Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Category
Sedimentary (Biogenic)
Browse sedimentary (biogenic) specimens identified by the Rock Identifier community.
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Red Sandstone
Arenite (primarily SiO2 with Fe2O3)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Red/Brown Variety)
Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)
sedimentary
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Gastropod Shell
Gastropoda (Class)
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Red Jasper Concretion
Cryptocrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Chert Nodule
Microcrystalline Silica (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Fossiliferous Limestone with Brachiopod shell
Calcium carbonate (CaCO3)
sedimentary
Conglomerate
Conglomerate (Rock composed predominantly of rounded clasts > 2mm)
sedimentary
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Halite
Halite (Sodium Chloride, NaCl)
mineral
Fossilized Shark Tooth (Sand Tiger)
Carcharias sp. (Fossilized Tooth)
fossil
Pyrite
Iron Disulfide (FeS2)
mineral
Fossilized Bone
Vertebrate Fossil Fragment (Calcium Phosphate / Hydroxyapatite)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
sedimentary or metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Limonite (Iron Ore)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral
Feldspar-rich Quartzite
Meta-arkose (Quartz-Feldspar Quartzite)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Amber with inclusion
Amber (Fossilized Tree Resin)
mineral
Quartzite Pebble (River Rock)
Quartzite (SiO2)
metamorphic
Fossilized Horn Coral
Rugosa
fossil
Citrine Geode
Citrine (Silicon Dioxide, SiO2)
mineral
Petrified Wood
Silicified Wood (primarily Quartz or Chalcedony, SiO2)
mineral
Greenstone
Greenschist / Meta-basalt
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Limestone with Calcite Veins
Calcium Carbonate (CaCO3) - Sparry Limestone
sedimentary
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone with Bitumen/Chert
Calcite (CaCO3) containing organic hydrocarbons
sedimentary