Basalt
Basalt
Igneous
Category
Mineral Based Human Made Alloy
Browse mineral based human made alloy specimens identified by the Rock Identifier community.
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Chert (Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Jasper/Quartzite variant)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Jasper/Flint variant)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Limonite-stained Chert
Microcrystalline Quartz (SiO2) with Goethite/Limonite (FeO(OH)·nH2O)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variation)
Silicon dioxide (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Nodules
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variation)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint/Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Limonite/Goethite nodule
Goethite (FeO(OH)) with Hydrated Iron Oxides
mineral
Chert
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Chert with Iron Oxide Staining
Microcrystalline Quartz (SiO2) with Limonite/Goethite staining
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Opalite
Synthetic Opalite Glass
mineraloid (man-made)
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Synthetic/Man-made Polymer
Painted Pet Rock (Quartzite/Sandstone base)
Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments
sedimentary
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Sea Shell (Fighting Conch Fragment)
Calcium Carbonate (CaCO3) - Strombus alatus fragment
sedimentary (biogenic)
Tektite
Impactite (Natural Silicate Glass)
meteorite
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)
Sedimentary
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Banded Calcite (often commercially sold as 'Mexican Onyx' or 'Honey Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Granite
Felsic intrusive igneous rock
igneous
Basalt with Amygdaloidal Infilling
Porphyritic or Amygdaloidal Basalt
igneous
Diamond
Diamond (C)
Mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Opalite
Synthetic Opalised Glass
mineral
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Sandstone
Arenite
sedimentary
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Marble
Recrystallized Calcite (CaCO3)
metamorphic