Rock Identifier

Category

Sedimentary (Secondary Classification For A Weathered Mineral Specimen)

Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Secondary Classification For A Weathered Mineral Specimen) in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Aquamarine Matrix

Aquamarine Matrix

Ironstone

Ironstone

Coal

Coal

Claystone

Claystone

Shale

Shale

Anglesite

Anglesite

Garnierite

Garnierite

Pyromorphite

Pyromorphite

Marl

Marl

Black Shale

Black Shale

Crocoite

Crocoite

Quartzite (River Pebble) (Metamorphosed Quartz Sandstone (primarily SiO2)) — metamorphic

Quartzite (River Pebble)

Metamorphosed Quartz Sandstone (primarily SiO2)

Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Riverstone Quartzite (Quartzite (primarily SiO2)) — metamorphic

Riverstone Quartzite

Quartzite (primarily SiO2)

Quartz (Milky/Clear Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Clear Fragment)

Silicon Dioxide (SiO2)

Jasper / Yellow Chalcedony Pebble (Silicon Dioxide (SiO2)) — sedimentary

Jasper / Yellow Chalcedony Pebble

Silicon Dioxide (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with hydrated iron oxide impurities) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with hydrated iron oxide impurities

Sandstone (Arenite (composed primarily of Quartz: SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Ironstone Concretion (Moqui Marble type) (Iron oxide concretion (Goethite/Hematite and Sandstone)) — sedimentary

Ironstone Concretion (Moqui Marble type)

Iron oxide concretion (Goethite/Hematite and Sandstone)

Sandstone Concretion (Ferruginous Sandstone Concretion (SiO2 + FeO(OH))) — sedimentary

Sandstone Concretion

Ferruginous Sandstone Concretion (SiO2 + FeO(OH))

Dendritic Agate or Manganese Nodule in Chert/Limestone (Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions) — sedimentary

Dendritic Agate or Manganese Nodule in Chert/Limestone

Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions

Amygdaloidal Basalt (Basalt with Secondary Mineral Infillings) — igneous

Amygdaloidal Basalt

Basalt with Secondary Mineral Infillings

Sandstone (likely Greywacke or Siltstone variety) (Arenite / Siltstone (primarily SiO2)) — sedimentary

Sandstone (likely Greywacke or Siltstone variety)

Arenite / Siltstone (primarily SiO2)

Chert (Nodule) (Chert (Silicon dioxide, SiO2)) — sedimentary

Chert (Nodule)

Chert (Silicon dioxide, SiO2)

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

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Sandstone (Ferruginous) (Sandstone (primarily SiO2 with iron oxide cement Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with iron oxide cement Fe2O3)

Granite Glacial Erratic (Phaneritic Plutonic Felsic Rock (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 – SiO2)) — igneous

Granite Glacial Erratic

Phaneritic Plutonic Felsic Rock (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 – SiO2)

Quartz (Milky or Clear Quartz fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Clear Quartz fragment)

Silicon Dioxide (SiO2)

Sandstone (Stream-rounded) (Arenite (SiO2 based)) — sedimentary

Sandstone (Stream-rounded)

Arenite (SiO2 based)

Granite Gneiss River Rock (Gneiss) — Metamorphic

Granite Gneiss River Rock

Gneiss

Banded Agate (specifically Lake Superior Agate or similar) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Banded Agate (specifically Lake Superior Agate or similar)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Oolitic Limestone / Fossiliferous Chert (Oolitic Limestone (CaCO3) / Silicified Limestone) — sedimentary

Oolitic Limestone / Fossiliferous Chert

Oolitic Limestone (CaCO3) / Silicified Limestone

Chert Pebble with Quartz Veins (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble with Quartz Veins

Microcrystalline Quartz (SiO2)

Ironstone Concretion (Limonite/Goethite) (Ironstone (composed primarily of Goethite FeO(OH) and Limonite)) — sedimentary

Ironstone Concretion (Limonite/Goethite)

Ironstone (composed primarily of Goethite FeO(OH) and Limonite)

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

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Limonite after Pyrite (Prophecy Stone or Ironstone Concretion) (Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)) — mineral

Limonite after Pyrite (Prophecy Stone or Ironstone Concretion)

Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Chert (with Quartz Veining)

Microcrystalline Quartz (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartzite (River Cobble) (Quartzite (predominantly SiO2)) — metamorphic

Quartzite (River Cobble)

Quartzite (predominantly SiO2)

Malachite (Copper carbonate hydroxide [Cu2CO3(OH)2]) — mineral

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

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

Chert Breccia

Brecciated Chert (Microcrystalline Silica, SiO2)

Quartz (Peach/Orange variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Peach/Orange variety)

Silicon Dioxide (SiO2)

Jasper (Silicon dioxide, SiO2) — Mineral

Jasper

Silicon dioxide, SiO2

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

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Ferruginous Sandstone (Red Sandstone) (Arenite with Hematite/Limonite cement) — sedimentary

Ferruginous Sandstone (Red Sandstone)

Arenite with Hematite/Limonite cement

Bauxite (Bauxite (Al2O3·nH2O)) — sedimentary

Bauxite

Bauxite (Al2O3·nH2O)

Weathered Gabbro or Diorite (Igneous Cobble) (Phaneritic Basic/Intermediate Igneous Rock) — igneous

Weathered Gabbro or Diorite (Igneous Cobble)

Phaneritic Basic/Intermediate Igneous Rock

Glauconite (Greensand Articulated Sandstone) (Glauconite ((K, Na)(Fe, Al, Mg)2(Si, Al)4O10(OH)2)) — sedimentary

Glauconite (Greensand Articulated Sandstone)

Glauconite ((K, Na)(Fe, Al, Mg)2(Si, Al)4O10(OH)2)

Limonite Concretion (Limonite (FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Limonite (FeO(OH)·nH2O)

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

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Basalt with Red Inclusions (Aphanitic Mafic Igneous Rock (likely Basalt)) — igneous

Basalt with Red Inclusions

Aphanitic Mafic Igneous Rock (likely Basalt)

Leopard Skin Jasper (Silicified Rhyolite or Orbicular Jasper (SiO2)) — sedimentary

Leopard Skin Jasper

Silicified Rhyolite or Orbicular Jasper (SiO2)