Rock Identifier

Category

Mineral Like (Anthropogenic)

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

Learn about Mineral Like (Anthropogenic) in the encyclopedia

Calc-Silicate Rock

Calc-Silicate Rock

Garden Quartz

Ribbon Jasper

Sagenite Agate

Leopard Skin Jasper

Leopard Skin Jasper

Flower Jasper

Feather Jasper

Dendritic Opal

Starburst Agate

Plume Agate

Feather Agate

Moss Opal

Diorite (Phaneritic intermediate plutonic rock (Diorite)) — igneous

Diorite

Phaneritic intermediate plutonic rock (Diorite)

Ruby in Matrix (Corundum (Al2O3)) — mineral

Ruby in Matrix

Corundum (Al2O3)

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

Quartz (Double-Terminated)

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Iron-stained) (Arenite (composed primarily of SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Iron-stained)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

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)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Dendritic Agate (Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)) — Mineral

Dendritic Agate

Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)

Native Copper (Tumbled Nugget) (Cu (Native Element)) — mineral

Native Copper (Tumbled Nugget)

Cu (Native Element)

Emerald In Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald In Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Gemstone Tree Brooch (Agate and Quartz) (Silicon Dioxide (SiO2)) — mineral

Gemstone Tree Brooch (Agate and Quartz)

Silicon Dioxide (SiO2)

Quartz Geode (Crystalline Quartz (SiO2) within a sedimentary/igneous host) — mineral

Quartz Geode

Crystalline Quartz (SiO2) within a sedimentary/igneous host

Specular Hematite (Hematite (Iron(III) oxide, Fe2O3)) — mineral

Specular Hematite

Hematite (Iron(III) oxide, Fe2O3)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Fossilized Shark Tooth (Root Portion) (Selachimorpha (partial specimen)) — fossil

Fossilized Shark Tooth (Root Portion)

Selachimorpha (partial specimen)

Pegmatitic Granite (Granite (composed of Quartz, Feldspar, and Mica)) — igneous

Pegmatitic Granite

Granite (composed of Quartz, Feldspar, and Mica)

Halite (Sodium Chloride (NaCl)) — mineral

Halite

Sodium Chloride (NaCl)

Yellow Agate (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Yellow Agate (Chalcedony)

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO₂)) — mineral

Smoky Quartz

Silicon Dioxide (SiO₂)

Moss Agate (Silicon Dioxide with inclusions (SiO2)) — mineral

Moss Agate

Silicon Dioxide with inclusions (SiO2)

Dendritic Agate (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Carnelian (Orange Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Orange Chalcedony)

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz (likely Chalcedony or Chert) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Chalcedony or Chert)

Silicon Dioxide (SiO2)

Sandstone (Clastic Sedimentary Rock (Quartz arenite or similar)) — sedimentary

Sandstone

Clastic Sedimentary Rock (Quartz arenite or similar)

Limonite (Hydrous ferric oxides (FeO(OH)·nH2O)) — sedimentary

Limonite

Hydrous ferric oxides (FeO(OH)·nH2O)

Chrysocolla (or Turquoise/Aventurine) (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla (or Turquoise/Aventurine)

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Smoky Quartz with Chert (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz with Chert

Silicon Dioxide (SiO2)

Blue Chalcedony Geode (with Quartz Druzy) (Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz) — mineral

Blue Chalcedony Geode (with Quartz Druzy)

Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz

Petrified Wood (Silicified Wood / Chalcedony (SiO2)) — mineral

Petrified Wood

Silicified Wood / Chalcedony (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Smoky Quartz with Amethyst (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz with Amethyst

Silicon Dioxide (SiO2)

Agate (Chalcedony (SiO2)) — mineral

Agate

Chalcedony (SiO2)

Tree Agate (Dendritic Agate (Silicon Dioxide, SiO2)) — Mineral

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2)

Smoky Quartz (Smoky Quartz (SiO2: Silicon Dioxide)) — mineral

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Black Obsidian (Obsidian (Volcanic Glass, SiO2 + impurity)) — igneous

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurity)

Sandstone (Arenite (clastic sedimentary rock)) — sedimentary

Sandstone

Arenite (clastic sedimentary rock)

Black Obsidian (Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)) — igneous

Black Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

Green Aventurine (Silicon dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon dioxide (SiO2) with Fuchsite inclusions

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

Quartz with Iron Staining

Crystalline Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)