Astrophyllite
Astrophyllite (K2NaFe7Ti2Si8O26(OH)4F)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Astrophyllite
Astrophyllite (K2NaFe7Ti2Si8O26(OH)4F)
Gneiss (Metamorphic Rock)
Gneiss
Amber Agate / Carnelian
Chalcedony (Silicon Dioxide, SiO2)
Dyed Quartz Geode
Dyed crystalline quartz (Silicon Dioxide, SiO2)
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Carnelian (a variety of Chalcedony)
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
Chalcedony (Botryoidal/Agate nodule)
Microcrystalline Quartz (SiO2)
Slag (Industrial By-product)
Glassy silicate or metallic smelting residue
Gold Nugget
Native Gold (Au)
Basalt with Caliche
Extrusive Mafic Igneous Rock with Secondary Carbonate Crust
Quartzite
Quartzite (primarily SiO2)
Gneiss
Gneiss
Serpentine
Serpentine Group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Red Granite
Phaneritic Felsic Igneous Rock (Quartz, Alkali Feldspar, Plagioclase)
Quartzite (with mineral vein)
Metamorphosed Quartz-rich Sandstone (SiO2)
Banded Slate or Siltstone with Quartz/Calcite Veins
Protolith-derived Siltstone or Slate (varies based on degree of metamorphism)
Pink Granite
Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)
Porphyritic Rhyolite (Red)
Rhyolite (Porphyry)
Dendritic Agate / Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Calcite
Calcite (Mineral; CaCO₃)
Yellow Jasper
Chalcedony (SiO2) with Goethite/Iron oxide inclusions
Smoky Quartz
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Jasper
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron inclusions
Quartzite
Quartzite (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions
Quartzite
Quartzite (primarily SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Botryoidal Pyrite
Iron Sulfide (FeS2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Pyrite
Iron Disulfide (FeS2)
Flint (or Chert)
Cryptocrystalline Quartz (SiO2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Granite
Phaneritic Felsic Igneous Rock (Granite)
Unakite
Epidotized Granite
Jasper Agate
Silicon dioxide (SiO2)
Granite
Plutonic Granite
Vanadinite
Lead Chlorovanadate - Pb5(VO4)3Cl
Nephrite Jade
Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)