Rock Identifier

Category

Sedimentary Rock (Specifically A Chemical Sedimentary Rock, Or A Chert If Considered Purely Mineral Aggregate)

Browse sedimentary rock (specifically a chemical sedimentary rock, or a chert if considered purely mineral aggregate) specimens identified by the Rock Identifier community.

Wood Jasper (Siliceous sedimentary rock (variety of Chert/Chalcedony)) — Sedimentary

Wood Jasper

Siliceous sedimentary rock (variety of Chert/Chalcedony)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Basalt (with possible alteration or lichen) (Mafic volcanic rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible alteration or lichen)

Mafic volcanic rock (primarily Plagioclase and Pyroxene)

Chert / Jasper / Agate (Chalcedony Group) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Jasper / Agate (Chalcedony Group)

Microcrystalline Quartz (SiO2)

African Turquoise (African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)) — sedimentary

African Turquoise

African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)

Puddingstone (specifically Michigan/Gowganda Puddingstone) (Conglomerate (Jasper Conglomerate)) — sedimentary

Puddingstone (specifically Michigan/Gowganda Puddingstone)

Conglomerate (Jasper Conglomerate)

Chert (Gravel Fragment) (Silicon dioxide (SiO2)) — sedimentary

Chert (Gravel Fragment)

Silicon dioxide (SiO2)

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

Agate (specifically Chalcedony nodule)

Silicon Dioxide (SiO2)

Chert (containing Iron Oxide) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (containing Iron Oxide)

Microcrystalline Quartz (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) - Impure Cryptocrystalline Quartz) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) - Impure Cryptocrystalline Quartz

Chert (Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / Flint (Silicon dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon dioxide (SiO2)

Jasper (Iron-stained Chert) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Grey River Stone (Quartz-rich Quartzite/Siltstone) (Quartzite / Meta-siltstone (primarily SiO2)) — Metamorphic (low-grade)

Grey River Stone (Quartz-rich Quartzite/Siltstone)

Quartzite / Meta-siltstone (primarily SiO2)

Metamorphic (low-grade)

Chert (Yellow or Tan Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow or Tan Chert)

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2) within a geode) — mineral

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Chert (variations include Flint/Jasper) (Chert (SiO2)) — sedimentary

Chert (variations include Flint/Jasper)

Chert (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Quartz Geode in Chert/Limestone Matrix (Silicon Dioxide (SiO2) within Sedimentary Host Rock) — sedimentary

Quartz Geode in Chert/Limestone Matrix

Silicon Dioxide (SiO2) within Sedimentary Host Rock

Limestone with Algal/Lichen Colonization (Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Algal/Lichen Colonization

Calcium Carbonate (CaCO3)

Sandstone (Quartzose Pebble) (Clastic Sedimentary Rock (Litharenite/Quartz arenite)) — sedimentary

Sandstone (Quartzose Pebble)

Clastic Sedimentary Rock (Litharenite/Quartz arenite)

Chert (with Limestone/Dolomite host) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Limestone/Dolomite host)

Microcrystalline Quartz (SiO2)

Chert (specifically Red Chert or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

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

Chert (Mudstone)

Microcrystalline Quartz (SiO2)

Yellow Ochre / Limonite (Limonite (FeO(OH)·nH2O)) — Mineral

Yellow Ochre / Limonite

Limonite (FeO(OH)·nH2O)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Aragonite / Calcite Geode (Calcium Carbonate (CaCO3)) — mineral

Aragonite / Calcite Geode

Calcium Carbonate (CaCO3)

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

Chert (Nodule)

Silicon Dioxide (SiO2)

River Cobble (likely Siltstone or Sandstone) (Clastic Sedimentary Rock) — sedimentary

River Cobble (likely Siltstone or Sandstone)

Clastic Sedimentary Rock

Chert (specifically Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Jasper with Quartz Veining (Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)) — sedimentary

Red Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)

Amygdaloidal Basalt with Epidote/Chlorite (Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))) — igneous

Amygdaloidal Basalt with Epidote/Chlorite

Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Green variety) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Green variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

River Rock (likely Siltstone or fine-grained Sandstone) (Clastic Sedimentary Rock) — sedimentary

River Rock (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock

Crushed Limestone (Gravel) (Calcium Carbonate (CaCO3)) — sedimentary

Crushed Limestone (Gravel)

Calcium Carbonate (CaCO3)

Chert (Iron-stained) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Iron-stained)

Silicon Dioxide (SiO2)

Red Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Red Chert

Microcrystalline Quartz (SiO2)