Rock Identifier

Category

Metamorphic Or Sedimentary (With Staining)

Browse metamorphic or sedimentary (with staining) specimens identified by the Rock Identifier community.

Sandstone (Ferruginous) (Arenite with Iron oxide staining (SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

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

Chert (specifically Jasper or Flint variety)

Cryptocrystalline Quartz (SiO2)

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

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Quartz Geode with Goethite/Hematite (Silicon Dioxide (SiO2) with Iron Oxides) — mineral

Quartz Geode with Goethite/Hematite

Silicon Dioxide (SiO2) with Iron Oxides

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

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Chert (River Pebble) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline quartz (SiO2)

Chert (specifically Iron-stained River Cobble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Iron-stained River Cobble)

Silicon Dioxide (SiO2)

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

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Sandstone (likely Quartzose Sandstone) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone

Arenite (primarily Quartz, SiO2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)

Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily Quartz, SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Milky or Iron-Stained Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky or Iron-Stained Quartz

Quartz (Silicon Dioxide, SiO2)

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

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Sandstone (Ferruginous) (Arenite (with Iron Oxide)) — sedimentary

Sandstone (Ferruginous)

Arenite (with Iron Oxide)

Ferruginous Quartz (Carnelian-tinted Quartz) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Ferruginous Quartz (Carnelian-tinted Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartz Geode (Silicon Dioxide (SiO₂)) — mineral

Quartz Geode

Silicon Dioxide (SiO₂)

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

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

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

Sandstone (likely Quartzose Sandstone pebble)

Arenite (primarily SiO2)

Zoisite with Ruby (Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)) — metamorphic

Zoisite with Ruby

Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)

Pyrite in Matrix (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix (Fool's Gold)

Iron Sulfide (FeS2)

Sandstone (with potential mineral staining/concretions) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily Quartz, SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Liesegang Ring Siltstone (Siltstone with iron oxide Liesegang bands) — sedimentary

Liesegang Ring Siltstone

Siltstone with iron oxide Liesegang bands

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

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

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

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Quartz Geode (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

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

Chert (Iron-stained)

Chert (SiO2 - Silicon Dioxide)

Siltstone with iron staining (Siltstone (primarily SiO2 with FeO(OH) coatings)) — sedimentary

Siltstone with iron staining

Siltstone (primarily SiO2 with FeO(OH) coatings)

Chert (often called Flint or Jasper based on color) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper based on color)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)

Fossil / Permineralized Bone (Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)) — sedimentary

Fossil / Permineralized Bone

Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)

Sandstone (Ferruginous) (Arenite (composed primarily of SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Sandstone (with Liesegang rings or joints) (Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)) — sedimentary

Sandstone (with Liesegang rings or joints)

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)

Chert (Jasper-bearing) (Microcrystalline silica (SiO2) with iron oxide inclusions) — sedimentary

Chert (Jasper-bearing)

Microcrystalline silica (SiO2) with iron oxide inclusions

Green Jasper with Quartz veins (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Green Jasper with Quartz veins

Jasper (Silicon Dioxide, SiO2)

Glauconitic Sandstone (Glauconitic Quartz Arenite) — sedimentary

Glauconitic Sandstone

Glauconitic Quartz Arenite