Vesicular Basalt
Basalt (with vesicular texture)
igneous
Community gallery
All rocks & minerals
Every specimen the Rock Identifier community has discovered, from desert agates to deep-sea basalts.
Chert
SiO2 (Microcrystalline Quartz)
sedimentary
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
River Stone (Basalt or Siltstone)
Mafic Volcanic Rock or Clastic Sedimentary Rock
igneous or sedimentary
Pumice
Pumicite (Volcanic glass with vesicular texture)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Chert (varietal: Flint/Jasper)
Silicon Dioxide (SiO2)
sedimentary
Shale
Argillaceous sedimentary rock
sedimentary
Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Sedimentary or Metamorphic (base substrate)
Chert with Druzy Quartz Geode
Microcrystalline Quartz (SiO2)
sedimentary
Desert Rose (Gypsum/Barite)
Gypsum (CaSO4·2H2O) or Barite (BaSO4) inclusion
sedimentary
Basalt
Basalt (Mafic volcanic rock)
igneous
Desert Rose (Sand Barite/Gypsum Rose)
Barium Sulfate (BaSO4) or Hydrated Calcium Sulfate (CaSO4·2H2O)
mineral
Fossilized Gastropod in Limestone
Gastropoda (Class) in Fossiliferous Limestone
sedimentary
White Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Granular)
Silicon Dioxide (SiO2)
mineral
Pumice
Pumice (Amorphous volcanic glass)
igneous
Chalky Limestone
Carbonate sedimentary rock (CaCO3)
sedimentary
Limestone or Chalk
Calcium Carbonate (CaCO3)
sedimentary
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Pumice
Pumice (volcanic glass with vesicular texture)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Calcareous Tufa / Limestone Fragment
Calcium Carbonate (CaCO3)
sedimentary
Coquina
Coquina (Limestone variant)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Flint)
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral