Rock Identifier

Category

Mineral Like (Anthropogenic)

Browse mineral like (anthropogenic) specimens identified by the Rock Identifier community.

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Psilomelane (Black Hematite/Manganese Ore) (Barium Manganese Oxide (Formula: BaMn9O18(OH)4)) — mineral

Psilomelane (Black Hematite/Manganese Ore)

Barium Manganese Oxide (Formula: BaMn9O18(OH)4)

Red Granite (Felsic Intrusive Igneous Rock) — igneous

Red Granite

Felsic Intrusive Igneous Rock

Sandstone (Quartzite-rich) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Granite Pegmatite (Coarse-grained Granite (SiO2 - Aluminum and Alkalies)) — igneous

Granite Pegmatite

Coarse-grained Granite (SiO2 - Aluminum and Alkalies)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Lepidolite on Pegmatite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite) — igneous

Lepidolite on Pegmatite

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

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Schist (Chlorite/Mica Schist) — metamorphic

Schist

Chlorite/Mica Schist

Amethyst (Amethyst (Silicon Dioxide - SiO2 with iron impurities)) — mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2 with iron impurities)

Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Sandstone (with potential iron mineralization) (Arenite) — sedimentary

Sandstone (with potential iron mineralization)

Arenite

Granite (Phaneritic Plutonic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Plutonic Igneous Rock (Granite)

Nuummite (Orthorhombic amphibole (Gedrite and Anthophyllite mixture) - (Mg,Fe)7Si8O22(OH)2) — metamorphic

Nuummite

Orthorhombic amphibole (Gedrite and Anthophyllite mixture) - (Mg,Fe)7Si8O22(OH)2

Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

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

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Clear Quartz (Double Terminated) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Double Terminated)

Silicon Dioxide (SiO2)

Rose Quartz (Quartz (Silicon Dioxide with trace inclusions of dumortierite, Al7(BO3)(SiO4)3O3)) — mineral

Rose Quartz

Quartz (Silicon Dioxide with trace inclusions of dumortierite, Al7(BO3)(SiO4)3O3)

Sandstone with Iron Banding (Arenite with Hematite or Limonite staining (SiO2 with Fe2O3)) — sedimentary

Sandstone with Iron Banding

Arenite with Hematite or Limonite staining (SiO2 with Fe2O3)

Amethyst (Chevron or Banded variety) (Silicon Dioxide with Iron impurities (SiO2)) — mineral

Amethyst (Chevron or Banded variety)

Silicon Dioxide with Iron impurities (SiO2)

Basalt with Amygdules (Amygdaloidal Basalt) — igneous

Basalt with Amygdules

Amygdaloidal Basalt

Ferruginous Sandstone (Ironstone) (Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)) — sedimentary

Ferruginous Sandstone (Ironstone)

Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Geode (Unopened) (Silica-lined Vug (primarily SiO2)) — sedimentary

Geode (Unopened)

Silica-lined Vug (primarily SiO2)

Gneiss (specifically Banded Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

Pyrite (Fools Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fools Gold)

Iron Sulfide (FeS2)

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)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Honey Calcite Geode Segment (Calcite (Calcium Carbonate, CaCO3)) — mineral

Honey Calcite Geode Segment

Calcite (Calcium Carbonate, CaCO3)

Limonite after Pyrite (Prophecy Stone or Ironstone Concretion) (Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)) — mineral

Limonite after Pyrite (Prophecy Stone or Ironstone Concretion)

Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)

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

Limonite (with Goethite/Ironstone) (FeO(OH)·nH2O (Hydrated Iron Oxide)) — mineral

Limonite (with Goethite/Ironstone)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (with Iron Oxide staining) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (with Iron Oxide staining)

Silicon Dioxide (SiO2)

Granite (Phaneritic intrusive igneous rock (approx. 70 percent SiO2)) — igneous

Granite

Phaneritic intrusive igneous rock (approx. 70 percent SiO2)

Porous Quartzite (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

Porous Quartzite

Metamorphosed Quartz-rich Sandstone (SiO2)

Milky Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Brachiopod Fossil in Limestone (Phylum Brachiopoda, Class Rhynchonellata) — sedimentary

Brachiopod Fossil in Limestone

Phylum Brachiopoda, Class Rhynchonellata

Feldspar Rich Granite with Limonite Staining (K-Feldspar Granite (KAlSi3O8)) — igneous

Feldspar Rich Granite with Limonite Staining

K-Feldspar Granite (KAlSi3O8)

Banded Agate (variety of Chalcedony) (Agate (SiO2)) — mineral

Banded Agate (variety of Chalcedony)

Agate (SiO2)