Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
Category
Browse man made rock (sedimentary analogue) 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)
Bauxite
Bauxite (Al(OH)3, AlO(OH))
Coquina
Biogenic Limestone (mostly Calcium Carbonate, CaCO3)
Diamond
Diamond (pure Carbon, C)
Blue-dyed Quartz Druzy
Silicon Dioxide (SiO2) with artificial pigment
Chert (Jasper Variant likely)
Silicon Dioxide (SiO2)
Shale
Fissile mudrock (composed of clay-sized particles and detrital grains)
Shale
Fissile Siliciclastic Sedimentary Rock
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
Chalcanthite (Likely Synthetic/Lab-Grown)
Hydrated copper(II) sulfate (CuSO4·5H2O)
Chalk
Calcium Carbonate (CaCO3)
Chert (Flinty variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (and/or Flint)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert (and associated river cobbles)
Silicon dioxide (SiO2)
Banded Calcite (often commercially sold as 'Mexican Onyx' or 'Honey Onyx')
Calcite (Calcium Carbonate, CaCO3)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Pyrite
Iron Sulfide (FeS2)
Chert (Tan/Brown variety)
Chert (Silicon Dioxide, SiO2)
Chert (Nodule)
Chert (SiO2)
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
Chert (and Flint)
Silicon Dioxide (SiO2)
Gold
Native Gold (Au)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Shale
Shale (Lutite)
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
Sandstone
Quartz Sandstone (predominantly)
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Sandstone (Painted)
Arenite (primarily SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (variations include Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
Sandstone or Limestone
Sedimentary Rock
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)