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

Greenstone (Metabasalt) — metamorphic

Greenstone

Metabasalt

Black Onyx and Mother of Pearl (Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)) — mineral

Black Onyx and Mother of Pearl

Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Banded Sandstone (River Pebble) (Clastic Sedimentary Rock (SiO2 with impurities)) — sedimentary

Banded Sandstone (River Pebble)

Clastic Sedimentary Rock (SiO2 with impurities)

Granite (Granitoid) — igneous

Granite

Granitoid

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Orbicular Granite (Orbicular Granitoid) — igneous

Orbicular Granite

Orbicular Granitoid

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Red Sandstone (Iron-rich) (Ferruginous Sandstone (SiO2 with Iron Oxides)) — sedimentary

Red Sandstone (Iron-rich)

Ferruginous Sandstone (SiO2 with Iron Oxides)

Sunstone (Oligoclase (a plagioclase feldspar variant), (Na,Ca)(Al,Si)4O8) — mineral

Sunstone

Oligoclase (a plagioclase feldspar variant), (Na,Ca)(Al,Si)4O8

Geode (Chert or Quartz Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Geode (Chert or Quartz Nodule)

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Sandstone (Pebble) (Arenite (SiO2 based)) — sedimentary

Sandstone (Pebble)

Arenite (SiO2 based)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified wood (primarily Silicon Dioxide, SiO2)) — sedimentary

Petrified Wood

Silicified wood (primarily Silicon Dioxide, SiO2)

Ammonite Fossil (Ammonoidea (subclass)) — sedimentary

Ammonite Fossil

Ammonoidea (subclass)

Greenstone / Greenschist (Chlorite schist / Meta-basalt) — metamorphic

Greenstone / Greenschist

Chlorite schist / Meta-basalt

Greenstone / Greenschist (Greenschist (composed primarily of Chlorite, Epidote, and Actinolite)) — metamorphic

Greenstone / Greenschist

Greenschist (composed primarily of Chlorite, Epidote, and Actinolite)

Chert (Iron-stained) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Iron-stained)

Silicon Dioxide (SiO2)

Granitic Pegmatite (Granite Pegmatite (typically containing Quartz SiO2, Feldspar KAlSi3O8, and Muscovite)) — Igneous

Granitic Pegmatite

Granite Pegmatite (typically containing Quartz SiO2, Feldspar KAlSi3O8, and Muscovite)

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Sunstone (Feldspar variety) ((Ca,Na)(Al,Si)4O8 with Hematite or Goethite inclusions) — mineral

Sunstone (Feldspar variety)

(Ca,Na)(Al,Si)4O8 with Hematite or Goethite inclusions

Green Schist (Greenschist (containing Chlorite, Actinolite, and Epidote)) — metamorphic

Green Schist

Greenschist (containing Chlorite, Actinolite, and Epidote)

Hematite (Iron Oxide (Fe2O3)) — mineral

Hematite

Iron Oxide (Fe2O3)

Snowflake Obsidian (Vitreous Volcanic Rock (Amorphous Silicate), SiO2) — igneous

Snowflake Obsidian

Vitreous Volcanic Rock (Amorphous Silicate), SiO2

Quartz / Iron-Stained Quartz (Silicon Dioxide (SiO2) with iron oxide inclusions/staining) — mineral

Quartz / Iron-Stained Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions/staining

Granite Gneiss (Gneiss (derived from granitic protolith)) — metamorphic

Granite Gneiss

Gneiss (derived from granitic protolith)

Concretion (Septarian Concretion (Fragmentary)) — sedimentary

Concretion

Septarian Concretion (Fragmentary)

Quartz (Iron-Stained / Yellow Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained / Yellow Quartz)

Silicon Dioxide (SiO2)

Sandstone Concretion (Sandstone (Sedimentary Rock) with silica or calcite cement) — sedimentary

Sandstone Concretion

Sandstone (Sedimentary Rock) with silica or calcite cement

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — Mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

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

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Polished orbicular jasper / brecciated jasper (Jasper, microcrystalline quartz (SiO₂), with iron-oxide and clay-rich inclusions) — sedimentary

Polished orbicular jasper / brecciated jasper

Jasper, microcrystalline quartz (SiO₂), with iron-oxide and clay-rich inclusions

Desert Rose (Gypsum Rose) (Gypsum (CaSO4·2H2O) with inclusions of sand) — mineral

Desert Rose (Gypsum Rose)

Gypsum (CaSO4·2H2O) with inclusions of sand

Gneiss (Metamorphic Gneiss (High-grade regional metamorphism)) — metamorphic

Gneiss

Metamorphic Gneiss (High-grade regional metamorphism)

Diorite (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (Intermediate intrusive igneous rock)

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Chert (Flint nodule) (Silicon dioxide (SiO2)) — sedimentary

Chert (Flint nodule)

Silicon dioxide (SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Rough Gemstone Grains (Mixed Sapphires and Quartz) (Corundum (Al2O3) and Quartz (SiO2)) — mineral

Rough Gemstone Grains (Mixed Sapphires and Quartz)

Corundum (Al2O3) and Quartz (SiO2)