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

Glauconite

Hutcheonite

Hutcheonite

Halite

Halite

Sperrylite

Sperrylite

Baddeleyite

Baddeleyite

Anatase

Anatase

Brookite

Brookite

Talc

Talc

Euxenite

Euxenite

Dolomite

Dolomite

Buergerite

Buergerite

Eltyubyuite

Eltyubyuite

Chert (Nodular) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Nodular)

Microcrystalline Quartz (SiO2)

Sandstone (with manganese staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with manganese staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Ferruginous) (Arenite (Fe-rich SiO2)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich SiO2)

Brown Agate (Cryptocrystalline Silica (SiO2)) — sedimentary

Brown Agate

Cryptocrystalline Silica (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Gold-bearing Quartz (Auriferous Quartz) (Quartz (SiO2) with native Gold (Au) inclusions) — mineral

Gold-bearing Quartz (Auriferous Quartz)

Quartz (SiO2) with native Gold (Au) inclusions

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

Quartz Geode (Water-worn)

Silicon Dioxide (SiO2)

Oolitic Limestone (Oolite) (Oolitic Limestone (primarily Calcium Carbonate, CaCO3)) — sedimentary

Oolitic Limestone (Oolite)

Oolitic Limestone (primarily Calcium Carbonate, CaCO3)

Carnelian (Carnelian (a variety of Chalcedony, SiO₂)) — Mineral

Carnelian

Carnelian (a variety of Chalcedony, SiO₂)

Crazy Lace Agate (Agate (Chalcedony), SiO2) — Mineral

Crazy Lace Agate

Agate (Chalcedony), SiO2

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) in Altered Host Rock) — mineral

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in Altered Host Rock

Chert (Jasper/Agate mix) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate mix)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Chert Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble

Microcrystalline Quartz (SiO2)

Quartz-veined Siltstone/Greywacke (Clastic Sedimentary Rock with Quartz Infill (SiO2 vein)) — sedimentary

Quartz-veined Siltstone/Greywacke

Clastic Sedimentary Rock with Quartz Infill (SiO2 vein)

Chert (Flint Nodules) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint Nodules)

Cryptocrystalline Quartz (SiO2)

Chert Nodule (Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert Nodule (Flint)

Microcrystalline quartz (SiO2)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Limestone (specifically Fossiliferous or Crinoidal Limestone) (Calcium Carbonate (CaCO3) - Calcite Rock) — sedimentary

Limestone (specifically Fossiliferous or Crinoidal Limestone)

Calcium Carbonate (CaCO3) - Calcite Rock

Dyed Blue Agate Slice (Silicon Dioxide (SiO2) with artificial dye) — mineral

Dyed Blue Agate Slice

Silicon Dioxide (SiO2) with artificial dye

Amethyst (Rough Quartz) (Silicon Dioxide (SiO2 with Iron impurities)) — mineral

Amethyst (Rough Quartz)

Silicon Dioxide (SiO2 with Iron impurities)

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

Quartz Geode (Cracked)

Crystalline Silicon Dioxide (SiO2)

Iron-stained Quartz (Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)) — mineral

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)

Landscape Jasper (SiO2) — Mineral

Landscape Jasper

SiO2

Fluorite (Rainbow Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)

Quartz Geode (Crystalline Silicon Dioxide (SiO2) in Geode form) — mineral

Quartz Geode

Crystalline Silicon Dioxide (SiO2) in Geode form

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

Malachite

Malachite (Cu2CO3(OH)2)

Blue Goldstone (Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)) — Synthetic (Man-made Glass)

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Synthetic (Man-made Glass)

Chert (Quartzite-rich River Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Quartzite-rich River Pebble)

Silicon Dioxide (SiO2)

Banded Chert (Jasper) River Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert (Jasper) River Pebble

Microcrystalline Quartz (SiO2)

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

Red Jasper

Jasper (SiO2, Silicon Dioxide with Iron inclusions)

Chert (Common Variety, Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Common Variety, Jasper)

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Iron impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron impurities

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

Chert / Microcrystalline Quartz

Chert (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chalcedony (Botryoidal or Chalcedony Rose) (Silicon dioxide (SiO2)) — mineral

Chalcedony (Botryoidal or Chalcedony Rose)

Silicon dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Chrysocolla on Quartz/Rhyolite matrix (Hydrated copper phyllosilicate mineral: (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla on Quartz/Rhyolite matrix

Hydrated copper phyllosilicate mineral: (Cu,Al)2H2Si2O5(OH)4·nH2O

Fluorite (Purple Fluorite in Matrix) (Fluorite (Calcium Fluoride, CaF2)) — mineral

Fluorite (Purple Fluorite in Matrix)

Fluorite (Calcium Fluoride, CaF2)

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

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Jasper (specifically Yellow/Red Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (specifically Yellow/Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions