Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Category
Browse mineral composite specimens identified by the Rock Identifier community.
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Quartz Vein in Sedimentary Rock
Silicon Dioxide (SiO2) with host Chert or Limestone
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Pyrite with Quartz
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
Mica Schist / Granite
Mica Schist (Silicate metamorphic rock)
Sandstone
Quartzose Sandstone (Sedimentary Rock)
Fossilized Shark Tooth
Chondrichthyes (Class)
Fossil Shark Tooth
Carcharodon or Carcharias fossil (Vertebrate Fossil)
Kidney Stone (Urolith / Calcium Oxalate Stone)
Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
Quartz Mineral
Silicon Dioxide (SiO2)
Quartz Mineral
Silicon Dioxide (SiO2)
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
Quartz on Schist
Silicon Dioxide (SiO2) on Foliated Metamorphic Rock
Granite (likely weathered granite or granitic gneiss)
Granite; chiefly quartz (SiO₂), feldspar, and mica
Vesicular Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock)
Spinosaurus fossil (permineralized bone)
Spinosaurus aegyptiacus (Calcium phosphate mineralized with silica/sediment)
Gneiss
Gneiss
Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)
FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)
Granite
Intrusive igneous felsic rock
Fluorite Tower
Fluorite (Calcium Fluoride - CaF2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Limonite (Ironstone)
Limonite (FeO(OH)·nH2O)
Desert Rose (Gypsum Rose / Barite Rose)
Calcium Sulfate Dihydrate (CaSO4·2H2O) or Barium Sulfate (BaSO4) with Sand inclusions
Basalt with Vesicular Amygdule
Extrusive igneous rock (Mafic)
Gravel
Unconsolidated rock fragments / detrital sediment
Granite
Intrusive Igneous Rock (Felsic)
Dalmatian Stone
Dalmatian Jasper (not a true jasper, typically an igneous perthite)
Lapis Lazuli (polished cabochon/sphere)
Na8[Al6Si6O24]Sn with accessory minerals (Pyrite, Calcite)
Red Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Quartz Mineral
Silicon dioxide (SiO2)
Granite
Granite (Felsic Plutonic Rock)
Limonite / Goethite Ironstone
FeO(OH)·nH2O (Hydrous iron oxide)
Quartz Mineral
Silicon Dioxide (SiO2)
Gold Mineral
Native Gold (Au)
Granite with Pyrite or Mica
Phaneritic intrusive igneous rock
Gneiss (Cobble)
Gneiss
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss
Gneiss (Metamorphic rock)
Granitic Gneiss
Gneiss (Metamorphic rock of granitic composition)
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
Hag Stone
Perforated sedimentary rock (typically sandstone or limestone)