Rock Identifier

Category

Not A Rock (Man Made Origin)

Browse not a rock (man made origin) specimens identified by the Rock Identifier community.

Learn about Not A Rock (Man Made Origin) in the encyclopedia

Rock Gypsum

Coral Rock

Asphalt Rock

Rock Salt

Talc-carbonate Rock

Talc-carbonate Rock

Calc-Silicate Rock

Calc-Silicate Rock

Opalite

Goldstone

Anorthosite

Oregon Sunstone

Oregon Sunstone

Oregon Opal

Map Jasper

Granodiorite (Phaneritic Plutonic Rock (Granodiorite)) — igneous

Granodiorite

Phaneritic Plutonic Rock (Granodiorite)

Quartz (Chert/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

Granite (Phaneritic intrusive igneous rock) — igneous

Granite

Phaneritic intrusive igneous rock

Blue goldstone beads (Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli) — mineral

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

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

Quartz (Milky/Rose Quartz)

Silicon Dioxide (SiO2)

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

Emerald In Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Metal Chain (Likely Steel or a Steel Alloy) (Steel (primarily iron and carbon); specific alloy unknown) — Man-made Object (Metal/Alloy)

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Man-made Object (Metal/Alloy)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Red jasper in gray host rock (likely hematite-stained quartzite or rhyolite) (Jasper: microcrystalline quartz (SiO₂), with iron-oxide coloration; exact host uncertain from image) — mineral

Red jasper in gray host rock (likely hematite-stained quartzite or rhyolite)

Jasper: microcrystalline quartz (SiO₂), with iron-oxide coloration; exact host uncertain from image

Obsidian (Obsidian (volcanic glass, amorphous silica rich rock)) — Igneous

Obsidian

Obsidian (volcanic glass, amorphous silica rich rock)

Granite (Intrusive igneous rock) — igneous

Granite

Intrusive igneous rock

Possible basaltic rock or meteorite candidate (Likely vesicular basalt; meteorite identification cannot be confirmed visually) — igneous

Possible basaltic rock or meteorite candidate

Likely vesicular basalt; meteorite identification cannot be confirmed visually

Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst) (Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage) — mineral

Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst)

Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage

Quartz (Water-worn Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Water-worn Pebble)

Silicon Dioxide (SiO2)

Asphalt Pavement (with aggregate) (Asphalt concrete) — man-made composite

Asphalt Pavement (with aggregate)

Asphalt concrete

man-made composite

Note: Item is not a geological specimen (Guitar Components (Steel, Nickel, Plastic, Wood)) — Synthetic/Consumer Product

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Synthetic/Consumer Product

Granite (Granite (Plutonic Igneous Rock)) — igneous

Granite

Granite (Plutonic Igneous Rock)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Ocean Jasper (Silicon Dioxide (SiO2) with various inclusions) — igneous/sedimentary mixed (Orbicular Jasper)

Ocean Jasper

Silicon Dioxide (SiO2) with various inclusions

igneous/sedimentary mixed (Orbicular Jasper)

Iron Slag (Anthropogenic Vitreous Silicate (Byproduct of Smelting)) — Mineral-like byproduct

Iron Slag

Anthropogenic Vitreous Silicate (Byproduct of Smelting)

Mineral-like byproduct

Breccia (Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)) — sedimentary

Breccia

Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)

Dyed Crackle Quartz (Silicon Dioxide (SiO2) with synthetic dye) — mineral

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Dyed Dragon Vein Agate (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Green-and-white quartz-rich rock, likely chrysoprase or serpentine-bearing stone (Uncertain; possible chrysoprase (microcrystalline quartz, SiO₂) or serpentinite (magnesium silicate minerals)) — mineral

Green-and-white quartz-rich rock, likely chrysoprase or serpentine-bearing stone

Uncertain; possible chrysoprase (microcrystalline quartz, SiO₂) or serpentinite (magnesium silicate minerals)

Libyan Desert Glass (Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)) — mineral (Tektite/Impactite)

Libyan Desert Glass

Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)

mineral (Tektite/Impactite)

Quartz (Tumbled/Water-worn) (Silicon Dioxide (SiO2)) — mineral

Quartz (Tumbled/Water-worn)

Silicon Dioxide (SiO2)

Basalt (Weathered Pebble) (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt (Weathered Pebble)

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Basalt (Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Extrusive Igneous Rock)

Tektite (Tektite (meteoritic glass)) — meteorite

Tektite

Tektite (meteoritic glass)

Likely iron-rich rock or metallic mineral fragment (Uncertain; possibly limonite/goethite-rich material or weathered iron meteorite fragment) — mineral

Likely iron-rich rock or metallic mineral fragment

Uncertain; possibly limonite/goethite-rich material or weathered iron meteorite fragment

Sea Glass (Amorphous Silicon Dioxide (Man-made glass weathered by nature)) — mineral

Sea Glass

Amorphous Silicon Dioxide (Man-made glass weathered by nature)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Possible weathered basalt or slag fragment (Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image) — igneous

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

Sandstone (Greywacke) (Arenite / Wacke (Mainly SiO2 with various lithic fragments)) — sedimentary

Sandstone (Greywacke)

Arenite / Wacke (Mainly SiO2 with various lithic fragments)

Stromatolite (Laminated biogenic sedimentary structure (formed by Cyanobacteria)) — sedimentary

Stromatolite

Laminated biogenic sedimentary structure (formed by Cyanobacteria)

Granite Cobble (Granite (Porphyritic/Coarse-grained)) — igneous

Granite Cobble

Granite (Porphyritic/Coarse-grained)

Quartz-rich rock fragment, possibly granite or quartzite (Primarily quartz (SiO₂), with possible feldspar and iron-oxide staining) — igneous or metamorphic

Quartz-rich rock fragment, possibly granite or quartzite

Primarily quartz (SiO₂), with possible feldspar and iron-oxide staining

igneous or metamorphic

Granite (Phaneritic Felsic/Intermediate Igneous Rock) — igneous

Granite

Phaneritic Felsic/Intermediate Igneous Rock

Chert (Chert Nodule with Chalky Cortex) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Chert Nodule with Chalky Cortex)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Basalt River Pebble (Basalt) — igneous

Basalt River Pebble

Basalt

Polished red jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides) — mineral

Polished red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Sea Glass (Amorphous silicon dioxide (Man-made glass weathered by nature)) — mineral

Sea Glass

Amorphous silicon dioxide (Man-made glass weathered by nature)