Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
mineral
Category
Mineral (Specifically A Mineraloid)
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
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Howlite
Howlite (Ca2B5SiO9(OH)5)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
mineral
Specular Hematite (Specularite) in Matrix
Specularite (Fe2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Granite
Phaneritic felsic intrusive igneous rock
igneous
Granite Pebble
Intrusive igneous rock (Quartz, Feldspar, Mica)
igneous
Granite
Felsic intrusive igneous rock
igneous
Basalt with Quartz Vein
Mafic volcanic rock with hydrothermal SiO2 filling
igneous
Granite
Felsic intrusive igneous rock
igneous
Glacial Cobbles (predominantly Granite and Gneiss)
Mixed lithologies (Quartz, Feldspar, Mica assemblage)
igneous and metamorphic
Mixed Crushed Stone
Aggregate (varied mineral composition)
igneous and sedimentary mixture
Milky Quartz in Shale
Silicon Dioxide (SiO2) in sedimentary host rock
mineral
Diamond (or Cubic Zirconia simulant)
C (Carbon) or ZrO2 (Zirconium Dioxide)
gemstone
Gabbro (Indigo Gabbro)
Gabbro (mafic intrusive igneous rock)
igneous
N/A - Image is non-geological
Acrylonitrile Butadiene Styrene (ABS) or Polypropylene (PP)
Synthetic material (Plastic/Polymer)
Note: Item is not a geological specimen
n/a
none
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive igneous rock
igneous
Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)
FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)
mineral
Granite Pebble
Phaneritic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
River Pebble
Quartzite / Weathered Sedimentary Rock
sedimentary
Sandstone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Basalt with Jasper Vein
Extrusive Igneous Rock with Quartz/Chalcedony Vein
igneous
Beach Pebble (Quartzite / Sandstone)
Quartz-rich sedimentary or metamorphic rock pebble
sedimentary
Granite
Intrusive igneous rock
igneous
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
River Pebble (likely Quartzite or Chert)
Sedimentary Clast (Silicon Dioxide dominant)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Mica Schist
Mica Schist
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
White Quartz Star
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Phaneritic Igneous Rock)
igneous
Granite Gneiss
Granitic Gneiss
Metamorphic
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
mineral
Granodiorite / Granite (Weathered)
Granodiorite
Igneous
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous