Tiger's Eye
SiO2 (Silicon Dioxide)
metamorphic
Category
Mineral And Sedimentary
Browse mineral and sedimentary specimens identified by the Rock Identifier community.
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Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Fossilized Gastropod Shell
Class Gastropoda (Fossil)
sedimentary
Sandstone
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Sandstone (Banded)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Dalmatian Jasper
Peralkaline Quartz Feldspar Porphyry
igneous
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Red Sandstone
Arenite (primarily quartz with iron oxide cement)
sedimentary
Botryoidal Chalcedony Geode
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Quartz Crystal Point
Silicon Dioxide (SiO2)
mineral
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Calcite Rhomb
Calcium Carbonate (CaCO3)
mineral
Dalmation Stone (Dalmation Jasper)
Peralkaline Rock with Feldspar and Arfvedsonite
igneous
Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Sandstone
Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)
Sedimentary
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
sedimentary
Red Sandstone
Sandstone (mainly SiO2 with Iron Oxide cement)
sedimentary
Red Sandstone
Arenite (with Iron Oxide / Hematite), Formula: SiO2 (Quartz) + Fe2O3 (Hematite coating)
sedimentary
Siltstone with Sandstone Bands
Siltstone (composed of Quartz and Clay minerals)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (predominantly SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Picture Jasper
Silicified sedimentary or volcanic rock (primarily SiO2)
sedimentary
White Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz Geode or Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)
mineral
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Opal
Hydrated amorphous silica (SiO2·nH2O)
mineral
Quartz Geode
Silicon Dioxide (SiO2) in a Sedimentary Vug
sedimentary
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Limonite/Goethite Concretion
Hydrated Iron(III) Oxide-hydroxide (FeO(OH)·nH2O)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
sedimentary