Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Category
Mineral Within Sedimentary Rock
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
Turquoise in Matrix
Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
mineral
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Jasper (specifically Red or Brecciated Jasper variant)
Jasper (Microcrystalline Quartz - SiO2)
sedimentary
Agate (specifically a Yellow/Honey Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Chert (specifically Gray/Tan Bedded Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Gneiss (with Quartz and Mica)
Gneiss
metamorphic
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Fossiliferous Limestone (with Coralline Inclusions)
Calcium Carbonate (CaCO3)
sedimentary
Jasper (Imperial Jasper style)
Silicon Dioxide (SiO2) with impurities
sedimentary
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Granite (Pink/Red)
Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)
igneous
Amethyst
Amethyst (Silicon Dioxide - SiO2)
mineral
Fire Opal (in matrix)
Hydrated Silica (SiO2·nH2O)
Mineraloid
Sandstone Cobble
Clastic Sedimentary (Sandstone)
sedimentary
Granite Cobble
Phaneritic Felsic Igneous Rock (Granite)
igneous
Labradorite
Labradorite (a calcium-enriched sodic plagioclase feldspar mineral - (Ca, Na)(Al, Si)4O8)
mineral
Turquoise in Matrix
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
mineral
Sandstone Concretion
Sedimentary concretion
Sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
Igneous
Gneiss
Gneiss (a type of metamorphic rock)
Metamorphic Rock
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
Mineral in Metamorphic/Igneous Host
White Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineraloid
Gossan (Iron Hat) with Quartz and Chlorite
Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite
Mineral/Metamorphic Substrate
Sandstone
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Carnelian
Carnelian (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primary)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Granite
Granite (compositionally: Quartz, Feldspar, Mica)
igneous
Concretion or Geode (unbroken)
Varied (depending on mineral composition and cementing agent). For quartz-lined geodes, the scientific name of the dominant mineral would be Quartz (SiO2). For calcite-lined geodes, Calcite (CaCO3). Concretions are often composed of cryptocrystalline quartz (chert), calcite, or iron oxides.
Sedimentary rock (specifically a concretion or possibly a geode)
Jasper Agate (specifically Brecciated Jasper)
Silicon Dioxide (SiO2) with iron oxide and clay impurities
sedimentary
Geode with Quartz and Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Amethyst (Chevron or Banded variety)
Silicon Dioxide with Iron impurities (SiO2)
mineral
Ruby in Zoisite (Anyolite)
Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))
metamorphic
Slate
Slate (foliated metamorphic rock)
metamorphic
Tiffany Stone
Fluorite Opal (a complex mix of Fluorite, Opal, Calcite, Dolomite, Quartz, and Bertrandite)
mineral