Moonstone
Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)
mineral
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
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Banded Gneiss
Gneiss
metamorphic
Granite Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Amygdaloidal Basalt
Vesicular Basalt with secondary mineral infilling (commonly Zeolites, Calcite, or Quartz)
igneous
Quartz with inclusions (likely Chlorite or Hornblende) and country rock
SiO2 (Quartz) with associated ferromagnesian minerals
Mineral/Igneous/Metamorphic association
Granite
Granite (Felsic Plutonic Rock)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Granite
Granite (compositionally: Quartz, Feldspar, Mica)
igneous
Biotite Mica in Host Rock
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
metamorphic
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Druze on Matrix (Geode Fragment)
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
metamorphic
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
igneous
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
metamorphic
Black Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Basalt with Scoria/Vesicular Texture
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
igneous
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
sedimentary
Fossiliferous Sandstone (with Brachiopod or Bivalve mold)
Clastic Sedimentary Rock with Macrofossil Mold
sedimentary
Basalt with vesicles (Amygdaloidal Basalt)
Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)
igneous
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 based)
sedimentary
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 dominated)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
sedimentary
Manganese-coated Sandstone
Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)
sedimentary