Sandstone (Quartzose Pebble)
Arenite (composed primarily of SiO2)
Category
Browse sedimentary rock specimens identified by the Rock Identifier community.
Sandstone (Quartzose Pebble)
Arenite (composed primarily of SiO2)
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Sandstone
Arenite (primarily SiO2 with iron oxide cementation)
Dyed Agate
Silicon Dioxide (SiO2)
Red Sandstone
Arenite
Sandstone Flagstone
Arenite (SiO2 with various cementing agents)
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite (composed primarily of SiO2)
Banded Chert
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)
Septarian Nodule
Septarian Concretion (CaCO3, CaMg(CO3)2, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chert (Jasper-bearing)
Chert (Silicon Dioxide, SiO2)
Gneiss (Banded Gneiss)
Gneiss
Agate
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (Banded)
Microcrystalline Quartz (SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Biotite Schist with Garnet
Garnet-Biotite Schist
Halite
Halite (Sodium Chloride, NaCl)
Seam Agate
Agate (Banded variety of Chalcedony, SiO2)
River Pebble (Gneiss or Quartzite mixture)
Metamorphic rock (Commonly Gneissic)
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
Quartz Druzy in Brecciated Matrix
Silicon Dioxide (SiO2) in Lithic Breccia
Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
Fossiliferous Shale (with Vertebrate Bones)
Laminated Mudstone containing Fossilized Bone (Apatite)
Slate
Slate (foliated metamorphic rock)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Garnet Schist
Almandine-mica schist
Sandstone (Quartz-rich Pebble)
Arenite (primarily SiO2)
Gneiss
Gneiss
Gneiss
Gneiss
Red Quartz (Druzy)
Silicon Dioxide (SiO2) with Hematite inclusions
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Mica Schist
Mica Schist
Chert (Pink and Yellow Chert)
Microcrystalline Quartz (SiO2)