Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
Category
Browse mixed (sedimentary, igneous, and metamorphic) specimens identified by the Rock Identifier community.
Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
Pink Granite (Crystalline Granite)
Igneous Intrusive Rock (Felsic Plutonic)
Concrete with Exposed Aggregate
Anthropogenic conglomerate (Concrete)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Greywacke (River Pebble)
Greywacke sandstone with quartz veining
Hematite
Hematite (Α-Fe2O3)
Limonite (Ironstone Concretion)
Limonite (Hydrous Ferric Oxides mixed with Goethite)
Black Tourmaline (Schorl)
Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3)(OH)3(OH))
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
River Siltstone / Mudstone Pebble
Siltstone (composed of mixed silicate and carbonate minerals)
Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)
Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))
Granite Cobble
Phaneritic Plutonic Felsic Rock
Citrine
Silicon dioxide (SiO2)
Malachite with Chrysocolla
Copper carbonate hydroxide (Cu2CO3(OH)2) and Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
Engineered Quartz Stone
Agglomerated Quartz (SiO2 + Polymer Resin)
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
Milky Quartz
Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Zoisite with Ruby (Anyolite)
Zoisite – Ca2Al3(SiO4)3(OH) with inclusions of Ruby (Al2O3:Cr)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Red Jasper (in Quartz/Chalcedony)
Silicon Dioxide (SiO2) with iron oxide inclusions
Magnetite
Iron(II,III) oxide (Fe3O4)
Yellow Calcite
Calcium Carbonate (CaCO3)
Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
Mixed Quartz and Jasper Pebbles
Silicon Dioxide (SiO2)
Magnetite
Magnetite (Fe3O4)
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
Quartz (in matrix)
Quartz (SiO₂)
Concrete / Anthropogenic Conglomerate
Man-made composite material (Portland cement, aggregate, and water)
Milky Quartz with inclusions
Silicon Dioxide (SiO2)
Chrysocolla in Matrix
Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O
Milky Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Jasper and Basalt (Mixed Breccia or Chert)
Silicon Dioxide (SiO2) with Ferromagnesian silicates
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz)
Silicon Dioxide (SiO2)
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
Peacock Ore
Bornite (Cu5FeS4)