Gypsum Wallboard (Drywall)
Hydrous calcium sulfate (CaSO4·2H2O)
sedimentary (processed mineral product)
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Slag
Ferrous slag (by-product of iron smelting)
Mineraloid / Anthropogenic
Popcorn
Zea mays everta (P. Wilson) (Botanical name for the corn variety)
Organic/Biogenic
Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
mineral
Hematite Beads
Hematite (Fe2O3)
Mineral
Pyrite with Limonite/Goethite Alteration (Pseudomorph)
Iron Sulfide (FeS2) transitioning to Hydrated Iron Oxides (FeO(OH)·nH2O)
mineral
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
sedimentary
N/A - Non-Geological Item
not a rock/mineral
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Anthropogenic / Non-mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Rhodonite
Rhodonite (Mn2+SiO3)
mineral
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
mineraloid
N/A (Non-Geological Object)
N/A
Gypsum (Wallboard/Drywall)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
sedimentary
Specular Hematite with Quartz and Limonite
Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)
Mineral
Hematite
Hematite, Iron(III) oxide (Fe2O3)
mineral
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
metamorphic
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Specular Hematite
Specularite (Iron Oxide, Fe2O3)
mineral
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Orpiment
Orpiment (As2S3)
mineral
Sandstone (Ferruginous Concretion)
Ferruginous Sandstone Concretion / SiO2 with Fe2O3 cement
sedimentary
Shale (Ferruginous)
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Hematite
Hematite (Fe2O3)
mineral
Hematite (Iron Ore)
Hematite (alpha-Fe2O3)
mineral
Mica Schist
Mica Schist (primarily Muscovite and Biotite composition)
metamorphic
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Synthetic / Textile
Hematite
Iron(III) oxide (Fe2O3)
mineral
The user-provided image does not contain a rock or mineral specimen
N/A
Bituminous Coal
Organic sedimentary rock (humic coal)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Mica Schist with Garnet
Garnetiferous Mica Schist
metamorphic
Asphalt (Bituminous Concrete)
Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)
not a rock (anthropogenic material/technofossil)
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Hematite with Magnetite
Iron Oxide (Fe2O3)
mineral
Iron Slag
Ferrous Slag (Silicate/Oxide mixture)
industrial byproduct (anthropogenic)
Jasper with Iron Staining
Silicon Dioxide (SiO2) with impurities
sedimentary