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

Granodiorite (Water-worn Pebble) (Granodiorite) — igneous

Granodiorite (Water-worn Pebble)

Granodiorite

Orange Sapphire (Corundum (Al2O3 with trace elements)) — gemstone

Orange Sapphire

Corundum (Al2O3 with trace elements)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Mixed collection of natural stones (Several unidentified lithologies, likely including basalt, granite, quartzite, sandstone, and weathered metamorphic rocks) — igneous, metamorphic, sedimentary

Mixed collection of natural stones

Several unidentified lithologies, likely including basalt, granite, quartzite, sandstone, and weathered metamorphic rocks

igneous, metamorphic, sedimentary

Yellow Chert (Yellow Jasper) (Silicon dioxide (SiO2)) — sedimentary

Yellow Chert (Yellow Jasper)

Silicon dioxide (SiO2)

Basalt Cobble (Basalt) — igneous

Basalt Cobble

Basalt

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon Dioxide (SiO2)

Gabbro (Water-worn Pebble) (Phaneritic Mafic Igneous Rock) — igneous

Gabbro (Water-worn Pebble)

Phaneritic Mafic Igneous Rock

Milky Quartz Cobble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Cobble

Quartz (Silicon Dioxide, SiO2)

Diorite (River Pebble) (Intermediate Phaneritic Igneous Rock) — igneous

Diorite (River Pebble)

Intermediate Phaneritic Igneous Rock

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Pebble (likely Siltstone or fine-grained Sandstone) (Sedimentary Clastic Rock) — sedimentary

Pebble (likely Siltstone or fine-grained Sandstone)

Sedimentary Clastic Rock

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Conglomerate (Clastic sedimentary rock (Psephite)) — sedimentary

Conglomerate

Clastic sedimentary rock (Psephite)

Quartz (Variety: Citrine or Tumbled Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Variety: Citrine or Tumbled Chalcedony)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

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

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

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

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Weathered quartz-rich pebble (Likely quartzite or silicified granitoid; mainly microcrystalline quartz (SiO₂)) — igneous

Weathered quartz-rich pebble

Likely quartzite or silicified granitoid; mainly microcrystalline quartz (SiO₂)

Quartz Pebble (Water-worn) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Water-worn)

Silicon Dioxide (SiO2)

Banded Sandstone / Quartzite Pebble (Sedimentary quartz arenite with liesegang banding) — sedimentary

Banded Sandstone / Quartzite Pebble

Sedimentary quartz arenite with liesegang banding

Basalt River Stone (Basaltic Igneous Rock) — igneous

Basalt River Stone

Basaltic Igneous Rock

Granite Pebble (Intrusive Igneous Rock) — igneous

Granite Pebble

Intrusive Igneous Rock

Banded Rhyolite (Rhyolite (High-silica volcanic rock)) — igneous

Banded Rhyolite

Rhyolite (High-silica volcanic rock)

Chert (or Cryptocrystalline Quartz) (Silicon Dioxide (SiO2)) — sedimentary

Chert (or Cryptocrystalline Quartz)

Silicon Dioxide (SiO2)

Yellow Jasper (Silicon Dioxide (SiO₂)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO₂)

Conglomerate (Clastic sedimentary rock (Conglomerate)) — sedimentary

Conglomerate

Clastic sedimentary rock (Conglomerate)

Granite (Granite) — Igneous

Granite

Granite

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

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Basalt (Weathered/River worn) (Mafic Volcanic Rock (Primarily Plagioclase Feldspar and Pyroxene)) — igneous

Basalt (Weathered/River worn)

Mafic Volcanic Rock (Primarily Plagioclase Feldspar and Pyroxene)

Tumbled milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Quartz Pebble (with iron staining) (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Pebble (with iron staining)

Quartz (Silicon Dioxide, SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Jasper Pebble (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper Pebble

Jasper (Silicon Dioxide, SiO2)

River Cobble (Mixed Lithology) (Clastic Sedimentary Rock (Silicified Siltstone or Wacke)) — sedimentary

River Cobble (Mixed Lithology)

Clastic Sedimentary Rock (Silicified Siltstone or Wacke)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)