Rough Diamond
Diamond (Native Carbon, C)
mineral
Category
Industrial Byproduct
Browse industrial byproduct specimens identified by the Rock Identifier community.
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Iron meteorite fragment
Fe-Ni meteorite, likely an iron meteorite or stony-iron fragment
meteorite
Wollastonite
Calcium Inosilicate Mineral, CaSiO3
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Anthracite Coal
Anthracite (Carbon-based metamorphic rock)
metamorphic
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Ironstone (Limonitic Concretion)
Limonite (FeO(OH)·nH2O) with Goethite and Hematite inclusions
sedimentary
Ironstone (possibly Bog Iron or Limonite)
Goethite-rich Ironstone (FeO(OH))
sedimentary
Iron-stained Quartz Vein
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Basalt
Basalt (Mafic volcanic rock)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Granodiorite
Granodiorite
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartz-rich Rock
metamorphic
Bentonite Clay
Montmorillonite (Al2H2O12Si4)
sedimentary
Basalt
Basalt (Mafic volcanic rock)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Basalt (Phaneritic or Diabase)
Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)
igneous
Quartzite
Metamorphic rock primarily composed of Quartz (SiO2)
metamorphic
Black Sand (Magnetite/Heavy Mineral Concentrate)
Magnetite-rich Placers (Fe3O4)
sedimentary
Basalt with Vesicles
Vesicular Basalt (Mafic Extrusive)
igneous
Pumice
Pumice (a vesicular volcanic glass)
igneous
Basalt
Basalt
igneous
Bauxite
Aluminium ore consisting largely of the minerals gibbsite Al(OH)3, boehmite γ-AlO(OH) and diaspore α-AlO(OH)
sedimentary
Chalk (Sedimentary Limestone)
Calcite (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Granite Pebble
Granite (Felsic Intrusive Igneous Rock)
igneous
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (mostly SiO2)
metamorphic
Coal (Bituminous)
Bituminous Coal (C)
sedimentary
Limestone
Sedimentary rock composed primarily of Calcium Carbonate (CaCO3)
sedimentary
Basalt
Basalt (Ma-Fe Silicate)
igneous
Bituminous Coal
Humic coal (Carboniferous fossil fuel)
sedimentary
Diabase
Diabase (also known as Dolerite)
igneous
Greywacke
Dirty Sandstone (Lithic wacke)
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Pumice
Pumice (Amorphous volcanic glass)
igneous
Pumice
Pumice (a highly vesicular volcanic glass)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary