Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Category
Not A Rock Or Mineral (Anthropogenic Material)
Browse not a rock or mineral (anthropogenic material) specimens identified by the Rock Identifier community.
Sandstone (Yellow/Tan Sandstone)
Arenite (primarily Quartz, SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide matrix
sedimentary
Sandstone (Water-worn Pebble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Blue Quartz with Dumortierite/Magnesio-riebeckite inclusions
Quartz (SiO2) containing Dumortierite (Al7(BO3)(SiO4)3O3)
igneous/metamorphic
Chrysocolla
Hydrated copper silicates (Cu, Al)2H2Si2O5(OH)4·nH2O
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock (Gneiss/Schist)
Silicon Dioxide (SiO2) within a metamorphic matrix
metamorphic
Red Sandstone
Arenite (with Iron Oxide cement)
sedimentary
Sandstone with Iron Oxide (Limonite/Hematite)
Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)
sedimentary
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Garnet
Almandine formula: Fe3Al2(SiO4)3
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone (likely Iron-rich or Arkosic)
Arenite (SiO2 with FeO(OH) or Fe2O3 staining)
sedimentary
![Lapis Lazuli (A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).) — Mineral](https://media.rockidentification.com/760dd0e4-f05b-4f64-aeb8-2b011a61a1b4-thumbnail.jpg)
Lapis Lazuli
A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).
Mineral
Liesegang Banded Sandstone (Wonderstone)
Ferruginous Sandstone with Liesegang Rings
sedimentary
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
Mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Turquoise in Matrix
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
metamorphic
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
mineral
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
sedimentary
Amber
Succinite
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Aquamarine
Beryl (Be₃Al₂Si₆O‑₁•H₂O)
Mineral
Sandstone
Arenite
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Amygdaloidal Basalt
Basalt with secondary amygdule minerals (likely Epidote or Chlorite)
igneous
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Amethyst (Geode/Druzy)
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Aventurine
Silicon dioxide (SiO2) with fuchsite inclusions
mineral
Basalt (with possible mineral veining)
Basalt (Aphanitic Mafic Igneous Rock)
Igneous
Amethyst (Chevron or Banded variety)
Silicon Dioxide with Iron impurities (SiO2)
mineral