Rock Identifier

Category

Not A Rock Or Mineral (Anthropogenic Material)

Browse not a rock or mineral (anthropogenic material) specimens identified by the Rock Identifier community.

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

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

mineral
Agate (Silicon dioxide (SiO2) - variety Chalcedony) — mineral

Agate

Silicon dioxide (SiO2) - variety Chalcedony

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

Banded Agate

Silicon Dioxide (SiO2)

mineral
Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary
Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

sedimentary
Blue Lace Agate (Silicon Dioxide (SiO₂), a variety of Chalcedony) — mineral

Blue Lace Agate

Silicon Dioxide (SiO₂), a variety of Chalcedony

mineral
Gabbro (Gabbro (Mafic Plutonic Rock)) — igneous

Gabbro

Gabbro (Mafic Plutonic Rock)

igneous
Labradorite ((Ca, Na)(Al, Si)4O8) — mineral

Labradorite

(Ca, Na)(Al, Si)4O8

mineral
Lapis Lazuli (Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

metamorphic
Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Hag Stone (Perforated Sedimentary Rock) — sedimentary

Hag Stone

Perforated Sedimentary Rock

sedimentary
Feldspar (Potassium Feldspar (KAlSi3O8)) — mineral

Feldspar

Potassium Feldspar (KAlSi3O8)

mineral
River Stone (Granitic Gneiss) (Foliated Granitic Gneiss) — metamorphic

River Stone (Granitic Gneiss)

Foliated Granitic Gneiss

metamorphic
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Quartz (Variety of Rough Mineral Specimens) (Silicon Dioxide (SiO2)) — mineral

Quartz (Variety of Rough Mineral Specimens)

Silicon Dioxide (SiO2)

mineral
Gneiss (Foliated Metamorphic Rock (Gneiss)) — metamorphic

Gneiss

Foliated Metamorphic Rock (Gneiss)

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

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

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

Druzzy Quartz on Matrix

Silicon Dioxide (SiO2)

mineral
Azurite and Malachite on Matrix (Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)) — mineral

Azurite and Malachite on Matrix

Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)

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

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock including secondary mineral infills)

Igneous
Granite Cobble (Granite (Phaneritic Igneous Rock)) — igneous

Granite Cobble

Granite (Phaneritic Igneous Rock)

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

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

mineral
Sandstone (Picture Sandstone) (Sandstone (primarily Quartz with Iron Oxide impurities)) — sedimentary

Sandstone (Picture Sandstone)

Sandstone (primarily Quartz with Iron Oxide impurities)

sedimentary
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Sandstone (Pebble) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Pebble)

Arenite (primarily SiO2)

sedimentary
Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

sedimentary
Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary
Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

mineral
Sandstone (with man-made markings) (Arenite (composed primarily of Quartz, SiO2)) — sedimentary

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

sedimentary
Gneiss (Gneiss (a type of metamorphic rock)) — Metamorphic Rock

Gneiss

Gneiss (a type of metamorphic rock)

Metamorphic Rock
Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

metamorphic
Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

mineral
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Olivine in Basalt (Peridot) (Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) within Basalt (Rock)) — igneous

Olivine in Basalt (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) within Basalt (Rock)

igneous
Petrified Wood (Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)) — sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)

sedimentary
Diorite (Phaneritic intermediate plutonic rock) — igneous

Diorite

Phaneritic intermediate plutonic rock

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

Petrified Wood

Silicified wood (primarily Silicon Dioxide, SiO2)

metamorphic
Granodiorite (Granodiorite (intermediate plutonic rock)) — igneous

Granodiorite

Granodiorite (intermediate plutonic rock)

igneous
Quartz Geode (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

mineral