Quartzite
Metamorphic Quartzite (SiO2)
Category
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
Quartzite
Metamorphic Quartzite (SiO2)
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
Quartzite
Metamorphic Quartzite (SiO2)
Chert Arrowhead
Chert (Cryptocrystalline variety of Quartz, SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Obsidian
Volcanic Glass (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Quartzite
Metamorphic Quartzite (SiO2)
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Quartzite
Metamorphic Quartzite
Quartz Pebble (Beach Chalcedony)
Silicon Dioxide (SiO2)
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Green Quartzite
Metamorphic Quartz Sandstone (SiO2)
Quartzite
Metamorphic Quartzite (primarily SiO2)
Quartzite
Metamorphic Quartzite (primarily SiO2)
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert / Flint
Silicon Dioxide (SiO2)
Quartzite
Metamorphic Quartz Rock (SiO2)
Chert
Chert (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Asphalt Pavement (with aggregate)
Asphalt concrete
Cardstock (Paper)
Cellulose (C6H10O5)n
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
Chert (Cherty Shale / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Goldstone (Red)
Aventurine Glass
Jasper / Chert (Red)
Cryptocrystalline quartz (SiO2)
Quartzite (River Pebble)
Quartzite (Mainly SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Chert / Flint Variety)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
Green cabochon gemstone, likely aventurine or dyed chalcedony
Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony
Chert
Microcrystalline Quartz (SiO2)
Quartzite
Quartzite (Metamorphosed Sandstone)
Chert
Microcrystalline quartz (SiO2)