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

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

Quartz (Rose or Milky)

Silicon Dioxide (SiO2)

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

Quartz Drusy on Matrix

Silicon Dioxide (SiO2)

Crystalline Quartz (Rough) (Quartz (Silicon Dioxide, SiO2)) — mineral

Crystalline Quartz (Rough)

Quartz (Silicon Dioxide, SiO2)

Chert (Flint / Jasper / Hornstone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint / Jasper / Hornstone)

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Jasper Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper Pebble

Microcrystalline Quartz (SiO2)

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

Chalcedony with Druzy Quartz Geode

Silicon Dioxide (SiO2)

Vein-filled Porphyry or Brecciated Jasper Pebble (Brecciated volcanic rock with quartz/calcite veins) — igneous

Vein-filled Porphyry or Brecciated Jasper Pebble

Brecciated volcanic rock with quartz/calcite veins

Ironstone concretion (Iron-oxide-cemented sediment, chiefly goethite (α-FeO(OH)) and/or hematite (Fe₂O₃)) — sedimentary

Ironstone concretion

Iron-oxide-cemented sediment, chiefly goethite (α-FeO(OH)) and/or hematite (Fe₂O₃)

Rounded ironstone concretion (Iron-rich sedimentary concretion, commonly composed of goethite and/or hematite cementing sand or clay) — sedimentary

Rounded ironstone concretion

Iron-rich sedimentary concretion, commonly composed of goethite and/or hematite cementing sand or clay

Chalcedony in Limestone Host Rock (Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)) — Mineral within Sedimentary Rock

Chalcedony in Limestone Host Rock

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Mineral within Sedimentary Rock

Desert Rose (Gypsum / Barite Rose) (Hydrated Calcium Sulfate (CaSO4·2H2O) / Barium Sulfate (BaSO4)) — mineral

Desert Rose (Gypsum / Barite Rose)

Hydrated Calcium Sulfate (CaSO4·2H2O) / Barium Sulfate (BaSO4)

Limonite (Iron Ore) (Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)) — mineral理论上属于沉积成因

Limonite (Iron Ore)

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

mineral理论上属于沉积成因

Ferruginous Conglomerate (Ferruginous Conglomerate (Clastic Sedimentary Rock)) — sedimentary

Ferruginous Conglomerate

Ferruginous Conglomerate (Clastic Sedimentary Rock)

Moss Agate (SiO2 (Cryptocrystalline Quartz)) — gemstone

Moss Agate

SiO2 (Cryptocrystalline Quartz)

Chert (often called Flint when dark) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz (Quartz (Silicon Dioxide, SiO2)) — Mineral

Quartz

Quartz (Silicon Dioxide, SiO2)

Blue calcite (Calcite (CaCO₃), blue variety) — mineral

Blue calcite

Calcite (CaCO₃), blue variety

Small quartz crystal cluster (likely druzy quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Small quartz crystal cluster (likely druzy quartz)

Quartz, silicon dioxide (SiO₂)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Moss Agate (Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions) — mineral

Moss Agate

Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions

Green Aventurine (Quartz with fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Quartz with fuchsite inclusions (SiO2)

Amethyst (Faceted) (Silicon Dioxide with Iron impurities (SiO2)) — mineral

Amethyst (Faceted)

Silicon Dioxide with Iron impurities (SiO2)

Botryoidal Malachite (Malachite - Cu2CO3(OH)2) — mineral

Botryoidal Malachite

Malachite - Cu2CO3(OH)2

Milky Quartz Vein with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Vein with Iron Staining

Silicon Dioxide (SiO2)

Likely botryoidal calcite or aragonite specimen (Calcite (CaCO₃), possibly aragonite (CaCO₃)) — mineral

Likely botryoidal calcite or aragonite specimen

Calcite (CaCO₃), possibly aragonite (CaCO₃)

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

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Druzy Quartz Geode (Oco or Moroccan variety) (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz Geode (Oco or Moroccan variety)

Silicon Dioxide (SiO2)

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

Quartz Druzy Geode

Silicon Dioxide (SiO2)

Chert (Septarian Nodules-like) (Silicon dioxide (SiO2)) — sedimentary

Chert (Septarian Nodules-like)

Silicon dioxide (SiO2)

Limestone with Calcite Crust (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Calcite Crust

Sedimentary Calcium Carbonate (CaCO3)

Faceted clear gemstone, likely quartz (rock crystal) (Quartz, silicon dioxide (SiO₂); exact identity is uncertain because the strong flash and cut obscure diagnostic features) — gemstone

Faceted clear gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity is uncertain because the strong flash and cut obscure diagnostic features

Honey calcite (Calcite, CaCO₃) — mineral

Honey calcite

Calcite, CaCO₃

Quartz Geode with Iron Staining (Silicon Dioxide (SiO2) with Limonite/Hematite inclusions) — mineral

Quartz Geode with Iron Staining

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Quartz with Arsenopyrite (Silicon Dioxide (SiO2) with Iron Arsenic Sulfide (FeAsS)) — mineral

Quartz with Arsenopyrite

Silicon Dioxide (SiO2) with Iron Arsenic Sulfide (FeAsS)

Concrete (Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)) — sedimentary (artificial)

Concrete

Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)

sedimentary (artificial)

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

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Quartz crystal cluster (Quartz (silicon dioxide, SiO₂), likely clear or milky quartz) — mineral

Quartz crystal cluster

Quartz (silicon dioxide, SiO₂), likely clear or milky quartz

Quartz Geode (Crystalline Silicon Dioxide (SiO2) in a Geodic Concretion) — mineral

Quartz Geode

Crystalline Silicon Dioxide (SiO2) in a Geodic Concretion

Geode (Unopened Keokuk Geode) (Silicon Dioxide (SiO2) - Chalcedony / Quartz exterior) — mineral

Geode (Unopened Keokuk Geode)

Silicon Dioxide (SiO2) - Chalcedony / Quartz exterior

Limonite (Ironstone) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Ironstone)

Limonite (FeO(OH)·nH2O)