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

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

Chalcedony (Agate / Quartz Pebble)

Silicon Dioxide (SiO2)

River Pebble (Greywacke or Chert mix) (Silicon Dioxide (SiO2) with varying mineral impurities) — sedimentary

River Pebble (Greywacke or Chert mix)

Silicon Dioxide (SiO2) with varying mineral impurities

Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — mineral

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

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

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Granite (Phaneritic intrusive igneous rock (primarily SiO2)) — igneous

Granite

Phaneritic intrusive igneous rock (primarily SiO2)

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

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Pink Granite Cobble (Phaneritic Felsic Plutonic Rock (Granite)) — igneous

Pink Granite Cobble

Phaneritic Felsic Plutonic Rock (Granite)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (with probable inclusions or staining) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Pebble (with probable inclusions or staining)

Quartz (Silicon Dioxide - SiO2)

Chert Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble

Microcrystalline Quartz (SiO2)

Porphyritic Basalt or Diabase (Porphyritic Igneous Rock) — igneous

Porphyritic Basalt or Diabase

Porphyritic Igneous Rock

Quartz Vein in River Siltstone (Crystalline Quartz (SiO2) in Siliclastic Matrix) — sedimentary

Quartz Vein in River Siltstone

Crystalline Quartz (SiO2) in Siliclastic Matrix

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Jasper Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper Pebble

Microcrystalline Quartz (SiO2)

Jasper (Banded / Brecciated Jasper Pebble) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Jasper (Banded / Brecciated Jasper Pebble)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Granite Cobble (Phaneritic Felsic Igneous Rock) — igneous

Granite Cobble

Phaneritic Felsic Igneous Rock

Pink Granite (Pink Granite (Felsic Intrusive Igneous Rock)) — igneous

Pink Granite

Pink Granite (Felsic Intrusive Igneous Rock)

Conglomerate (Clastic Conglomerate (Lithic-rich)) — sedimentary

Conglomerate

Clastic Conglomerate (Lithic-rich)

Basalt Pebble with Vesicles (Vesicular Basalt) — igneous

Basalt Pebble with Vesicles

Vesicular Basalt

Granitic Gneiss Pebble (Gneiss (felsic metamorphic rock)) — metamorphic

Granitic Gneiss Pebble

Gneiss (felsic metamorphic rock)

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

Porphyritic Igneous Rock / Basalt or Andesite Xenolith in Granite or Quartzite (Silicate rock with contrasting xenolith/inclusion) — igneous

Porphyritic Igneous Rock / Basalt or Andesite Xenolith in Granite or Quartzite

Silicate rock with contrasting xenolith/inclusion

River Stone (Grey Andesite) (Intermediate extrusive volcanic rock (Andesite)) — igneous

River Stone (Grey Andesite)

Intermediate extrusive volcanic rock (Andesite)

Diorite (Dalmatian Stone) (Diorite (Intermediate Plutonic Rock)) — igneous

Diorite (Dalmatian Stone)

Diorite (Intermediate Plutonic Rock)

Pink Granite (Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)) — igneous

Pink Granite

Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)

Yellow Agate (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Yellow Agate

Chalcedony (cryptocrystalline Quartz), SiO2

Painted Garden Rock (Coated Siltstone or Mudstone) — sedimentary

Painted Garden Rock

Coated Siltstone or Mudstone

Sandstone (with Quartz Vein/Inclusion) (Arenite (primarily SiO2)) — sedimentary

Sandstone (with Quartz Vein/Inclusion)

Arenite (primarily SiO2)

Agate (Chalcedony Nodule) (Silicon Dioxide (SiO2)) — mineral

Agate (Chalcedony Nodule)

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)

Granite Pebble (Phaneritic plutonic rock (Quartz-Alkali Feldspar-Plagioclase)) — igneous

Granite Pebble

Phaneritic plutonic rock (Quartz-Alkali Feldspar-Plagioclase)

Basalt Porphyry (Porphyritic Basalt) — igneous

Basalt Porphyry

Porphyritic Basalt

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

Quartz (Milky or Smoky)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Rough Sapphire (possibly Yellow/Green Corundum) (Corundum (Al2O3)) — mineral

Rough Sapphire (possibly Yellow/Green Corundum)

Corundum (Al2O3)

Small rounded pebble (likely quartz or quartz-rich stone) (Uncertain; possibly microcrystalline quartz (SiO₂)) — mineral

Small rounded pebble (likely quartz or quartz-rich stone)

Uncertain; possibly microcrystalline quartz (SiO₂)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

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)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)