Not A Rock

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

Sandstone (Arenite (SiO2 based sedimentary rock)) — sedimentary

Sandstone

Arenite (SiO2 based sedimentary rock)

sedimentary

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

sedimentary

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary

Sandstone (likely Arkosic or Lithic Sandstone) (Sandstone (SiO2 predominant)) — sedimentary

Sandstone (likely Arkosic or Lithic Sandstone)

Sandstone (SiO2 predominant)

sedimentary

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary

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

Basalt

Basalt (Mafic Extrusive Igneous Rock)

igneous

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

metamorphic

Sandstone (Arenite (Siliclastic Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Siliclastic Sedimentary Rock)

sedimentary

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

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Siltstone / Shale River Rock (Siltstone (primarily SiO2 with Al2O3)) — sedimentary

Siltstone / Shale River Rock

Siltstone (primarily SiO2 with Al2O3)

sedimentary

Yellow Jasper / Chalcedony (Silicon Dioxide (SiO2) with iron inclusions) — mineral

Yellow Jasper / Chalcedony

Silicon Dioxide (SiO2) with iron inclusions

mineral

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

sedimentary

Coarse Sandstone Pebble (Clastic Sedimentary Rock (Sandstone)) — sedimentary

Coarse Sandstone Pebble

Clastic Sedimentary Rock (Sandstone)

sedimentary

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

sedimentary

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

Granitoid (River Pebble)

Granite (primarily Quartz, Feldspar, and Mica)