Rock Identifier

Category

Sedimentary (Chemically Precipitated) Or Metamorphic

Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.

Learn about Sedimentary (Chemically Precipitated) Or Metamorphic in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Ironstone

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

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

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Ruby (Pink to Red Corundum) (Al2O3 (Corundum with Chromium impurities)) — mineral

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

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

Chert / Flint

Microcrystalline quartz (SiO2)

Flint / Chert Pebble (Microcrystalline quartz (SiO2)) — sedimentary

Flint / Chert Pebble

Microcrystalline quartz (SiO2)

Chert (specifically Gray Chert) (Chert (SiO2)) — sedimentary

Chert (specifically Gray Chert)

Chert (SiO2)

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

Chert (Flint/Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert (Quartzite Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Quartzite Pebble)

Microcrystalline Quartz (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Milky Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — Mineral

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Pink Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Pink Quartzite Pebble

Quartzite (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix) — metamorphic

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Pyrite (Limonite Pseudo-morph after Pyrite) (Iron sulfide (FeS2) transitioning to Iron oxide-hydroxide (FeO(OH)·nH2O)) — mineral

Pyrite (Limonite Pseudo-morph after Pyrite)

Iron sulfide (FeS2) transitioning to Iron oxide-hydroxide (FeO(OH)·nH2O)

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)

Goethite pseudomorph after Pyrite (Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)) — mineral

Goethite pseudomorph after Pyrite

Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Kyanite (Kyanite (Al2SiO5)) — Mineral

Kyanite

Kyanite (Al2SiO5)

Ocean Jasper (Orbicular Jasper) (Silicon Dioxide (SiO2) with various inclusions) — sedimentary (geologically classified as a variety of chalcedony/quartz)

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) with various inclusions

sedimentary (geologically classified as a variety of chalcedony/quartz)

Quartz Vein in Schist (Quartz-rich Micaceous Schist (SiO2 + phyllosilicates)) — metamorphic

Quartz Vein in Schist

Quartz-rich Micaceous Schist (SiO2 + phyllosilicates)

Chert (River Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (River Pebble)

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky Crystal fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Smoky Crystal fragment)

Silicon Dioxide (SiO2)

Chert Concretion (Sedimentary Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert Concretion

Sedimentary Cryptocrystalline Quartz (SiO2)

Dyed Agate Slice (Chalcedony (Silicon Dioxide, SiO2) with artificial pigment) — mineral

Dyed Agate Slice

Chalcedony (Silicon Dioxide, SiO2) with artificial pigment

Chert (Gravel) (Chert (Microcrystalline Silicon Dioxide, SiO2)) — sedimentary

Chert (Gravel)

Chert (Microcrystalline Silicon Dioxide, SiO2)

Quartz in Greenstone (Metamorphic rock with quartz vein (SiO2 / mixed silicates)) — metamorphic

Quartz in Greenstone

Metamorphic rock with quartz vein (SiO2 / mixed silicates)

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

Quartz on Matrix

Silicon Dioxide (SiO2)

Chert / River Pebble (Silicon Dioxide (SiO2)) — sedimentary

Chert / River Pebble

Silicon Dioxide (SiO2)

Chert (specifically Cryptocrystalline Quartz) (Silicon dioxide (SiO2)) — sedimentary

Chert (specifically Cryptocrystalline Quartz)

Silicon dioxide (SiO2)

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Milky Quartz (with Iron Staining) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (with Iron Staining)

Silicon Dioxide (SiO2)

Serpentine (Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4) — metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Chert / Flint (Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Chert / Flint

Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)

Banded Calcite (often sold as 'Mexican Onyx') (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (often sold as 'Mexican Onyx')

Calcium Carbonate (CaCO3)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartzite (Quartzite (principally Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (principally Silicon Dioxide, SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)