Rock Identifier

Category

Mineral Health

Browse mineral health specimens identified by the Rock Identifier community.

Learn about Mineral Health in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Gneiss (High-grade Metamorphic Gneiss) — metamorphic

Gneiss

High-grade Metamorphic Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Polished orbicular jasper (likely ocean jasper or brecciated jasper) (Microcrystalline quartz (SiO₂), with iron oxides and accessory chlorite/zeolite minerals) — mineral

Polished orbicular jasper (likely ocean jasper or brecciated jasper)

Microcrystalline quartz (SiO₂), with iron oxides and accessory chlorite/zeolite minerals

Blue Zircon (Zircon (Zirconium Silicate - ZrSiO4)) — gemstone

Blue Zircon

Zircon (Zirconium Silicate - ZrSiO4)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)

Lapis Lazuli ((Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)) — metamorphic

Lapis Lazuli

(Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)

Sandstone (Arenite (SiO2 principal composition)) — sedimentary

Sandstone

Arenite (SiO2 principal composition)

Petrified Wood / Fossilized Wood (Silicified Wood (Silicon Dioxide - SiO2)) — fossil

Petrified Wood / Fossilized Wood

Silicified Wood (Silicon Dioxide - SiO2)

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

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

Epidote

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

Epidote (Epidote (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

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

Epidote

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

Small brown mineral fragment (Unidentified; the image lacks enough detail for a reliable species-level identification) — mineral

Small brown mineral fragment

Unidentified; the image lacks enough detail for a reliable species-level identification

Blue Apatite (Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)) — mineral

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)

Vesicular basalt pebble (Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar, pyroxene, and often olivine) — igneous

Vesicular basalt pebble

Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar, pyroxene, and often olivine

Pegmatitic granite (Coarse-grained granite/pegmatite, chiefly quartz, feldspar, and mica) — igneous

Pegmatitic granite

Coarse-grained granite/pegmatite, chiefly quartz, feldspar, and mica

Limonite Geode / Ironstone Nodule (Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite Geode / Ironstone Nodule

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

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

Limonite (Iron Ore)

FeO(OH)·nH2O

Black Sand (Magnetite Sand) (Magnetite (Fe3O4)) — mineral

Black Sand (Magnetite Sand)

Magnetite (Fe3O4)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Jasper (SiO2 (Cryptocrystalline quartz)) — mineral

Jasper

SiO2 (Cryptocrystalline quartz)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

Limonite (Yellow Ochre)

Hydrated Iron Oxide (FeO(OH)·nH2O)

Limonite and Goethite on Gossan (FeO(OH)·nH2O) — mineral

Limonite and Goethite on Gossan

FeO(OH)·nH2O

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

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Malachite (Copper(II) carbonate hydroxide [Cu2CO3(OH)2]) — mineral

Malachite

Copper(II) carbonate hydroxide [Cu2CO3(OH)2]

Ironstone (Limonite/Hematite) (Ferruginous sedimentary rock (Fe2O3·nH2O / Fe2O3)) — sedimentary

Ironstone (Limonite/Hematite)

Ferruginous sedimentary rock (Fe2O3·nH2O / Fe2O3)

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Peacock Ore (Bornite or Iridescent Chalcopyrite) (Bornite (Cu5FeS4) or Acid-treated Chalcopyrite (CuFeS2)) — mineral

Peacock Ore (Bornite or Iridescent Chalcopyrite)

Bornite (Cu5FeS4) or Acid-treated Chalcopyrite (CuFeS2)

Blue Howlite (Dyed) (Dyed Howlite (Calcium Borosilicate Hydroxide, Ca2B5SiO9(OH)5)) — mineral

Blue Howlite (Dyed)

Dyed Howlite (Calcium Borosilicate Hydroxide, Ca2B5SiO9(OH)5)

Sandstone (Ferruginous) (Arenite (SiO2 based with Fe2O3 banding)) — sedimentary

Sandstone (Ferruginous)

Arenite (SiO2 based with Fe2O3 banding)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Blue Howlite (Dyed) (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

Blue Howlite (Dyed)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Tiger's Eye (Silicon Dioxide (SiO2) with fibrous inclusions) — mineral

Tiger's Eye

Silicon Dioxide (SiO2) with fibrous inclusions

Schist (Schist) — metamorphic

Schist

Schist

Bumblebee Jasper (Anhydrite with Sulfur, Hematite, and Orpiment (SiO2/CaSO4 mixture)) — sedimentary

Bumblebee Jasper

Anhydrite with Sulfur, Hematite, and Orpiment (SiO2/CaSO4 mixture)

Quartz geode (Microcrystalline and crystalline quartz (SiO₂), likely chalcedony-lined geode) — mineral

Quartz geode

Microcrystalline and crystalline quartz (SiO₂), likely chalcedony-lined geode

Pegmatitic granite (likely quartz–feldspar rock) (Granitic pegmatite, composed mainly of quartz (SiO₂) and feldspar) — igneous

Pegmatitic granite (likely quartz–feldspar rock)

Granitic pegmatite, composed mainly of quartz (SiO₂) and feldspar

Blue-gray calcite (likely cleavage specimen) (Calcite, CaCO₃) — mineral

Blue-gray calcite (likely cleavage specimen)

Calcite, CaCO₃

Weathered granite or granitic rock (Granite; chiefly quartz, feldspar, and mica) — igneous

Weathered granite or granitic rock

Granite; chiefly quartz, feldspar, and mica

Pink Granite (Granite (Phaneritic Quartz-Feldspar rock)) — igneous

Pink Granite

Granite (Phaneritic Quartz-Feldspar rock)