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

Granite Pebble (Granite (Felsic Plutonic Rock)) — igneous

Granite Pebble

Granite (Felsic Plutonic Rock)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Diorite (Porphyritic/Water-worn Pebble) (Diorite) — igneous

Diorite (Porphyritic/Water-worn Pebble)

Diorite

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

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Siltstone (Siltstone (siliciclastic sedimentary rock)) — sedimentary

Siltstone

Siltstone (siliciclastic sedimentary rock)

Basalt River Stone (Aphanitic Mafic Volcanic Rock) — igneous

Basalt River Stone

Aphanitic Mafic Volcanic Rock

Unakite-veined Granite / Epidotized Granite (Epidotized Granite (FeCu2Al2(Si2O7)(SiO4)(OH)2)) — igneous

Unakite-veined Granite / Epidotized Granite

Epidotized Granite (FeCu2Al2(Si2O7)(SiO4)(OH)2)

Basalt Pebble (Basalt (SiO2 range 45-52%)) — igneous

Basalt Pebble

Basalt (SiO2 range 45-52%)

Black River Stone (likely Basalt or Chert) (Basalt (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Black River Stone (likely Basalt or Chert)

Basalt (primarily Plagioclase Feldspar and Pyroxene)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Beach Pebbles and Quartz Aggregates (Quartz pebbles and biogenic fragments (SiO2, CaCO3)) — sedimentary

Beach Pebbles and Quartz Aggregates

Quartz pebbles and biogenic fragments (SiO2, CaCO3)

Jasper (SiO2 (Cryptocrystalline quartz)) — mineral

Jasper

SiO2 (Cryptocrystalline quartz)

Sandstone (with Siltstone/Greywacke variations) (Sedimentary Rock (Clastic)) — sedimentary

Sandstone (with Siltstone/Greywacke variations)

Sedimentary Rock (Clastic)

Basalt Pebble (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt Pebble

Basalt (Mafic Extrusive Igneous Rock)

Chert Pebble (Jasper/Flint variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble (Jasper/Flint variant)

Microcrystalline Quartz (SiO2)

Stream Pebble (Basalt/Greywacke) (Mafic Igneous Rock (Fine-grained)) — igneous

Stream Pebble (Basalt/Greywacke)

Mafic Igneous Rock (Fine-grained)

Water-worn chalcedony pebble (Chalcedony, microcrystalline SiO₂; possibly iron-stained agate) — mineral

Water-worn chalcedony pebble

Chalcedony, microcrystalline SiO₂; possibly iron-stained agate

Granite Pebble (Granite (Plutonic Igneous Rock)) — igneous

Granite Pebble

Granite (Plutonic Igneous Rock)

River Cobble (likely Basalt or Chert) (Basalt (Mafic volcanic rock)) — igneous

River Cobble (likely Basalt or Chert)

Basalt (Mafic volcanic rock)

Green Jasper / Chert Pebbles (Microcrystalline Quartz (SiO2)) — sedimentary

Green Jasper / Chert Pebbles

Microcrystalline Quartz (SiO2)

Banded Sandstone (Arenite (Sandstone with iron oxide banding)) — sedimentary

Banded Sandstone

Arenite (Sandstone with iron oxide banding)

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

Chert (Pebble)

Silicon Dioxide (SiO2)

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

River Stone/Chert Pebble

Microcrystalline Quartz (SiO2)

Hag Stone (Calcareous sedimentary rock (often Chert, Flint, or Limestone)) — sedimentary

Hag Stone

Calcareous sedimentary rock (often Chert, Flint, or Limestone)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Dendritic Agate (River Pebble) (Silicon Dioxide (SiO2) with Manganese or Iron oxide inclusions) — mineral

Dendritic Agate (River Pebble)

Silicon Dioxide (SiO2) with Manganese or Iron oxide inclusions

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

River Cobble (Quartzite / Sandstone) (Quartzite / Siliciclastic Sedimentary Rock) — sedimentary

River Cobble (Quartzite / Sandstone)

Quartzite / Siliciclastic Sedimentary Rock

Quartz Pebble (Silicon Dioxide (SiO2)) — Mineral / Sedimentary occurrence

Quartz Pebble

Silicon Dioxide (SiO2)

Mineral / Sedimentary occurrence

White quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

White quartz pebble

Quartz (silicon dioxide, SiO₂)

Quartz Pebble (Crystalline Silica (SiO2)) — sedimentary

Quartz Pebble

Crystalline Silica (SiO2)

Jasper (Jasper (Silicon Dioxide, SiO2 with iron oxide inclusions)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2 with iron oxide inclusions)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Conglomerate (Polymictic Conglomerate) — sedimentary

Conglomerate

Polymictic Conglomerate

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

Jasper and Quartz Pebble

Silicon dioxide (SiO2) microcrystalline quartz

River Pebble (Siliceous rock fragment / Quartzite / Sandstone pebble) — sedimentary

River Pebble

Siliceous rock fragment / Quartzite / Sandstone pebble