Rock Identifier

Category

Mineral Within Sedimentary Rock

Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.

White Howlite (Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)) — mineral

White Howlite

Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)

Moqui Marble (Iron Oxide Concretion (Limonite/Hematite over Sandstone)) — sedimentary

Moqui Marble

Iron Oxide Concretion (Limonite/Hematite over Sandstone)

Carnelian Agate (Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)) — mineral

Carnelian Agate

Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)

Chert (variations include Chalcedony and Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Chalcedony and Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Hagstone/Adder Stone) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Hagstone/Adder Stone)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Amber (Succinite (with formula approximately C10H16O)) — Organic mineraloid

Amber

Succinite (with formula approximately C10H16O)

Organic mineraloid

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

Chert (specifically Flint)

Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Bumblebee Jasper (Fossiliferous Calcite containing Orpiment and Realgar) — sedimentary

Bumblebee Jasper

Fossiliferous Calcite containing Orpiment and Realgar

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Peridotite (Ultramafic intrusive rock (Peridotite)) — Igneous

Peridotite

Ultramafic intrusive rock (Peridotite)

Jasper (Jasper (Silicified microcrystalline quartz) - SiO2) — sedimentary

Jasper

Jasper (Silicified microcrystalline quartz) - SiO2

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

Jasper with Agate Inclusions (Silicon Dioxide (SiO2) - variety of Quartz/Chert) — sedimentary

Jasper with Agate Inclusions

Silicon Dioxide (SiO2) - variety of Quartz/Chert

Granite (Alkali-feldspar Granite) (Felsic Plutonic Rock (Primary minerals: Quartz SiO2, Orthoclase KAlSi3O8, Plagioclase (Na,Ca)AlSi3O8)) — igneous

Granite (Alkali-feldspar Granite)

Felsic Plutonic Rock (Primary minerals: Quartz SiO2, Orthoclase KAlSi3O8, Plagioclase (Na,Ca)AlSi3O8)

Rose Quartz (Rose Quartz (SiO2)) — Mineral

Rose Quartz

Rose Quartz (SiO2)

Pink Granite (Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)) — igneous

Pink Granite

Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)

Snowflake Obsidian (or similar porphyritic volcanic rock) (Obsidian with Spherulites (if glassy), or Porphyritic Rhyolite/Andesite (if crystalline groundmass)) — igneous

Snowflake Obsidian (or similar porphyritic volcanic rock)

Obsidian with Spherulites (if glassy), or Porphyritic Rhyolite/Andesite (if crystalline groundmass)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Chert (Jasper/Mudstone variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Mudstone variant)

Silicon Dioxide (SiO2)

Quartz (likely Milky Quartz) (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz (likely Milky Quartz)

Quartz (SiO₂ - Silicon Dioxide)

Limestone with Chert or Siltstone bands (Sedimentary carbonate rock (CaCO3) often with siliceous impurities) — sedimentary

Limestone with Chert or Siltstone bands

Sedimentary carbonate rock (CaCO3) often with siliceous impurities

Red Sandstone (Arenite (with Iron Oxide / Hematite cementation)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Orange Quartzite (Tumbled Beach Pebble) (Quartzite (primarily SiO2)) — metamorphic

Orange Quartzite (Tumbled Beach Pebble)

Quartzite (primarily SiO2)

Puddingstone (Gowganda Tillite/Jasper Conglomerate) (Jasper Conglomerate (SiO2 primary composition)) — sedimentary

Puddingstone (Gowganda Tillite/Jasper Conglomerate)

Jasper Conglomerate (SiO2 primary composition)

Chert (specifically Flint or Common Opal/Chalcedony mix) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Common Opal/Chalcedony mix)

Microcrystalline Quartz (SiO2)

Limestone (Weathered) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Weathered)

Calcium Carbonate (CaCO3)

Fossilized Coral (Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)) — sedimentary

Fossilized Coral

Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)

Agate (various color varieties) (SiO₂ (Silicon Dioxide)) — Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)

Agate (various color varieties)

SiO₂ (Silicon Dioxide)

Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)

Yellow Jasper (Jasper, a microcrystalline variety of Quartz (SiO2) with iron inclusions) — sedimentary

Yellow Jasper

Jasper, a microcrystalline variety of Quartz (SiO2) with iron inclusions

Quartz (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO2 - Silicon Dioxide)

Piddock-bored Mudstone (Lutite (Siltstone or Mudstone) with Pholad borings) — sedimentary

Piddock-bored Mudstone

Lutite (Siltstone or Mudstone) with Pholad borings

Carnelian (Carnelian (a variety of Chalcedony, SiO2)) — mineral

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Chert (Jasper variety) with Iron Oxide staining (Cryptocrystalline Quartz (SiO2) with Goethite/Limonite impurities) — sedimentary

Chert (Jasper variety) with Iron Oxide staining

Cryptocrystalline Quartz (SiO2) with Goethite/Limonite impurities

Red Sandstone (Iron-rich) (Ferruginous Sandstone (variable formula, primarily SiO2 + Fe2O3)) — sedimentary

Red Sandstone (Iron-rich)

Ferruginous Sandstone (variable formula, primarily SiO2 + Fe2O3)

Amethyst (Quartz (Silicon Dioxide with Iron impurities), SiO2) — mineral

Amethyst

Quartz (Silicon Dioxide with Iron impurities), SiO2

Kambaba Jasper (Stromatolite (Microbial mat fossil in silicified sediment)) — sedimentary

Kambaba Jasper

Stromatolite (Microbial mat fossil in silicified sediment)

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

Chert (specifically Flint or Jasper variant)

Silicon Dioxide (SiO2)

Blue Quartz (Aventurine) (Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite) — mineral

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Dolomite on Prehnite (Saddle-shaped Dolomite) (Dolomite [CaMg(CO3)2] on Prehnite [Ca2Al(AlSi3O10)(OH)2]) — mineral

Dolomite on Prehnite (Saddle-shaped Dolomite)

Dolomite [CaMg(CO3)2] on Prehnite [Ca2Al(AlSi3O10)(OH)2]

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

Chert (Green variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)