Quartz
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Man Made)
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
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Jasper with Dendritic Inclusions
Microcrystalline Quartz (SiO2) with manganese or iron oxide inclusions
sedimentary
Ironstone Concretion
Ironstone (primarily Siderite or Limonite)
sedimentary
Botryoidal Quartz or Chalcedony
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fossil Coral
Cnidaria Anthozoa (Fossilized)
sedimentary
Weathered Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Black Shale
Argillaceous Chert/Shale
sedimentary
Sandstone
Arenite (SiO2 with various cementing agents)
sedimentary
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Limestone (with Chert)
Calcium Carbonate (CaCO3) / Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Bituminous Coal
Bituminous coal (Carbonaceous sedimentary rock)
sedimentary
Flint / Chert
Microcrystalline Quartz (SiO2)
sedimentary
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
mineral
Blue Chalcedony (likely dyed Agate)
Silicon Dioxide (SiO₂)
mineral
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Chert (or possibly Flint)
SiO2 (Silicon Dioxide)
Sedimentary Rock
Asphalt
Asphalt concrete
sedimentary
Thunderegg (Agate or Quartz Geode)
Silica-filled rhyolitic nodule (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Sand
Silicon Dioxide (SiO2)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Fossiliferous Limestone (Shell Fragment)
Biogenic Limestone (Calcium Carbonate / CaCO3)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Marble (White)
Metamorphosed Limestone (mainly CaCO3)
metamorphic