Red Quartzite (River Stone)
Quartzite (primarily SiO2)
Category
Browse sedimentary rock (possibly a conglomerate or coarse grained sandstone) specimens identified by the Rock Identifier community.
Red Quartzite (River Stone)
Quartzite (primarily SiO2)
Pink Quartzite
Quartzite (primarily SiO2)
Diabase (also known as Dolerite)
Diabase / Dolerite
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Quartzite
Quartzite (primarily SiO2)
Amazonite
Amazonite (KAlSi3O8 - a variety of Microcline Feldspar)
Barite
Barium Sulfate (BaSO4)
Bi-Color Tourmaline (or Watermelon Tourmaline)
Tourmaline (complex borosilicate mineral group with general formula AD3G6(BO3)3T6O18(OH,O)4)
Quartz / Quartzite
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2 principal component)
Quartz
Quartz (SiO₂)
Quartzite
Quartzite (primarily SiO2)
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Fossilized Shark Tooth in Matrix
Otodus sp. (likely Otodus obliquus)
Cinnabar in Matrix
Cinnabar (Mercury(II) sulfide, HgS)
Quartzite
Quartzite (primarily SiO2)
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Quartzite (Iron-stained)
Quartzite (primarily SiO2)
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Kunzite
Spodumene, LiAlSi2O6 (variety of spodumene)
Precious Opal
Hydrated Silica (SiO2·nH2O)
Opal (Precious Opal)
Hydrated Silica (SiO2·nH2O)
Quartzite (Yellow/Tan river stone variety)
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Precious Opal
Hydrated Silica (SiO2·nH2O)
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Quartz
Silicon dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Quartzite (Water-worn Pebble)
Metamorphosed Quartz Sandstone (SiO2)
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
Quartzite (Yellow/Orange variety)
Quartzite (composed primarily of Silica, SiO2)
Quartzite Cobble
Meta-quartzite (SiO2)
Schist
Mica Schist
Red Quartzite
Quartzite (SiO2)
Red aventurine
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Black Opal
Hydrated Silica (SiO2·nH2O)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Quartzite
Quartzite (SiO2)