Rock Identifier

Category

Man Made

Browse man made specimens identified by the Rock Identifier community.

Learn about Man Made in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Map Jasper

Mandarin Garnet

Mandarin Garnet

Andalusite

Marl

Dunite

Coquina

Dalmatian Jasper

Dalmatian Jasper

Chalk

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

Rough Diamond

Natural Diamond (Carbon, C)

White Topaz (faceted) (Aluminum silicate fluoride hydroxide (Al2SiO4(F, OH)2)) — gemstone

White Topaz (faceted)

Aluminum silicate fluoride hydroxide (Al2SiO4(F, OH)2)

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

Fluorite (Rainbow Fluorite)

Fluorite (Calcium Fluoride, CaF2)

Iron-Nickel Meteorite (Siderite (Meteoric Iron-Nickel alloy)) — igneous

Iron-Nickel Meteorite

Siderite (Meteoric Iron-Nickel alloy)

Hematite Nodule (Hematite (Fe2O3)) — mineral

Hematite Nodule

Hematite (Fe2O3)

Yellow Quartz (SiO2 (Silicon Dioxide)) — mineral

Yellow Quartz

SiO2 (Silicon Dioxide)

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

Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Ruby in Zoisite (Anyolite) (Anyolite (Combination of Corundum and Zoisite)) — metamorphic

Ruby in Zoisite (Anyolite)

Anyolite (Combination of Corundum and Zoisite)

Granite (with Quartz and Mica) (Phaneritic Felsic Igneous Rock) — igneous

Granite (with Quartz and Mica)

Phaneritic Felsic Igneous Rock

Mica Schist (Mica Schist (primarily Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides (goethite)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (goethite)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Sandstone Concretion (Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)) — sedimentary

Sandstone Concretion

Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)

Red Jasper (Chert) (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper (Chert)

Silicon Dioxide (SiO2)

Chert (Nodule) (Silicon dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (Nodule)

Silicon dioxide (SiO2) - Cryptocrystalline Quartz

Yellow Agate (Agate (Microcrystalline Silicon Dioxide, SiO2)) — mineral

Yellow Agate

Agate (Microcrystalline Silicon Dioxide, SiO2)

Fluorite-Gedrite in Quartz (Schist) (Fluorite (CaF2) with Gedrite in Quartz/Feldspar Matrix) — metamorphic

Fluorite-Gedrite in Quartz (Schist)

Fluorite (CaF2) with Gedrite in Quartz/Feldspar Matrix

Chert / Flint Nodule (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint Nodule

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Granitic Gneiss (Gneiss (Polymetamorphic Granitic Gneiss)) — metamorphic

Granitic Gneiss

Gneiss (Polymetamorphic Granitic Gneiss)

Ferruginous Quartz (Red Jasper/Carnelian Agate) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Ferruginous Quartz (Red Jasper/Carnelian Agate)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Jasper (Yellow/Brown variety) (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Jasper (Yellow/Brown variety)

Silicon Dioxide (SiO2) with iron oxide impurities

Carnelian Agate / Iron-Stained Quartz (SiO2) — Mineral

Carnelian Agate / Iron-Stained Quartz

SiO2

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety) (Porphyritic Basalt containing Plagioclase Feldspar phenocrysts) — igneous

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety)

Porphyritic Basalt containing Plagioclase Feldspar phenocrysts

Slate (Slate (Foliated metamorphic rock consisting mainly of quartz and muscovite or illite)) — metamorphic

Slate

Slate (Foliated metamorphic rock consisting mainly of quartz and muscovite or illite)

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

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Peridot (likely, based on color and appearance) (Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)) — Mineral

Peridot (likely, based on color and appearance)

Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)

Peridotite (Peridotite (Ultramafic Rock)) — igneous

Peridotite

Peridotite (Ultramafic Rock)

Sandstone (Ferruginous) (Arenite (with Iron Oxide)) — sedimentary

Sandstone (Ferruginous)

Arenite (with Iron Oxide)

Rugose Coral (Horn Coral) Fossil in Limestone (Order Rugosa (commonly Grewingkia or Zaphrentis genus)) — sedimentary

Rugose Coral (Horn Coral) Fossil in Limestone

Order Rugosa (commonly Grewingkia or Zaphrentis genus)

Desert Rose (Gypsum (variety Selenite) or Baryte with Sand inclusions, CaSO4·2H2O) — mineral

Desert Rose

Gypsum (variety Selenite) or Baryte with Sand inclusions, CaSO4·2H2O

Red Jasper (SiO2 (Silicon Dioxide) with Iron oxides) — sedimentary

Red Jasper

SiO2 (Silicon Dioxide) with Iron oxides

Aragonite Star Cluster (or Aragonite Sputnik) (Aragonite (Orthorhombic Calcium Carbonate, CaCO3)) — mineral

Aragonite Star Cluster (or Aragonite Sputnik)

Aragonite (Orthorhombic Calcium Carbonate, CaCO3)

Martian Meteorite (Black Beauty) (Martian (basaltic breccia) Meteorite, Northwest Africa (NWA) 7034) — igneous

Martian Meteorite (Black Beauty)

Martian (basaltic breccia) Meteorite, Northwest Africa (NWA) 7034

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

Hematite

Iron(III) oxide (Fe2O3)

Diamond (in a Gold Jewelry Setting) (Carbon (C)) — mineral

Diamond (in a Gold Jewelry Setting)

Carbon (C)

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Fossilized Brain Coral (Diploria labyrinthiformis (Fossilized)) — sedimentary

Fossilized Brain Coral

Diploria labyrinthiformis (Fossilized)

Emerald in Quartz Matrix (Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium) — gemstone

Emerald in Quartz Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Red Quartzite (Quartzite (SiO2 with iron oxide impurities)) — metamorphic

Red Quartzite

Quartzite (SiO2 with iron oxide impurities)

Granite (Phaneritic intrusive igneous rock) — igneous

Granite

Phaneritic intrusive igneous rock

Fossiliferous Limestone (with Coralline Inclusions) (Calcium Carbonate (CaCO3)) — sedimentary

Fossiliferous Limestone (with Coralline Inclusions)

Calcium Carbonate (CaCO3)

Scoria (Lava Rock) (Scoriaceous Basalt) — igneous

Scoria (Lava Rock)

Scoriaceous Basalt