Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
Quartz Sandstone Pebble
Sandstone (SiO2 dominated)
Coquina Limestone
Coquina (Biogenic Limestone)
Flint (or Chert with cortex)
Silicon dioxide (SiO2)
Chert (Yellow Jasper/Flint)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (with Desert Varnish/Iron Stain)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Coquina / Fossiliferous Limestone
Coquina (composed primarily of Calcium Carbonate / CaCO3)
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Arrowhead Shard)
Microcrystalline silica (SiO2)
Chert
Microcrystalline Silicon Dioxide (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Red Chert (Jasper)
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Flint (or Chert)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon dioxide (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Sea Shell (Fighting Conch Fragment)
Calcium Carbonate (CaCO3) - Strombus alatus fragment
Coquina
Biogenic Limestone (CaCO3)
Chert
Microcrystalline Quartz (SiO2)
Crushed Stone / Gravel
Aggregatus saxum (variable mineral composition)
Chert (River Siltstone/Quartzite type)
Microcrystalline Quartz (SiO2)
Chert (often called Flint or Jasper)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz / Chert
Petrified Wood (Silicified Wood)
Silicified Paleoflora (mainly Quartz, SiO2)
Riverstone (Sandstone Pebble)
Arenite (SiO2 with various lithic fragments)
River Rock
Sedimentary Rock (various compositions)
Chert (varietal Flint)
Microcrystalline quartz (SiO2)
Pearl
Calcium Carbonate (CaCO3) with Conchiolin
Pyrite
Iron Disulfide (FeS2)