Sandstone
Sandstone (various mineral compositions)
Sedimentary
Category
Mineral (Biogenic)
Browse mineral (biogenic) specimens identified by the Rock Identifier community.
Schist
Schist (various mineral compositions)
metamorphic
Amygdaloidal Basalt
Basalt with secondary mineral infilling
igneous
Red Jasper
Jasper (Silicate Mineral - SiO2)
sedimentary
Green Calcite
Calcite (CaCO3)
mineral
Granitic Pegmatite
Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)
igneous
Basalt with Caliche Crust
Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating
igneous
Sandstone (likely Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and organic impurities
sedimentary
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Arsenopyrite with Schist Matrix
Arsenopyrite (FeAsS)
mineral
Turquoise (possible Dyed Howlite or Magnesite imitation)
CuAl6(PO4)4(OH)8·4H2O (Turquoise)
mineral
Ferruginous Quartz (Iron-Stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Mineral
![Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral](https://media.rockidentification.com/c8b7a91a-34a9-4307-b134-1cd8d468a8e0-thumbnail.jpg)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
mineral
Azurite with Malachite and Limonite
Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2
mineral
Limonite
Limonite (Hydrous iron oxides, FeO(OH)·nH2O)
mineral
Red Sandstone
Arenite (with Iron Oxide cement)
sedimentary
Sandstone with Iron Oxide (Limonite/Hematite)
Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)
sedimentary
Moonstone
Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8
mineral
Quartz Vein in Host Rock (Gneiss/Schist)
Silicon Dioxide (SiO2) within a metamorphic matrix
metamorphic
Quartz Pebble (with Mica or Iron staining)
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
mineral
Lepidolite with Quartz
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Quartz Vein in Schist
Quartz (SiO2) in Mica Schist
metamorphic
Granite Pebble (Salt and Pepper Granite)
Felsic Intrusive Igneous Rock (Granite)
igneous
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
metamorphic
Basalt with Epidote (Flowerstone-like texture)
Amygdaloidal Basalt (silicate mineral inclusions)
igneous
Conglomerate
Conglomerate
Sedimentary Rock
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Quartz with Arsenopyrite
Silicon Dioxide (SiO2) with Iron Arsenic Sulfide (FeAsS)
mineral
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Sardonyx Agate Sphere
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
mineral
Turquoise (set in silver jewelry)
Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
mineral
Azurite and Malachite on Matrix
Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Sandstone (likely Ferruginous)
Sandstone (SiO2 with iron oxides)
sedimentary
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O
mineral