Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Category
Sedimentary Rock (Possibly Composed Of Various Minerals)
Browse sedimentary rock (possibly composed of various minerals) specimens identified by the Rock Identifier community.
Asphalt / Road Aggregate
Bituminous Conglomerate (synthetic)
sedimentary
Gold Nugget
Native Gold (Au)
mineral
River Stone (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock (Lithic Wacke / Siltstone)
sedimentary
Sandstone (with potential Quartzite characteristics)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Massive Quartz with Host Rock
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Chalcedony Nodule (Agate/Chert)
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartz Arenite)
Clastic Sedimentary Rock - Quartz Arenite
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Fe2O3 staining)
sedimentary
Jasper (specifically Chert/Ironstone)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Epidote in Quartz
Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)
Mineral
Sandstone (Greywacke/Siltstone variant)
Clastic Sedimentary Rock (Lithic Wacke)
sedimentary
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Banded Gneiss
Gneiss (pronounced 'nice')
metamorphic
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone with Calcite Vein
Clastic sedimentary rock (primarily SiO2) with Calcium Carbonate (CaCO3) infilling
sedimentary
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
sedimentary
Snowflake Obsidian
Volcanic glass with Spherulite inclusions (SiO2)
igneous
Sandstone (Quartzite-rich Pebble)
Arenite (primarily SiO2)
sedimentary
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with Fe2O3)
sedimentary
Conglomerate
Polymictic Conglomerate
sedimentary
Pink Granite (Alkali Feldspar Granite)
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8)
igneous
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Granite
Granite (Felsic Intrusive Igneous Rock)
igneous
Chalcedony on Matrix
Silicon Dioxide (SiO2)
mineral
Granite (specifically Rapakivi Granite)
Phaneritic Felsic Igneous Rock (Granite)
igneous
Sedimentary Sandstone (Sandstone Slab)
Arenite (SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Arenite
sedimentary
Quartz on Schist
Silicon Dioxide (SiO2) on Foliated Metamorphic Rock
metamorphic
Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Copper Ore (with Malachite and Azurite)
Hydroxide copper carbonate (Cu2CO3(OH)2 / Cu3(CO3)2(OH)2)
mineral
Quartz / Common Opal
Silicon Dioxide (SiO2)
mineral
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
sedimentary
Sandstone (with potentially metamorphic or basaltic bands)
Arenite / Lithic Wacke
sedimentary