Sandstone Concretion
Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)
sedimentary
Category
Mineral On Igneous Rock
Browse mineral on igneous rock specimens identified by the Rock Identifier community.
Orca Agate (Blue Chalcedony)
Silicon Dioxide (SiO2)
mineral
Pegmatite
Granitic Pegmatite
igneous
Magnetite
Magnetite (Fe3O4)
Mineral
Sandstone (likely Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Bull Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone (specifically Lithic or Quartz Arenite)
Arenite (composed primarily of SiO2)
sedimentary
Goethite (Iron Ore)
Goethite (FeO(OH))
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Red Sandstone Pebble
Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Conglomerate
Conglomerate rock
sedimentary
Quartz Geode (River Cobble)
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Terrigenous Sedimentary Rock (primarily SiO2)
sedimentary
Banded Gneiss
Gneiss (pronounced 'nice')
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Olivine (likely Peridot variety)
Olivine Mineral Group (specifically Forsterite-Fayalite solid solution series); Chemical formula: (Mg,Fe)2SiO4
Mineral
Jasper (Yellow Jasper)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Blue Quartz (potentially Dumortierite-included)
Silicon Dioxide (SiO2) with inclusions
mineral
Peacock Ore (Bornite/Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2)
mineral
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
sedimentary
Schist (Micaceous Schist)
Schist (comprising Muscovite/Biotite mica, Quartz, and Feldspar)
metamorphic
Aventurine (likely Green Aventurine)
Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)
Mineral/Metamorphic Rock
Septarian Nodule (Dragon Stone)
Septarian concretion (composition: CaCO3 - Calcite, Aragonite, and Siderite/Limestone)
sedimentary
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Quartz vein in Host Rock
Crystalline Silicon Dioxide (SiO2) in Lithic Matrix
metamorphic
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone (Greywacke/Siltstone variant)
Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
sedimentary
Sandstone
Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)
Sedimentary Rock
Gneiss
Gneiss
metamorphic
Sandstone (Fossiliferous)
Arenite / Clastic Sedimentary Rock
sedimentary