Rock Identifier

Category

Mineral Precipitate (Anthropogenic Context)

Browse mineral precipitate (anthropogenic context) specimens identified by the Rock Identifier community.

Learn about Mineral Precipitate (Anthropogenic Context) in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Chert (with Quartz Veining) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Quartz Veining)

Microcrystalline Quartz (SiO2)

Limonite / Iron Oxide Concretion (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O) — mineral

Limonite / Iron Oxide Concretion

Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Quartz on Limestone (Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)) — Mineral on Sedimentary

Quartz on Limestone

Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)

Mineral on Sedimentary

Banded Agate (River Pebble) (Silicon Dioxide with impurities (SiO2)) — sedimentary

Banded Agate (River Pebble)

Silicon Dioxide with impurities (SiO2)

Quartz Vein in River Siltstone (Crystalline Quartz (SiO2) in Siliclastic Matrix) — sedimentary

Quartz Vein in River Siltstone

Crystalline Quartz (SiO2) in Siliclastic Matrix

Quartz Crystal (Rough) (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal (Rough)

Silicon Dioxide (SiO2)

Limonite on Sandstone (Iron Oxyhydroxide (FeO(OH)·nH2O) on Quartz Sandstone) — sedimentary

Limonite on Sandstone

Iron Oxyhydroxide (FeO(OH)·nH2O) on Quartz Sandstone

Quartz (Silicon dioxide (SiO2)) — mineral

Quartz

Silicon dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz Vein in Schist / Gneiss Metamorphic Matrix (Silicon Dioxide (SiO2) in metamorphic schist host rock) — metamorphic

Quartz Vein in Schist / Gneiss Metamorphic Matrix

Silicon Dioxide (SiO2) in metamorphic schist host rock

Gold in Quartz Matrix (Gold (Au) embedded in Quartz (SiO2)) — mineral

Gold in Quartz Matrix

Gold (Au) embedded in Quartz (SiO2)

Rhodochrosite Pebble (MnCO3 (Manganese Carbonate)) — mineral

Rhodochrosite Pebble

MnCO3 (Manganese Carbonate)

Druzy Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Blue Aragonite (Aragonite (Calcium Carbonate, CaCO3)) — mineral

Blue Aragonite

Aragonite (Calcium Carbonate, CaCO3)

Jasper (Silica (SiO2) with impurities) — Sedimentary/Mineral

Jasper

Silica (SiO2) with impurities

Sedimentary/Mineral

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Blue Goldstone (Aventurine Glass (SiO2 with Cobalt/Copper inclusions)) — man-made glass

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Iron Slag (Ferrous Slag (Silicate/Oxide mixture)) — industrial byproduct (anthropogenic)

Iron Slag

Ferrous Slag (Silicate/Oxide mixture)

industrial byproduct (anthropogenic)

Asphalt (Road Aggregate) (Bituminous Conglomerate / Asphalt Concrete) — Anthropogenic (Man-made)

Asphalt (Road Aggregate)

Bituminous Conglomerate / Asphalt Concrete

Anthropogenic (Man-made)

Quartz Vein in Host Rock (Silicon dioxide (SiO2) veining in silicate matrix) — sedimentary

Quartz Vein in Host Rock

Silicon dioxide (SiO2) veining in silicate matrix

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

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Rainbow Fluorite (Calcium Fluoride (CaF2)) — mineral

Rainbow Fluorite

Calcium Fluoride (CaF2)

Jasper (Microcrystalline Quartz (SiO2) with impurities) — sedimentary

Jasper

Microcrystalline Quartz (SiO2) with impurities

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

Chert/Flint Nodule

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Hagstone / Lucky Stone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Hagstone / Lucky Stone)

Microcrystalline Quartz (SiO2)

Chalcedony (Chert/Flint variety) (Silicon Dioxide (SiO2)) — sedimentary

Chalcedony (Chert/Flint variety)

Silicon Dioxide (SiO2)

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Geode / Fossilized Gastropod or Shell Cast (Silicon dioxide (Quartz) replacement / fossil mold) — sedimentary

Geode / Fossilized Gastropod or Shell Cast

Silicon dioxide (Quartz) replacement / fossil mold

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Druzy Quartz (Botryoidal) (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz (Botryoidal)

Silicon Dioxide (SiO2)

Quartz Geode in Sedimentary Host Rock (Silicon Dioxide (SiO2) in Carbonate Matrix) — sedimentary

Quartz Geode in Sedimentary Host Rock

Silicon Dioxide (SiO2) in Carbonate Matrix

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

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

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz Geode (Silicon Dioxide (SiO2) - Crystalline Quartz) — mineral

Quartz Geode

Silicon Dioxide (SiO2) - Crystalline Quartz