Hematite / Goethite (Iron Ore)
Iron Oxide (Fe2O3 / FeO(OH))
mineral
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
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Crushed Limestone and Calcite
Calcium Carbonate (CaCO3)
sedimentary
Native Sulfur
Sulfur (S)
mineral
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
mineral (refined metal)
Hematite
Iron(III) oxide (Fe2O3)
mineral
Shale
Fissile Mudstone (primarily composed of clay minerals and quartz)
sedimentary
Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
mineral
Shale with Plant Fossils / Carbonaceous Shale
Laminated Mudrock (Siliciclastic)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Red Quartzite
Quartzite (primarily SiO2 with hematite impurities)
metamorphic
Mica Schist with Garnet
Garnetiferous Mica Schist
metamorphic
Hematite
Hematite (Fe2O3)
Mineral
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pink Granite
Phaneritic Plutonic Felsic Igneous Rock (Granite)
igneous
Pebble (likely Quartzite or Chert)
Clastic Sediment, potentially composed of SiO₂ (Quartz)
Mineral, Sediment
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock - Arenite
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Sandstone (with Lichen)
Arenite (primarily SiO2)
sedimentary
Sea Glass
Amorphous Silica (Anthropogenic glass) - SiO2
mineral
Gold (Processed)
Gold (Au)
Metal (Elemental Mineral)
Unable to identify - Image contains non-geological items
N/A
Dyed Pink Agate (Crackled)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Toast
Triticum aestivum (processed)
not a geological specimen
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
mineral
Blue Aragonite
Aragonite (Calcium Carbonate, CaCO3)
mineral
Botryoidal Hematite (Iron Stone Conglomerate)
Hematite (Fe2O3) in sedimentary matrix
sedimentary
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Slate
Foliated Metamorphic Slate
metamorphic
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
igneous, sedimentary, metamorphic, and mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Serpentine
Serpentinite (composed primarily of Mg3Si2O5(OH)4)
metamorphic
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
sedimentary (man-made/anthropogenic)
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
mineraloid
Red Shale
Lutite (primarily composed of Hydrous Aluminum Silicates with Hematite staining)
sedimentary
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Epidote
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral