Amethyst
Amethyst (Silicon Dioxide - SiO2 with impurities of iron)
mineral
Category
Mineral Within A Sedimentary Rock
Browse mineral within a sedimentary rock specimens identified by the Rock Identifier community.
Chert (specifically Flint or Dark Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Copper Ore with Malachite and Chrysocolla
Cu2CO3(OH)2 (Malachite) with Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
mineral
Chert (often called Flint or Jasper)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Cryptocrystalline Quartz (Silicon Dioxide, SiO2)
sedimentary
Quartz vein in Host Rock
Crystalline Silicon Dioxide (SiO2) in Lithic Matrix
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with iron inclusions
Mineral
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-feldspar, Quartz, and Biotite)
igneous
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
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
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