Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Category
Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Quartz (chalcedony variety) or Limestone with Quartz Veins
SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)
Quartzite
Quartzite (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Pink Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
Quartzite
SiO2 (Silicon Dioxide)
Chert (and/or Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Quartzite River Rock
Quartzite (SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Green Quartzite (or Aventurine)
SiO2 (Silicon Dioxide) primarily, with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)
Sandstone with Quartz Vein
Arenite with SiO2 intrusion
Quartzite Pebble
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Fossilized Coral (Petoskey Stone type)
Hexagonaria percarinata (Fossilized Rugose Coral)
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Citrine
Citrine (Silicon Dioxide - SiO2)
Diorite
Diorite (Intermediate intrusive igneous rock)
Orange Calcite
Calcite (CaCO3)
Honey Calcite
Calcium Carbonate (CaCO3)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Gneiss (with Quartz and Mica)
Gneiss
Yellow Quartzite
Quartzite (SiO2)
Quartzite Pebble
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Lapis Lazuli
Lapis lazuli (a rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Shale
Fissile mudstone (primarily clay minerals and silt-sized quartz)
Limonite (Iron Ore/Sandstone mixture)
Limonite (FeO(OH)·nH2O) often mixed with Goethite and sedimentary matrix