Rock Identifier

Category

Sedimentary (With Some Aspects Of Mineral Replacement)

Browse sedimentary (with some aspects of mineral replacement) specimens identified by the Rock Identifier community.

Pyrite (Pyrite (Iron sulfide, FeS₂)) — Mineral

Pyrite

Pyrite (Iron sulfide, FeS₂)

Feldspar (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8) — mineral

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8

Jasper with Quartz Vein (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper with Quartz Vein

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Amber (Succinicum (C10H16O)) — mineral

Amber

Succinicum (C10H16O)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

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

Chert / Flint

Microcrystalline Quartz (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Fluorite (translucent octahedral crystal) (Calcium fluoride (CaF2)) — mineral

Fluorite (translucent octahedral crystal)

Calcium fluoride (CaF2)

Dalmatian Stone (Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)) — igneous

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)

Sandstone (likely Graywacke or Arkose variant) (Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)) — sedimentary

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Banded Gneiss (Gneiss (Metamorphic high-grade rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic high-grade rock)

Chert (specifically Flint or Jasper-Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Jasper-Chert)

Silicon Dioxide (SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Chert Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Quartz (SiO2)

Sandstone Beach Pebble (Clastic sedimentary rock (SiO2 with iron oxide cement)) — sedimentary

Sandstone Beach Pebble

Clastic sedimentary rock (SiO2 with iron oxide cement)

Chert (Common Opal/Jasper variety) (Microcrystalline Quartz (SiO2) with hydration) — sedimentary

Chert (Common Opal/Jasper variety)

Microcrystalline Quartz (SiO2) with hydration

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Orthoceratid Fossil in Limestone (Orthoceras (extinct genus of Nautiloid Cephalopod)) — sedimentary

Orthoceratid Fossil in Limestone

Orthoceras (extinct genus of Nautiloid Cephalopod)

Ironstone Concretion (Limonite/Goethite) (Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion (Limonite/Goethite)

Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Chert (variant of Flint) (Chert (SiO2)) — Sedimentary

Chert (variant of Flint)

Chert (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Fossilized Sea Urchin (Echinoid) (Echinoidea (Class); commonly Clypeasteroida for sand dollar types) — sedimentary (fossil)

Fossilized Sea Urchin (Echinoid)

Echinoidea (Class); commonly Clypeasteroida for sand dollar types

sedimentary (fossil)

Green Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with impurities

Geode (Quartz chalcedony variety) (SiO2 (Silicon Dioxide)) — sedimentary

Geode (Quartz chalcedony variety)

SiO2 (Silicon Dioxide)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Magnetite Orthorthotropic Rock (Magnetite (Fe3O4)) — mineral

Magnetite Orthorthotropic Rock

Magnetite (Fe3O4)

Blue Celestite (with Galena) (Strontium sulfate (SrSO4) and Lead sulfide (PbS)) — mineral

Blue Celestite (with Galena)

Strontium sulfate (SrSO4) and Lead sulfide (PbS)

Chert (Limestone-based) (Silicon dioxide (SiO2)) — sedimentary

Chert (Limestone-based)

Silicon dioxide (SiO2)

Shale (with minor calcite veining) (Clastic sedimentary rock (primarily clay minerals and quartz)) — sedimentary

Shale (with minor calcite veining)

Clastic sedimentary rock (primarily clay minerals and quartz)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Fossil Bivalve Shell (Class Bivalvia (e.g., Veneriidae family)) — sedimentary

Fossil Bivalve Shell

Class Bivalvia (e.g., Veneriidae family)

Fluorite (Fluorite (CaF₂)) — mineral

Fluorite

Fluorite (CaF₂)

Chert (Jasper variety) (Silicon dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Jasper variety)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Chert (Jasper variety) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz