Rock Identifier

Category

Mineral Pseudomorph

Browse mineral pseudomorph specimens identified by the Rock Identifier community.

Learn about Mineral Pseudomorph in the encyclopedia

Pineapple Opal

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Bauxite (Bauxite (Al2O3·2H2O)) — sedimentary

Bauxite

Bauxite (Al2O3·2H2O)

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

Limonite (Iron Ore)

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

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

Lepidolite

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

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within a metamorphic matrix) — metamorphic

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within a metamorphic matrix

Amygdaloidal Basalt (Vesicular Basalt with Amygdules) — igneous

Amygdaloidal Basalt

Vesicular Basalt with Amygdules

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

Malachite

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

Greenstone (Protolith of basalt/gabbro (chlorite-epidote metamorphic facies)) — metamorphic

Greenstone

Protolith of basalt/gabbro (chlorite-epidote metamorphic facies)

Arsenopyrite with Schist Matrix (Arsenopyrite (FeAsS)) — mineral

Arsenopyrite with Schist Matrix

Arsenopyrite (FeAsS)

Granite (Thin Section) (Granite (Felsic Plutonic Rock)) — igneous

Granite (Thin Section)

Granite (Felsic Plutonic Rock)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Schist (Schist (Crystalline metamorphic rock)) — metamorphic

Schist

Schist (Crystalline metamorphic rock)

Rutilated Quartz (Silicon Dioxide (SiO2) with inclusions of Titanium Dioxide (TiO2)) — mineral

Rutilated Quartz

Silicon Dioxide (SiO2) with inclusions of Titanium Dioxide (TiO2)

Granite (Phaneritic felsic intrusive igneous rock) — igneous

Granite

Phaneritic felsic intrusive igneous rock

Granite Pebble (Intrusive igneous rock (Quartz, Feldspar, Mica)) — igneous

Granite Pebble

Intrusive igneous rock (Quartz, Feldspar, Mica)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Sandstone (Weathered Fragment) (Clastic Sedimentary Rock) — sedimentary

Sandstone (Weathered Fragment)

Clastic Sedimentary Rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Sandstone (Tumbled / Rounded) (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone (Tumbled / Rounded)

Sedimentary Rock (Quartz arenite)

Blue Apatite (Fluorapatite / Apatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Fluorapatite / Apatite (Ca5(PO4)3(F,Cl,OH))

Quartz and Quartzite (Silicon Dioxide (SiO2)) — mineral

Quartz and Quartzite

Silicon Dioxide (SiO2)

Chrysocolla in Cuprite (Sonoran Sunrise) (Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O) (Chrysocolla) and Cu2O (Cuprite)) — mineral

Chrysocolla in Cuprite (Sonoran Sunrise)

Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O) (Chrysocolla) and Cu2O (Cuprite)

Gneiss (specifically a Granitic Gneiss specimen) (Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)) — metamorphic

Gneiss (specifically a Granitic Gneiss specimen)

Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)

Heat-Treated Amethyst (Commercial Citrine) (Silicon Dioxide (SiO2) - Macro-crystalline Quartz) — mineral

Heat-Treated Amethyst (Commercial Citrine)

Silicon Dioxide (SiO2) - Macro-crystalline Quartz

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartz Pebbles (Silicon Dioxide (SiO2)) — mineral

Quartz Pebbles

Silicon Dioxide (SiO2)

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

Quartz (Druzy)

Silicon Dioxide (SiO2)

Chrysocolla-rich copper ore (Chrysocolla, a hydrated copper aluminosilicate (approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O), possibly mixed with malachite or turquoise-group minerals) — mineral

Chrysocolla-rich copper ore

Chrysocolla, a hydrated copper aluminosilicate (approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O), possibly mixed with malachite or turquoise-group minerals

Selenite / Gypsum (Gypsum (CaSO4·2H2O)) — Mineral

Selenite / Gypsum

Gypsum (CaSO4·2H2O)

Siltstone Pebble with Veining (Siltstone) — sedimentary

Siltstone Pebble with Veining

Siltstone

Garnet Schist (Almandine-bearing Mica Schist) — metamorphic

Garnet Schist

Almandine-bearing Mica Schist

Quartz with Spessartine Garnet and Iron Staining (Silicon Dioxide (SiO2) with Almandine-Spessartine (Mn3Al2(SiO4)3)) — mineral

Quartz with Spessartine Garnet and Iron Staining

Silicon Dioxide (SiO2) with Almandine-Spessartine (Mn3Al2(SiO4)3)

Biotite Schist (likely) (Biotite Schist (rock), Biotite (mineral)) — Metamorphic

Biotite Schist (likely)

Biotite Schist (rock), Biotite (mineral)

Pyrite-rich Ore (Pyrite (FeS2) with secondary minerals) — mineral

Pyrite-rich Ore

Pyrite (FeS2) with secondary minerals

Sandstone (likely River-tumbled Picture Sandstone) (Arenite (predominantly SiO2 with iron oxide impurities)) — sedimentary

Sandstone (likely River-tumbled Picture Sandstone)

Arenite (predominantly SiO2 with iron oxide impurities)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Hematite (Iron Ore)

Hematite (Fe2O3)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Malachite (Copper carbonate hydroxide, Cu2CO3(OH)2) — mineral

Malachite

Copper carbonate hydroxide, Cu2CO3(OH)2

Granitic Gneiss (Gneiss (high-grade metamorphic rock)) — metamorphic

Granitic Gneiss

Gneiss (high-grade metamorphic rock)

Lapis Lazuli (Lazurite-rich metamorphic rock) — metamorphic

Lapis Lazuli

Lazurite-rich metamorphic rock