Serpentine
Antigorite, Lizardite, or Chrysotile; Mg3Si2O5(OH)4
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Serpentine
Antigorite, Lizardite, or Chrysotile; Mg3Si2O5(OH)4
Banded Agate (Orca Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
Crinoid Fossil Marble
Crinoidal Limestone / Phylum Echinodermata
Fluorite
Calcium fluoride, CaF2
Riverstone (Quartzite or Siltstone cobble)
Quartzite (primarily SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Quartzite Pebble (with iron staining)
Quartzite (SiO2 with ferric oxide impurities)
Vanadinite
Lead Chlorovanadate, Pb5(VO4)3Cl
Vesicular Basalt
Aphanitic Mafic Igneous Rock (with vesicles)
Gold Nugget
Native Gold (Au)
Turritella Agate
Silicified Elimia tenera Fossil (SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Yellow Chalcedony
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Basalt (River-worn Pebble)
Aphanitic Mafic Igneous Rock
Tumbled Black Jasper
Silicon Dioxide (SiO2) with iron and carbon inclusions
Banded Agate
Cryptocrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)
Dalmatian Stone
Dalmatian Jasper (Aplitic Perthite)
Yellow Calcite
Calcium Carbonate (CaCO3)
Pyrite in Matrix (likely Quartz or Schist matrix)
Iron Sulfide (FeS2)
Carnelian (a variety of Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
Yellow Jasper
Silicon Dioxide (SiO2) - variety of Chalcedony
Fluorite Octahedron
Calcium Fluoride (CaF2)
Citrine
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Common Opal in Host Rock
Hydrated Silica (SiO2·nH2O)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
Orthoclase Feldspar (Sunstone variety)
KAlSi3O8 (Potassium Aluminum Silicate)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Fluorite
Calcium Fluoride (CaF2)
Fluorite in Host Rock
Calcium Fluoride (CaF2)
Green Fluorite
Calcium Fluoride (CaF2)
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with inclusions of Hematite
Charoite
Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Red Jasper
Jasper (SiO2 with Fe2O3 inclusions)
Quartzite
Quartzite (mainly SiO2)