Clear Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon dioxide (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Limestone with Calcite Crystals
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Red jasper (tumbled)
Jasper, microcrystalline quartz/chalcedony (SiO₂) colored mainly by iron oxides
Red Jasper (Banded Jasper)
Jasper (Silicon Dioxide, SiO2)
Jasper
Silicon dioxide (SiO2) with impurities
Optical Calcite
Calcium Carbonate (CaCO3)
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Quartz (Silicon Dioxide, SiO2)
Golden Calcite
Calcium Carbonate (CaCO3)
Emerald
Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Limestone
Calcareous Sedimentary Rock (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper (Iron-rich)
Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities
Blue-green chrysocolla rough specimen
Chrysocolla, hydrated copper aluminosilicate; commonly associated with malachite, quartz, and limonite
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 + various cementing minerals)
Orange Calcite
Calcium Carbonate (CaCO3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Sandstone (with manganese staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Likely chert or flint
Microcrystalline quartz (SiO₂), commonly called chert; exact identification requires testing
Limestone Pebble
Calcium Carbonate (CaCO3)
Chert (Commonly called Jasper or Flint)
Chert (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Chert (Chalcedony)
Microcrystalline quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (specifically Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Clear Quartz
Crystalline Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
White Quartz
Quartz (Silicon Dioxide, SiO2)
Black Jasper
Silicon Dioxide (SiO2) with impurities