Rock Identifier

Category

Mineral_rock

Browse mineral_rock specimens identified by the Rock Identifier community.

Learn about Mineral_rock in the encyclopedia

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Halite

Dolomite

Gypsum

Coal

Claystone

Carbonatite

Serpentinite

Skarn

Schist

Shale

Amazonite (Microcline (K(AlSi3O8))) — mineral

Amazonite

Microcline (K(AlSi3O8))

Mahogany Obsidian (Volcanic glass containing Magnetite/Hematite) — igneous

Mahogany Obsidian

Volcanic glass containing Magnetite/Hematite

Bauxite (Iron-stained Chert / Ironstone Aggregate) (Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))) — sedimentary

Bauxite (Iron-stained Chert / Ironstone Aggregate)

Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))

Sandstone (Sandstone (clastic sedimentary rock)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock)

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

Quartz Pebble (with Iron Inclusions)

Silicon Dioxide (SiO2)

Fluorite Geode (Calcium Fluoride (CaF2)) — mineral

Fluorite Geode

Calcium Fluoride (CaF2)

Sedimentary Rock (Limestone or Siltstone pebble) (Sedimentary rock fragment) — sedimentary

Sedimentary Rock (Limestone or Siltstone pebble)

Sedimentary rock fragment

Yellow Fluorite (Calcium Fluoride (CaF2)) — mineral

Yellow Fluorite

Calcium Fluoride (CaF2)

Obsidian Fetish Carving with Turquoise Inlay (Volcanic Glass with Turquoise (CuAl6(PO4)4(OH)8·4H2O)) — igneous

Obsidian Fetish Carving with Turquoise Inlay

Volcanic Glass with Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Copper Ore (Malachite and Limonite bearing rock) (Copper-bearing rock with secondary copper minerals) — mineral

Copper Ore (Malachite and Limonite bearing rock)

Copper-bearing rock with secondary copper minerals

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Copper Ore Specimen (Cupriferous Rock / Malachite-bearing ore) — mineral

Copper Ore Specimen

Cupriferous Rock / Malachite-bearing ore

Ironstone Concretion / Goethite-Hematite Nodule (Goethite/Hematite (α-FeO(OH) / Fe2O3)) — sedimentary

Ironstone Concretion / Goethite-Hematite Nodule

Goethite/Hematite (α-FeO(OH) / Fe2O3)

Liesegang Banded Sandstone (Wonderstone) (Ferruginous Sandstone with Liesegang Rings) — sedimentary

Liesegang Banded Sandstone (Wonderstone)

Ferruginous Sandstone with Liesegang Rings

Druzy Quartz on Host Rock (Silicon Dioxide (SiO2) with various iron-oxide inclusions) — mineral

Druzy Quartz on Host Rock

Silicon Dioxide (SiO2) with various iron-oxide inclusions

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Small pale rock fragment (Indeterminate; possibly quartz, calcite, or a weathered feldspar-rich fragment) — mineral

Small pale rock fragment

Indeterminate; possibly quartz, calcite, or a weathered feldspar-rich fragment

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Desert Rose (Baryte or Selenite variant) (Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions) — mineral

Desert Rose (Baryte or Selenite variant)

Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions

Amygdaloidal Basalt (Amygdaloidal Mafic Volcanic Rock (Basalt)) — igneous

Amygdaloidal Basalt

Amygdaloidal Mafic Volcanic Rock (Basalt)

Banded Slate (Slate (Metamorphosed Siltstone/Mudstone)) — metamorphic

Banded Slate

Slate (Metamorphosed Siltstone/Mudstone)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Tiger's Eye (Brown/Dark variety) (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — metamorphic

Tiger's Eye (Brown/Dark variety)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss) (Gneiss (complex silicate composition)) — metamorphic

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Chrysoprase (Chalcedony with nickel impurities (SiO2)) — gemstone

Chrysoprase

Chalcedony with nickel impurities (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]

Sandstone (Ferruginous) (Arenite (with Iron Oxides)) — sedimentary

Sandstone (Ferruginous)

Arenite (with Iron Oxides)

Red Sandstone (Arenite (primarily Quartz with Hematite cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Sandstone (Arenicola (comprising mostly Quartz, SiO2)) — sedimentary

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

Raw quartz (likely milky/smoky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Raw quartz (likely milky/smoky quartz)

Quartz, silicon dioxide (SiO₂)

Sandstone (Sandstone (various mineral compositions)) — Sedimentary

Sandstone

Sandstone (various mineral compositions)

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

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

Chrysocolla

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

Quartz with inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz with inclusions

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Tufa Rock and Tumbled Gemstones (Calcareous Tufa (Calcium Carbonate, CaCO3)) — sedimentary

Tufa Rock and Tumbled Gemstones

Calcareous Tufa (Calcium Carbonate, CaCO3)

Sandstone with Quartz Vein (Arenite with Quartz (SiO2) protrusion) — sedimentary

Sandstone with Quartz Vein

Arenite with Quartz (SiO2) protrusion

Petrified Coral Fossil (Honeycomb Coral) (Favosites (Rugosa/Tabulate coral fossil replaced by microcrystalline quartz/chalcedony)) — fossil

Petrified Coral Fossil (Honeycomb Coral)

Favosites (Rugosa/Tabulate coral fossil replaced by microcrystalline quartz/chalcedony)