Hematite
Iron(III) oxide (Fe2O3)
mineral
Category
Anthropogenic (Man Made Industrial Deposit)
Browse anthropogenic (man made industrial deposit) specimens identified by the Rock Identifier community.
Emerald In Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Conglomerate with Fossilized Shark Teeth
Clastic sedimentary rock (Conglomerate) containing Elasmobranchii remains
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Limestone (specifically Travertine or Tufa)
Calcium Carbonate (CaCO3)
sedimentary
Aquamarine with Quartz
Beryl (Be3Al2Si6O18) with Quartz (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Vesicular Basalt (commonly mistaken for Slag)
Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)
igneous
Sandstone
Arenite
sedimentary
Ruby
Corundum (Al2O3 with Chromium trace impurities)
mineral
Sandstone (likely Graywacke or Arkosic varieties)
Arenite (composed primarily of SiO2)
sedimentary
Milky Quartz Pebble (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Granite
Course-grained intrusive igneous rock
igneous
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Chert (variations include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
![Lapis Lazuli (Lapis Lazuli (a rock type, not a single mineral; main component is Lazurite (Na,Ca)8[(S,Cl,SO4,OH)2|(Al6Si6O24)])) — Metamorphic Rock (primarily composed of minerals)](https://media.rockidentification.com/b697ae67-2efa-42bf-8d6c-70c23f91ec13-thumbnail.jpg)
Lapis Lazuli
Lapis Lazuli (a rock type, not a single mineral; main component is Lazurite (Na,Ca)8[(S,Cl,SO4,OH)2|(Al6Si6O24)])
Metamorphic Rock (primarily composed of minerals)
Sandstone Chert/Quartzite
Silicon Dioxide (SiO2) - Sedimentary Sandstone / Orthoquartzite
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Carnelian (a variety of Chalcedony)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
mineral
Native Copper
Native Copper (Cu)
mineral
Ferruginous Sandstone
Sandstone, Iron-rich
sedimentary
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
sedimentary
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Chert / Flint
Chert (varieties include Flint)
Sedimentary
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)
Mineral
Sandstone
Arenite (primarily SiO2 with trace Fe2O3)
sedimentary
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Carnelian Agate
Silicon Dioxide (SiO₂), a variety of Chalcedony
mineral
Limonite and Goethite (Ironstone)
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
sedimentary
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2, with varying amounts of Calcite, Pyrite, and Sodalite).
Mineral
Bloodstone Jasper (Heliotrope)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
sedimentary
Hematite
Hematite (Fe2O3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Sandstone
Arenite (SiO2 based with various mineral cements)
sedimentary
Zoisite with Ruby (Anyolite)
Anyolite (Ca2Al3(SiO4)3(OH) + (Hb, Al, Cr)2O3)
metamorphic