Chalcedony with Druzy Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (occurring as a rolled clast) specimens identified by the Rock Identifier community.
Chalcedony with Druzy Quartz
Silicon Dioxide (SiO2)
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Aquamarine
Beryl (Be3Al2Si6O18)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Orange Calcite
Calcium Carbonate (CaCO3)
Kidney Stone
Calcium Oxalate (CaC2O4), Uric Acid, or Struvite
Diorite
Intrusive Igneous Diorite
Chrysocolla
Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
Blue Quartzite
Quartzite with inclusions (SiO2)
Ferruginous Quartz (Iron-stained Quartz)
Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)
Chalcopyrite
Chalcopyrite (CuFeS2)
Fluorite (Green Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeO oxides)
Grey Agate
Silicon Dioxide (SiO2) - variety: Agate/Chalcedony
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
Marble
Metamorphosed Limestone (mainly CaCO3)
Sandstone
Arenite (primarily SiO2)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O
Black Star Diopside (beads)
Diopside (CaMgSi2O6) - a member of the pyroxene group
Fossilized Horn Coral
Rugosa
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Green Sandstone
Glauconitic Sandstone
Pink Thulite (in Pumice-like texture)
Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Pink Tumbled Agate
Silicon Dioxide (SiO2) with dye
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
Larimar
Pectolite (NaCa2Si3O8(OH))
Iron-Stained Quartz (Riverside Cobble)
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Talc
Talc (Mg₃Si₄O₁₀(OH)₂)
Granite
Phaneritic intrusive igneous rock
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)