Rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous

Basalt (Weathered) (Extrusive mafic volcanic rock) — igneous

Basalt (Weathered)

Extrusive mafic volcanic rock

igneous

Basalt River Cobble (Basalt (Mafic Igneous Rock)) — igneous

Basalt River Cobble

Basalt (Mafic Igneous Rock)

igneous

Basalt River Pebble (Aphanitic Mafic Volcanic Rock) — igneous

Basalt River Pebble

Aphanitic Mafic Volcanic Rock

igneous

Basalt River Cobble (Basalt (Mafic Igneous Rock)) — igneous

Basalt River Cobble

Basalt (Mafic Igneous Rock)

igneous

Basalt (Africite (Mafic Igneous Rock)) — igneous

Basalt

Africite (Mafic Igneous Rock)

igneous

Basalt (Water-worn) (Aphanitic Mafic Igneous Rock) — Igneous

Basalt (Water-worn)

Aphanitic Mafic Igneous Rock

Igneous

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

igneous

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

igneous

Basalt (River Pebble) (Extrusive mafic igneous rock) — igneous

Basalt (River Pebble)

Extrusive mafic igneous rock

igneous

Basalt (Extrusive mafic volcanic rock) — igneous

Basalt

Extrusive mafic volcanic rock

igneous

Basalt (Water-worn Pebble) (Basalt (Mafic volcanic rock)) — Igneous

Basalt (Water-worn Pebble)

Basalt (Mafic volcanic rock)

Igneous

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous

Basalt (with Porphyritic or Amygdaloidal features) (Mafic Volcanic Rock (Basalt)) — igneous

Basalt (with Porphyritic or Amygdaloidal features)

Mafic Volcanic Rock (Basalt)

igneous

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous

Basalt (Mafic volcanic rock (Basalt)) — igneous

Basalt

Mafic volcanic rock (Basalt)

igneous

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

igneous

Basalt (River Stone) (Basalt (Extrusive Igneous Rock)) — igneous

Basalt (River Stone)

Basalt (Extrusive Igneous Rock)

igneous

Basalt Pebble (Basalt (Mafic volcanic rock)) — igneous

Basalt Pebble

Basalt (Mafic volcanic rock)

igneous

Basalt with Quartz/Plagioclase Inclusions (Mafic volcanic rock (Basaltic)) — igneous

Basalt with Quartz/Plagioclase Inclusions

Mafic volcanic rock (Basaltic)

igneous

Basalt River Stone (Extrusive mafic igneous rock) — igneous

Basalt River Stone

Extrusive mafic igneous rock

igneous

Basalt (Basalt (Extrusive volcanic rock)) — igneous

Basalt

Basalt (Extrusive volcanic rock)

igneous

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

Basalt Pebble

Mafic Igneous Rock (Basalt)

igneous

Basalt River Pebble (Aphanitic Mafic Igneous Rock) — igneous

Basalt River Pebble

Aphanitic Mafic Igneous Rock

igneous

Basalt (Beach Pebble) (Extrusive mafic igneous rock) — igneous

Basalt (Beach Pebble)

Extrusive mafic igneous rock

igneous

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

igneous

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

Granite fragment

Granite (Felsic Plutonic Rock)

igneous

Unidentified River Rock or Mudstone (N/A (Generic rock fragment)) — Sedimentary or Metamorphic

Unidentified River Rock or Mudstone

N/A (Generic rock fragment)

Sedimentary or Metamorphic

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary

Pumice (Pumice (Felsic volcanic rock)) — igneous

Pumice

Pumice (Felsic volcanic rock)

igneous

Sandstone (Red Sandstone) (Arenite (SiO2 based with Fe2O3 staining)) — sedimentary

Sandstone (Red Sandstone)

Arenite (SiO2 based with Fe2O3 staining)

sedimentary

Granite (Pink/Alkali Feldspar Granite) (Plutonic Igneous Rock (Granite)) — igneous

Granite (Pink/Alkali Feldspar Granite)

Plutonic Igneous Rock (Granite)

igneous

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous

Gneiss (Granulite / Foliated Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (Granulite / Foliated Metamorphic Rock)

Gneiss

metamorphic

Clear/White Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Sandstone (Ferruginous) (Arenite (SiO2 with Fe2O3 inclusions)) — sedimentary

Sandstone (Ferruginous)

Arenite (SiO2 with Fe2O3 inclusions)

sedimentary

Granitoid (River Pebble) (Granite (primarily Quartz, Feldspar, and Mica)) — igneous

Granitoid (River Pebble)

Granite (primarily Quartz, Feldspar, and Mica)

igneous

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

Fossilized Coral

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