Sandstone
Arenite
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Sandstone
Arenite
Pebble
Lithified clastic rock fragment / Quartz-rich pebble
Zebra Jasper (Zebra Stone)
Silicon Dioxide (SiO2) with iron oxide and manganese inclusions
Sandstone
Sandstone (composed predominantly of Quartz, SiO2, with Feldspar and Clay minerals)
Sandstone (Quartz Arenite)
Sandstone (dominated by SiO2 quartz grains)
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Sandstone
Clastic Sedimentary Rock
Bog Iron / Limonite Concretion
Goethite/Limonite mixture (FeO(OH)·nH2O)
Gypsum (Satin Spar / Alabaster variety)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Ruby in Zoisite
Anyolite (composite of Corundum Al2O3 and Zoisite Ca2Al3(SiO4)(Si2O7)O(OH))
Sandstone
Arenite (composed primarily of Quartz: SiO2)
Chert (Chert / Flint)
Microcrystalline Quartz (SiO2)
Chert (varietal: Flint/Jasper)
Silicon Dioxide (SiO2)
Fossil Sea Urchin (Echinoid)
Echinoidea fossil (often replaced by silica or calcite)
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
Malaysian 50 Sen Coin
Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)
Chert (Flint)
Silicon Dioxide (SiO2)
Sandstone (Pebble)
Arenite
Chert (Flint / Quartz Nodule)
Microcrystalline Quartz (SiO2)
Sandstone
Arenite
Chert (Flint / Jasper)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
Jasper
Silicon dioxide (SiO2) with impurities
Chert / Flint
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Chert / Flint
Silicon Dioxide (SiO2)
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Coquina
Bioclastic Limestone
Coquina
Bioclastic Limestone
Chert (Flint)
Microcrystalline quartz (SiO2)
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert or Jasper
Microcrystalline Quartz (SiO2)
Chert (Siltstone / Flint)
SiO2 (Cryptocrystalline Quartz)
Conglomerate
Conglomerate (Detrital sedimentary rock)
Sandstone
Arenite (siliciclastic sedimentary rock composed mostly of quartz)
Chalk
Micrite (primarily Calcium Carbonate or CaCO3)
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
Chert (with Quartz)
Microcrystalline Quartz (SiO2)
Sandstone (Water-worn Cobble)
Arenite (SiO2 with CaCO3 or Fe2O3 cement)