Carnelian
Carnelian (SiO2)
mineral
Category
Mineral (Synthetic)
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
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Mica-rich Schist fragment
Mica Schist
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)
igneous
Picture Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Ocean Jasper (Orbicular Jasper)
Silica (SiO2) with varied mineral inclusions
mineralogical specimen
Fancy Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Sandstone (likely Siltstone variety)
Arenite / Siltstone (primary mineral SiO2)
sedimentary
Chert (Serpentinized)
Silicon Dioxide (SiO2) with mineral staining
sedimentary
Smoky Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Rough Emerald
Emerald (Beryl), Be3Al2(SiO3)6
mineral
Schist
Mica Schist
metamorphic
Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Selenite (Satin Spar)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Chrysocolla Cuprite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)
mineral composite
Strawberry Quartz
Quartz (SiO2) with inclusions of Goethite or Hematite
Mineral
Fossilized Shark Tooth
Fossilised Chondrichthyes dental specimen (likely Otodus or Carcharias sp.)
mineral
Amygdaloidal Basalt
Basalt (Igneous Volcanic Rock with secondary mineral infilling)
igneous
Amygdaloidal Basalt
Basalt with secondary mineral infilling (commonly SiO2 or Zeolites)
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)
igneous
Chrysocolla
Hydrated copper phyllosilicate, Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)
mineral
Amygdaloidal Basalt with Epidote
Vesicular Basalt with secondary Epidote/Quartz mineral infill
igneous
Tiger's Eye
Tiger's Eye (SiO2 with crocidolite inclusions)
mineral
Amygdaloidal Basalt with Epidote
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Diamond
Diamond (pure carbon, C)
mineral
Granite
Granite
Igneous
Granite
Phaneritic Plutonic Felsic Rock
igneous
Limonite
Hydrous Iron Oxide (often Goethite FeO(OH), Lepidocrocite γ-FeO(OH), and other amorphous iron oxyhydroxides)
Mineral
Quartz on Feldspar
Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Sandstone (Calcareous or Ferruginous)
Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)
sedimentary
Greenschist
Greenschist (Chlorite-Albite-Epidote Schist)
metamorphic
Jasper (var. Ocean or Polychrome Jasper)
Silicon Dioxide (SiO2) with iron and mineral inclusions
sedimentary
Brecciated Chert
Sedimentary Chert (SiO2) with Calc-Silicate mineralization
sedimentary
Vesicular Basalt with Amygdaloidal Infill
Basalt (Mafic Extrusive Igneous Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Blue Apatite
Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Milky or Greenish Quartz Pebble
Silicon Dioxide (SiO2)
mineral