Quartz Geode
Silicon Dioxide (SiO2)
Category
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
Quartz Geode
Silicon Dioxide (SiO2)
Agate (Chert/Chalcedony)
Cryptocrystalline Quartz (SiO2)
Quartzite
Quartzite (mostly SiO2)
Limonite (with Pyrite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2) with Hematite/Limonite coatings
Basalt with Calcite Veins
Basalt (Mafic Volcanic Rock)
Quartz Geode Fragment with Iron Staining
Silicon Dioxide (SiO2)
Chert (Banded)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Quartz with Sericite and Cinnabar
Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)
Banded Agate (Lake Superior Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
Amygdaloidal Basalt with Quartz/Calcite Inclusions
Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)
Chert (Nodule)
Silicon Dioxide (SiO2)
Massive Quartz with Host Rock
Silicon Dioxide (SiO2)
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
River Stone (Chalcedony/Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Flint nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Vuggy or Fossilliferous)
Microcrystalline Quartz (SiO2)
Chert (Chert breccia)
SiO2 (Silicon Dioxide)
Chert (Brown Variety)
Silicon dioxide (SiO2)
Chert (Iron-stained)
Chert (SiO2 - Silicon Dioxide)
Chert (White Flint)
Silicon Dioxide (SiO2)
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
Quartzite
Metamorphic Quartzite
Serpentine
(Mg,Fe)3Si2O5(OH)4
Quartzite pebble
Quartzite (SiO2)
Quartzite
Metamorphic Quartzite
Quartzite Pebble
Metamorphic Quartzite
Quartzite
Metamorphic Quartzite
Chert (Jasper variety)
Microcrystalline quartz (SiO2)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
Limestone
Calcium Carbonate (CaCO3)
Chert (and Limestone)
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3)
Quartzite with Iron Staining
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)