Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Concrete fragment or Conglomerate
Artificial Conglomerate (Concrete) or Natural Conglomerate
Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
Green Sea Glass
Man-made silicate glass (weathered)
Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
Red Sandstone or Brick Fragment
Arenite (if sandstone)
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
Diamond (or Simulant)
Carbon (C)
Asphalt (Bituminous Concrete)
Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)
Sea Glass
Silicon dioxide (mostly)
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
Blue-green chrysocolla rough specimen
Chrysocolla, hydrated copper aluminosilicate; commonly associated with malachite, quartz, and limonite
Sandstone Concretion
Clastic Sedimentary Concretion (SiO2 with Iron Oxide)
Weathered iron-rich concretion or ironstone nodule
Goethite–hematite limonite concretion (FeO(OH), Fe₂O₃, and hydrated iron oxides)
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
Crackle Agate / Dyed Quartz
SiO2 (Silicon Dioxide)
Engineered Quartz (Quartzite look-alike)
Silicon Dioxide (SiO2) composite
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Sandstone Concretion
Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)
Concretion
Sedimentary Concretion (Ironstone / Calcite Concretion)
Dyed Agate
Chalcedony (SiO2)
Painted River Rock
Artificially Coated Sedimentary Rock
Onyx (Black) and Mother of Pearl Inlay
Silicon Dioxide (SiO2) for Onyx; Aragonite (CaCO3) for Mother of Pearl
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
Sandstone (with Liesegang rings or joints)
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
Diabase (Dolerite)
Diabase
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Sea Glass
Man-made silicate glass
Opalite
Man-made opalized glass
Goldstone
Aventurine Glass (Man-made)
Slag Glass
Amorphous Silicate (Man-made)
Ring with an Orange Inlay
N/A (Man-made object)