Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Category
Browse manufactured stone specimens identified by the Rock Identifier community.
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Weathered Coastal Boulder)
Arenite (composed primarily of SiO2)
Quartzite River Pebble
Quartzite (primarily Silicon Dioxide, SiO2)
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Chert / Flint Pebble
Cryptocrystalline Quartz (SiO2)
Blue Dumortierite Quartz
Dumortierite in Quartz (AlAl6BSi3O12(O,OH)3)
Sandstone (Quartzose Pebble)
Clastic Sedimentary Rock (Litharenite/Quartz arenite)
Yellow Quartzite
Quartzite (SiO2)
Quartzite Pebble
Quartzite (primarily SiO2)
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Quartz (Milky or Iron-Stained)
Silicon Dioxide (SiO2)
Milky Quartz (Tumbled)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Rough Quartz (or Quartzite pebble)
Silicon Dioxide (SiO2)
Dumortierite Quartz
Dumortierite (Al7BO3(SiO4)3O3 / inclusion in SiO2)
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
Flint (Chert)
Cryptocrystalline Silica (SiO2)
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartzite
Quartzite (primarily SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Chert (specifically Flint or Dark Chert)
Chert (SiO2)
Orange Calcite and White Calcite
Calcium Carbonate (CaCO3)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Quartzite
Quartzite (SiO2 silicon dioxide)
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Sandstone (with Liesegang rings or Oxidation)
Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)
Crushed Limestone
Calcite-rich Sedimentary Rock (CaCO3)
Blue Kyanite
Kyanite (Al2SiO5)
Carborundum
Silicon Carbide (SiC)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Quartz Pebble
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Quartzite
Quartzite (primarily SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chiastolite (Andalusite)
Al2SiO5
Quartzite
Metamorphic Quartz Arenite
Basalt
Basalt