Rock Identifier

Category

Igneous Or Sedimentary (Water Worn)

Browse igneous or sedimentary (water worn) specimens identified by the Rock Identifier community.

Learn about Igneous Or Sedimentary (Water Worn) in the encyclopedia

Water Opal

Enhydro Quartz

Carbonatite

Clear Beryl

Ice Opal

Hyalite Opal

Iolite

Conglomerate

Jelly Opal

Clear Obsidian

Coldwater Agate

Clear Tourmaline

Clear Tourmaline

Unidentified dark pebble (Unknown) — rock

Unidentified dark pebble

Unknown

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Jasper and Quartz Pebble (Silicon Dioxide (SiO2) microcrystalline quartz variety) — sedimentary

Jasper and Quartz Pebble

Silicon Dioxide (SiO2) microcrystalline quartz variety

Basalt (Basalt) — igneous

Basalt

Basalt

Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

Gray River Pebble (likely Limestone or Siltstone) (Sedimentary Rock (Calcium Carbonate or Siliciclastic)) — sedimentary

Gray River Pebble (likely Limestone or Siltstone)

Sedimentary Rock (Calcium Carbonate or Siliciclastic)

Diorite (River Pebble) (Intermediate plutonic igneous rock) — igneous

Diorite (River Pebble)

Intermediate plutonic igneous rock

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

Chert (Flint / River Pebble)

Microcrystalline Quartz (SiO2)

Conglomerate (Polymictic Conglomerate) — sedimentary

Conglomerate

Polymictic Conglomerate

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

River Pebble (Chert/Quartzite)

Microcrystalline Quartz (SiO2)

Pebble (Lithified clastic rock fragment / Quartz-rich pebble) — sedimentary

Pebble

Lithified clastic rock fragment / Quartz-rich pebble

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

River Pebble (Quartzo-feldspathic rock fragment) — sedimentary

River Pebble

Quartzo-feldspathic rock fragment

River Pebble (Siliceous rock fragment) — sedimentary

River Pebble

Siliceous rock fragment

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

Chalcedony / Agate Pebble

Silicon Dioxide (SiO2)

Conglomerate (Conglomerate (Sedimentary Clastic Rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary Clastic Rock)

Water-worn brown pebble, possibly chert (Likely microcrystalline quartz (SiO₂); exact identification requires examination or testing) — sedimentary

Water-worn brown pebble, possibly chert

Likely microcrystalline quartz (SiO₂); exact identification requires examination or testing

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Pebble (Lithic fragment / Sedimentary clast) — sedimentary

Pebble

Lithic fragment / Sedimentary clast

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Basalt (Vesicular or Weathered) (Aphanitic Mafic Igneous Rock (Basalt)) — igneous

Basalt (Vesicular or Weathered)

Aphanitic Mafic Igneous Rock (Basalt)

Basalt (Polished) (Extrusive mafic igneous rock) — igneous

Basalt (Polished)

Extrusive mafic igneous rock

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

White Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

White Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine Quartzite) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartzite)

Silicon Dioxide (SiO2)

Banded Agate (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Banded Agate

Agate (Cryptocrystalline Quartz, SiO2)

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

River Pebble (Grantoid/Quartzite) (Quartz-rich igneous rock (Granitoid)) — igneous

River Pebble (Grantoid/Quartzite)

Quartz-rich igneous rock (Granitoid)

Unakite Epidote-Granite (Unakite (Epidotized Granite)) — metamorphic

Unakite Epidote-Granite

Unakite (Epidotized Granite)

Granodiorite Pebble (Granodiorite) — igneous

Granodiorite Pebble

Granodiorite

Granite Pebble (Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Mica)) — igneous

Granite Pebble

Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Mica)

Jasper with Hematite Inclusions (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)) — sedimentary

Jasper with Hematite Inclusions

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Quartz Pebble (Crystalline Silica (SiO2)) — mineral

Quartz Pebble

Crystalline Silica (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Granite (Granite (composed primarily of Quartz, Feldspar, and Mica/Amphibole)) — igneous

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica/Amphibole)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Quartzite Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Quartzite Pebble)

Silicon Dioxide (SiO2)