Sandstone with Iron Oxide
Arenite (SiO2 with Fe2O3 staining)
sedimentary
Category
Man Made Rock (Sedimentary Analogue)
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
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Limestone
Sedimentary rock composed primarily of Calcite (CaCO3)
sedimentary
Sandstone (specifically an Iron-Concretion)
Arenite with Iron Oxide (Limonite/Goethite) cementation
sedimentary
River Pebble (Siltstone / Sandstone Pebble)
Sedimentary Rock (Quartz, Feldspar, Clay Minerals)
sedimentary
Hag Stone
Perforated sedimentary rock (typically sandstone or limestone)
sedimentary
Red Sandstone Pebble
Arenite (Iron-oxide stained)
sedimentary
Crushed Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Chert with Brachiopod Impression
Chert (SiO2) containing Brachiopoda fossil remains
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Pebble)
Sandstone (SiO2 dominated with minor feldspar/clay)
sedimentary
Sandstone (likely Graywacke or Arkose)
Arenite
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
sedimentary
Bivalve Fossil (Cockle shell)
Class Bivalvia (e.g., Anadara or Veneridae family)
fossil
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz Sand Grain / Micro Crystal
Silicon Dioxide (SiO2)
mineral
Sandstone (Red Sandstone)
Arenite (predominantly SiO2 with Fe2O3 cement)
sedimentary
Gneiss
Foliated Metamorphic Rock
metamorphic
Chert / Flint Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Banded Chert
Silicon Dioxide (SiO2)
sedimentary
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
mineral (synthetic/man-made coating)
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Antropogenic (Man-made industrial byproduct)
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Non-geological / Man-made textile
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Jasper (Yellow Jasper)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Agate (Carnelian / Chalcedony pebble)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Quartz Pebble
Silicon Dioxide (SiO2) Pebble
sedimentary
River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)
Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)
Sedimentary
Cockle Shell Fossil
Cardium (Bivalvia)
fossil
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Geode / Fossilized Gastropod or Shell Cast
Silicon dioxide (Quartz) replacement / fossil mold
sedimentary
Carnelian
SiO2 (Silicon Dioxide - Chalcedony variant)
mineral