Rock Identifier

Category

Mineral, Often A Rock Given Its Aggregate Nature

Browse mineral, often a rock given its aggregate nature specimens identified by the Rock Identifier community.

Learn about Mineral, Often A Rock Given Its Aggregate Nature in the encyclopedia

Bumblebee Jasper

Bumblebee Jasper

Skarn

Serpentinite

Lamprophyre

Pyroxenite

Aquamarine Matrix

Aquamarine Matrix

Peacock Ore

Rock Salt

Black Shale

Potassium Feldspar

Potassium Feldspar

Metaconglomerate

Metaconglomerate

Green Marble

Sulfur (Native Sulfur (S8)) — mineral

Sulfur

Native Sulfur (S8)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Yellow Agate (Silicon Dioxide (SiO2)) — mineral

Yellow Agate

Silicon Dioxide (SiO2)

Weathered Sandstone (Quartz Arenite / Clastic Sedimentary Rock) — sedimentary

Weathered Sandstone

Quartz Arenite / Clastic Sedimentary Rock

Shale (Shale (clastic sedimentary rock)) — Sedimentary

Shale

Shale (clastic sedimentary rock)

Chalcedony (Banded/Mottled Variety) (Chalcedony (a cryptocrystalline variety of Quartz, SiO2)) — Mineral

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)

Iron Slag (Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)) — Anthropogenic (Man-made industrial byproduct)

Iron Slag

Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)

Anthropogenic (Man-made industrial byproduct)

Shale (Fissile mudrock (composed primarily of clay minerals and quartz)) — sedimentary

Shale

Fissile mudrock (composed primarily of clay minerals and quartz)

Pumice (or Volcanic Tuff / Ash) (Pumice / Pyroclastic rock) — igneous

Pumice (or Volcanic Tuff / Ash)

Pumice / Pyroclastic rock

Gabbro (Phaneritic mafic intrusive igneous rock) — igneous

Gabbro

Phaneritic mafic intrusive igneous rock

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

Basalt (with Porphyritic/Vesicular texture) (Extrusive mafic igneous rock) — igneous

Basalt (with Porphyritic/Vesicular texture)

Extrusive mafic igneous rock

Green Quartz / Chrysoprase / Sea Glass (Silicon Dioxide (SiO2)) — mineral

Green Quartz / Chrysoprase / Sea Glass

Silicon Dioxide (SiO2)

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

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Quartz (Milky or Yellow/Citrine Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Yellow/Citrine Quartz)

Silicon Dioxide (SiO2)

Jasper (Green Jasper/Heliotrope variety) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (Green Jasper/Heliotrope variety)

Silicon Dioxide (SiO2)

Shale (Sedimentary pelitic rock) — sedimentary

Shale

Sedimentary pelitic rock

Gabbro (River Cobble) (Gabbro (mafic intrusive rock)) — igneous

Gabbro (River Cobble)

Gabbro (mafic intrusive rock)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Milky Quartz / Chalcedony

Silicon Dioxide (SiO2)

Asphalt (Bituminous Concrete) (Composite material (bitumen binder with mineral aggregate)) — man-made rock (technosol)

Asphalt (Bituminous Concrete)

Composite material (bitumen binder with mineral aggregate)

man-made rock (technosol)

Mookaite Jasper (Siliceous sedimentary rock (variety of Jasper/Chert)) — Sedimentary Rock

Mookaite Jasper

Siliceous sedimentary rock (variety of Jasper/Chert)

Sedimentary Rock

Shale with Coprolite influence (Argillaceous sedimentary rock (Shale/Mudstone)) — sedimentary

Shale with Coprolite influence

Argillaceous sedimentary rock (Shale/Mudstone)

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Conglomerate (Conglomerate Rock (Paraconglomerate)) — sedimentary

Conglomerate

Conglomerate Rock (Paraconglomerate)

Banded Agate (specifically Carnelian Agate color) (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Banded Agate (specifically Carnelian Agate color)

Silicon Dioxide (SiO2) - variety of Chalcedony

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

Basalt Pebble

Mafic Igneous Rock (Basalt)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Pyrite and Fluorite on Quartz (Matrix Specimen) (Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)) — mineral

Pyrite and Fluorite on Quartz (Matrix Specimen)

Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

Limonite (after Pyrite Pseudomorph) (Limonite (Hydrated Iron Oxide Mixture, FeO(OH)·nH2O)) — mineral

Limonite (after Pyrite Pseudomorph)

Limonite (Hydrated Iron Oxide Mixture, FeO(OH)·nH2O)

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and clay inclusions) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay inclusions

Chert Breccia (Brecciated Chert (Microcrystalline SiO2)) — sedimentary

Chert Breccia

Brecciated Chert (Microcrystalline SiO2)

Shale (Lutaceous Rock (Hydrous Aluminum Silicates)) — sedimentary

Shale

Lutaceous Rock (Hydrous Aluminum Silicates)

Scoria (Volcanic Rock) (Scoria (often basaltic scoria)) — Igneous

Scoria (Volcanic Rock)

Scoria (often basaltic scoria)

Basalt (Porphyritic) (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt (Porphyritic)

Basalt (Mafic Extrusive Igneous Rock)

Shale or Mudstone (Argillaceous sedimentary rock) — sedimentary

Shale or Mudstone

Argillaceous sedimentary rock

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

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

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)