Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
sedimentary
Category
Sedimentary Or Metamorphic (Low Grade)
Browse sedimentary or metamorphic (low grade) specimens identified by the Rock Identifier community.
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Blue calcite (probable)
Calcite, calcium carbonate (CaCO₃)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Turquoise
Hydrate phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
mineral
Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
not a rock
Bentonite Clay
Montmorillonite (Al,Mg)2Si4O10(OH)2·nH2O
sedimentary
Chalcedony
Silicon Dioxide (SiO2)
sedimentary
River Siltstone Pebble
Siltstone (SiO2, Al2Si2O5(OH)4 mix)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Siltstone
Siltstone (primarily SiO2, Al2O3)
sedimentary
Citrine
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Bauxite
Bauxite (mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
sedimentary
Rough Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Pebble (likely Siltstone or fine-grained Sandstone)
Sedimentary Clastic Rock
sedimentary
Quartzite (specifically Pink or Red Quartzite)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Shale (or Slate / Coal / Jet)
Laminated fine-grained sedimentary rock (predominantly clay minerals)
sedimentary
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Tiger's Eye
Silicon dioxide (SiO2) with fibrous inclusions of crocidolite
Mineral
Tumbled serpentinite (likely antigorite-rich serpentine)
Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with possible magnetite, chromite, or brucite
metamorphic
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Emerald (or possibly Green Glass / Slag)
Beryl (Be3Al2(SiO3)6)
gemstone
Jade (likely Nephrite or Jadeite)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
Metamorphic rock (for Nephrite and some Jadeite); Mineral (for Jadeite)
Bauxite
Bauxite (Al2O3·nH2O)
sedimentary
Ruby in Zoisite
Anyolite (Ruby-Zoisite)
metamorphic
Clear Quartz (faceted) / Diamond Simulant
Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)
gemstone
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Chrysocolla (on host rock)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Copper silicate)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
metamorphic
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Mineral
Botryoidal Quartz Cluster (Druzy Stalactitic Quartz)
Silicon Dioxide (SiO2)
mineral
Schist
Schist (primarily mica-schist)
metamorphic
Siltstone
Siltstone (primarily SiO2, Al2O3)
sedimentary
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
metamorphic
Shale with Siltstone layering
Sedimentary Clastic Rock (Mudstone/Shale)
sedimentary
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Yellow Quartz / Chalcedony Pebble
SiO2 (Silicon Dioxide)
sedimentary