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

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

Epidote

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

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Biotite Schist (Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]) — metamorphic

Biotite Schist

Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]

Tumbled Quartz (Peach Quartz / Red Quartz) (Silicon Dioxide (SiO2)) — mineral

Tumbled Quartz (Peach Quartz / Red Quartz)

Silicon Dioxide (SiO2)

Banded Gneiss with Quartz Veining (Gneiss (High-grade Regional Metamorphism)) — metamorphic

Banded Gneiss with Quartz Veining

Gneiss (High-grade Regional Metamorphism)

Sandstone (Arenite (primarily Quartz-rich sedimentary rock)) — sedimentary

Sandstone

Arenite (primarily Quartz-rich sedimentary rock)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Greenstone (Chlorite schist or Epidosite) — metamorphic

Greenstone

Chlorite schist or Epidosite

Orthoclase Feldspar (or K-Feldspar) (Orthoclase (KAlSi3O8)) — Mineral

Orthoclase Feldspar (or K-Feldspar)

Orthoclase (KAlSi3O8)

Red Sandstone (Arenite (SiO2 with Fe2O3)) — sedimentary

Red Sandstone

Arenite (SiO2 with Fe2O3)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Copper Ore with Chrysocolla and Azurite (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / Cu3(CO3)2(OH)2 (Azurite)) — mineral

Copper Ore with Chrysocolla and Azurite

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / Cu3(CO3)2(OH)2 (Azurite)

Sandstone (Quartzite texture) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite texture)

Clastic sedimentary rock (primarily SiO2)

Wishing Stone (Quartz-Veined Basalt) (Amygdaloidal Basalt with Quartz (SiO2) vein) — igneous

Wishing Stone (Quartz-Veined Basalt)

Amygdaloidal Basalt with Quartz (SiO2) vein

Sandstone Concretion (Septarian Concretion (Nodule)) — sedimentary

Sandstone Concretion

Septarian Concretion (Nodule)

Sandstone (Sandstone (SiO2 dominant, with minor feldspar and clay minerals)) — sedimentary

Sandstone

Sandstone (SiO2 dominant, with minor feldspar and clay minerals)

Biotite Schist (Biotite-rich Schist) — metamorphic

Biotite Schist

Biotite-rich Schist

Geode (Unopened) (SiO2 (Quartz-filled Sedimentary Nodule)) — sedimentary

Geode (Unopened)

SiO2 (Quartz-filled Sedimentary Nodule)

Pink Orthoclase Feldspar with Dendrites (Orthoclase (KAlSi3O8) with Manganese Oxide dendrites) — mineral

Pink Orthoclase Feldspar with Dendrites

Orthoclase (KAlSi3O8) with Manganese Oxide dendrites

Obsidian (Volcanic glass (Mainly SiO2)) — igneous

Obsidian

Volcanic glass (Mainly SiO2)

Greenstone (Greenschist) (Greenschist facies rock (containing chlorite, epidote, actinolite)) — metamorphic

Greenstone (Greenschist)

Greenschist facies rock (containing chlorite, epidote, actinolite)

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

Malachite

Copper carbonate hydroxide Cu2CO3(OH)2

Rough Diamond (Diamond (Native Carbon, C)) — mineral

Rough Diamond

Diamond (Native Carbon, C)

Aura Quartz (Titanium-coated Silicon Dioxide (SiO2)) — mineral

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Iron-stained Quartz (Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)) — mineral

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)

Weathered banded sandstone pebble (Quartz-rich sandstone (predominantly SiO₂)) — sedimentary

Weathered banded sandstone pebble

Quartz-rich sandstone (predominantly SiO₂)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Diorite (or Gabbro/Granitoid) (Diorite) — igneous

Diorite (or Gabbro/Granitoid)

Diorite

Diorite (Spotted) (Plutonic Igneous Rock (Diorite)) — igneous

Diorite (Spotted)

Plutonic Igneous Rock (Diorite)

Gastropod Fossil (Snail Stone or Steinkern) (Class Gastropoda (Calcium Carbonate - CaCO3 / Silica - SiO2 replacing original shell)) — sedimentary

Gastropod Fossil (Snail Stone or Steinkern)

Class Gastropoda (Calcium Carbonate - CaCO3 / Silica - SiO2 replacing original shell)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic volcanic rock including secondary mineral infills)) — Igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock including secondary mineral infills)

Chrysotile Asbestos (Chrysotile [Mg3Si2O5(OH)4]) — mineral

Chrysotile Asbestos

Chrysotile [Mg3Si2O5(OH)4]

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

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Gneiss (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade regional metamorphic rock)

Granite Gneiss (Metamorphic Rock (Quartz, Potassium Feldspar, Plagioclase, Biotite/Amphibole)) — metamorphic

Granite Gneiss

Metamorphic Rock (Quartz, Potassium Feldspar, Plagioclase, Biotite/Amphibole)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Geode (Crystalline Quartz (SiO2) within a sedimentary or volcanic host) — mineral

Quartz Geode

Crystalline Quartz (SiO2) within a sedimentary or volcanic host

Mahogany Obsidian (Obsidian (volcanic glass with hematite/magnetite inclusions)) — igneous

Mahogany Obsidian

Obsidian (volcanic glass with hematite/magnetite inclusions)

Banded Sandstone (Differential Weathering) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Banded Sandstone (Differential Weathering)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Ferruginous) (Arenite with Hematite cement (SiO2 + Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Hematite cement (SiO2 + Fe2O3)