroxide mixture)) — sedimentary

Limonite Concretion

FeO(OH)qnH2O (Hydrated iron(III) oxide-hydroxide mixture)

Tree Agate (Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions) — sedimentary

Tree Agate

Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions

Polished brecciated jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide coloration and possible breccia fragments) — mineral

Polished brecciated jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide coloration and possible breccia fragments

Copper Ore (with Malachite/Chrysocolla and Iron Oxides) (Secondary Copper Minerals (Cu2(CO3)(OH)2 / (Cu,Al)2H2Si2O5(OH)4·nH2O)) — mineral

Copper Ore (with Malachite/Chrysocolla and Iron Oxides)

Secondary Copper Minerals (Cu2(CO3)(OH)2 / (Cu,Al)2H2Si2O5(OH)4·nH2O)

Shale (Argillite / Shale) — sedimentary

Shale

Argillite / Shale

Greenstone / Greenschist (Greenschist facies metamorphic rock (composed primarily of chlorite, actinolite, and epidote)) — metamorphic

Greenstone / Greenschist

Greenschist facies metamorphic rock (composed primarily of chlorite, actinolite, and epidote)

Uncertain dark gray-brown rock fragment (Indeterminate; possibly weathered chert, serpentine, or iron-stained quartzite) — mineral

Uncertain dark gray-brown rock fragment

Indeterminate; possibly weathered chert, serpentine, or iron-stained quartzite

Tumbled yellow jasper (Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions) — mineral

Tumbled yellow jasper

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

Limonite with Hematite (Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)) — mineral

Limonite with Hematite

Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)

Polished jasper pebble (Jasper, an opaque microcrystalline variety of quartz (SiO₂), with possible iron-oxide and other mineral inclusions) — mineral

Polished jasper pebble

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with possible iron-oxide and other mineral inclusions

Concretion (Sedimentary Concretion (Ironstone / Calcite Concretion)) — sedimentary

Concretion

Sedimentary Concretion (Ironstone / Calcite Concretion)

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

Chert (or Jasper)

Microcrystalline Quartz (SiO2)

Druzy quartz on matrix (Quartz (SiO₂), microcrystalline crystal coating) — mineral

Druzy quartz on matrix

Quartz (SiO₂), microcrystalline crystal coating

Iron-rich chert or jasper (Microcrystalline quartz (SiO₂), variably stained by iron oxides/hydroxides) — sedimentary

Iron-rich chert or jasper

Microcrystalline quartz (SiO₂), variably stained by iron oxides/hydroxides

Red Jasper with Quartz Veining (Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions) — sedimentary

Red Jasper with Quartz Veining

Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions

Fossilized Shark Tooth (Fragment) (Elasmobranchii gen. et sp. indet.) — fossil

Fossilized Shark Tooth (Fragment)

Elasmobranchii gen. et sp. indet.

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

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Polished/tumbled jasper (Jasper, microcrystalline quartz (SiO₂) with iron-oxide and other mineral impurities) — mineral

Polished/tumbled jasper

Jasper, microcrystalline quartz (SiO₂) with iron-oxide and other mineral impurities

Red Jasper (Polished Point Pendant) (Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)) — mineral

Red Jasper (Polished Point Pendant)

Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)

Yellow Chalcedony (Carnelian / Agate Pebbles) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (Carnelian / Agate Pebbles)

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Green Aventurine (Quartz (SiO2) with fuchsite inclusions) — mineral

Green Aventurine

Quartz (SiO2) with fuchsite inclusions

Chert (Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline quartz (SiO2)

Chert (specifically Flint or Jasper variant) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert Nodules (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodules

Microcrystalline Quartz (SiO2)

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

Chert (Mudstone)

Microcrystalline Quartz (SiO2)

Chert (Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline quartz (SiO2)

Banded Agate (Silk Agate or Maligano Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Banded Agate (Silk Agate or Maligano Jasper variant)

Silicon Dioxide (SiO2)

Chert (Flint) with Glauconite (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint) with Glauconite

Microcrystalline Quartz (SiO2)

Chert (Flint) Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint) Pebble

Microcrystalline Quartz (SiO2)

Polished orbicular jasper (likely ocean jasper) (Orbicular jasper; chiefly microcrystalline quartz and chalcedony (SiO₂), with assorted mineral inclusions) — mineral

Polished orbicular jasper (likely ocean jasper)

Orbicular jasper; chiefly microcrystalline quartz and chalcedony (SiO₂), with assorted mineral inclusions

White quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

White quartz pebble

Quartz (silicon dioxide, SiO₂)

Chert (Septarian or Nodular variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Septarian or Nodular variety)

Microcrystalline Quartz (SiO2)

Onyx (Chalcedony (SiO2)) — mineral

Onyx

Chalcedony (SiO2)