Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Category
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Tektite (Indochinite)
Tektite (High-silica natural glass)
Milky quartz (quartz crystal)
Quartz, silicon dioxide (SiO₂)
Quartz (Milky/Chalcedony variety)
Silicon Dioxide (SiO2)
Sandstone (Siltstone or Fine-grained)
Clastic sedimentary rock (primarily SiO2)
Green Calcite or Prasiolite (Green Quartz)
Calcium carbonate (CaCO3) or Silicon dioxide (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Pyrite and Quartz Agglomerate
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
Milky Quartz with Pyrite and Iron Staining
Silicon Dioxide (SiO2) with Iron Disulfide (FeS2) inclusions
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Quartz (Milky or Smoky Quartz variety)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Tumbled blue stone, likely blue aventurine or dyed quartz
Quartz (SiO₂), possibly with fuchsite inclusions; exact identification requires testing
Mica (Muscovite) in Granite
Muscovite (KAl2(AlSi3O10)(OH)2)
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite inclusions)
Green Aventurine
Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Chalcedony (Common Opal variant or Chert/Flint)
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 containing Fuchsite)
Clear Quartz Cluster
Quartz (Silicon Dioxide, SiO2)
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
White Quartz Pendant
Silicon Dioxide (SiO2)
Quartz pebble
SiO2
Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2)
Sandstone Cobble
Arenite (primarily Quartz Arenite)
Sandstone
Arenite (specifically Iron-stained Quartz Sandstone)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
Snowflake Obsidian
Vitreous Volcanic Glass (Siliceous Obsidian with Cristobalite inclusions)
Quartz
Silicon Dioxide (SiO2)