Greenstone (Epidisite / Chlorite Schist)
Metabasalt (often contains Epidote Ca2Al2(Fe3+,Al)(SiO4)(Si2O7)O(OH) and Chlorite)
metamorphic
Category
Igneous, Sedimentary, Or Metamorphic (Mineral Based)
Browse igneous, sedimentary, or metamorphic (mineral based) specimens identified by the Rock Identifier community.
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Iron Oxide inclusions
sedimentary
Dendritic Jasper (Bumblebee like Agate)
Silicon Dioxide with inclusions (SiO2)
sedimentary
Banded Gneiss
Gneiss (quartz-feldspar-biotite metamorphic rock)
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Leopard Skin Jasper
Rhyolite (Silicon Dioxide with impurities), SiO2
igneous
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
White Quartz Sphere
Silicon Dioxide (SiO2)
mineral
K2 Jasper (K2 Granite)
Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)
igneous
Gneiss (specifically Biotite Gneiss)
Gneiss (high-grade metamorphic rock primarily composed of Silicates)
metamorphic
Banded Agate (specifically Moss Agate or Plume Agate variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Conglomerate
Conglomerate (Detrital sedimentary rock)
sedimentary
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Quartz
Quartz (SiO₂)
Mineral
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Sodalite (blue beads) and Clear Quartz (clear beads)
Sodalite: Na4Al3Si3O12Cl; Quartz: SiO2
mineral
Conglomerate
Conglomerate (Clastic sedimentary rock)
sedimentary
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Mineral
Favosites Fossil (Honeycomb Coral)
Favosites sp. (Extinct genus of tabulate coral)
sedimentary
Laterite
Lateritic Soil/Rock (rich in Fe2O3 and Al2O3)
sedimentary
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Dendritic Opal (Common Opal)
Amorphous Hydrated Silica (SiO2·nH2O) with Manganese or Iron Oxide inclusions
mineral
Unknown Organic Object (likely a berry or fruit)
Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.
Organic Material (likely a fruit or berry)
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
metamorphic
Corundum
Corundum (Aluminium oxide, Al2O3)
mineral
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous
Orange Calcite (likely polished specimen)
Calcite
Mineral
Gabbro
Gabbro (Mafic Plutonic Rock)
igneous
Quartz with Mica (likely Muscovite)
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride
igneous/metamorphic
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Milky Quartz
Silicon dioxide (SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Quartz
SiO₂ (Silicon Dioxide)
Mineral
Green Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
White Topaz
Al2SiO4(F,OH)2
mineral
Quartz
Quartz (SiO₂)
Mineral
Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral