Quartz
SiO₂ (Silicon Dioxide)
Mineral
Category
Man Made Composite
Browse man made composite specimens identified by the Rock Identifier community.
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Quartz (likely Milky Quartz or Chalcedony)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Sandstone
Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)
Sedimentary Rock
Jasper (yellow/cream variety)
SiO₂ (Cryptocrystalline Quartz)
Sedimentary
Quartzite
Quartzite (primarily SiO2)
Metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Chert (Flint)
Chert (predominantly SiO₂ - silicon dioxide)
sedimentary
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Mineral