Petrified Wood (Silicified Fossil)
Silicified Wood (SiO2)
Category
Browse anthropogenic material (man made sedimentary mimic) specimens identified by the Rock Identifier community.
Petrified Wood (Silicified Fossil)
Silicified Wood (SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (primarily SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 primarily)
Mixed Gemstone Beaded Jewelry
Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)
Sandstone
Arenite
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz, SiO2)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (Sandstone)
Sandstone
Arenite (primarily SiO2)
Jasper
Silicon Dioxide (SiO2)
Chert (often called Flint when in chalk or limestone)
Silicon Dioxide (SiO₂)
Agatized Fossil or Chalcedony Nodule
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Limonite
Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O
Fluorite (Green Fluorite)
Calcium Fluoride (CaF2)
Sandstone
Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)
Sandstone (Quartzose type)
Arenite (primarily SiO2)
Sandstone (specifically Banded Sandstone)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)
Sandstone
Arenite (primarily composed of SiO2 - Silicon Dioxide)
Sandstone
Arenite (Clastic Sedimentary Rock)
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Jasper
Silicon dioxide (SiO2) with impurities
Red Jasper
Silicon Dioxide (SiO2)
Sandstone (likely Siltstone or fine-grained Sandstone)
Sedimentary Rock (Clastic)
Sandstone
Quartz Sandstone (predominantly)
Sandstone (likely Fossiliferous)
Arenite / Sedimentum arenaceum
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)
Sandstone
Arenite
Sandstone
Arenite (primarily Quartz, SiO2)
Sandstone
Arenite
Fossil Shell (Bivalve)
Phylum Mollusca, Class Bivalvia (typically composed of Calcium Carbonate / CaCO3)
Limonite
FeO(OH)·nH2O (Hydrated iron oxide)
Sandstone
Arenite (primarily SiO2 with trace Fe2O3)