Picture Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Category
Fossil
Browse fossil specimens identified by the Rock Identifier community.
Ferruginous Siltstone or Mudstone
Ferruginous Siltstone / Goethitic Sandstone
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
metamorphic
Biggs Jasper (Picture Jasper)
Silicon Dioxide (SiO2) - Opaque Silicified Volcanic Ash
sedimentary
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Dendritic Jasper (River Stone)
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
sedimentary
Script Jasper
Cryptocrystalline Quartz (SiO2) with fossiliferous inclusions
sedimentary
Sandstone
Sandstone (principally SiO2)
sedimentary
Limestone
Limestone (Calcium Carbonate - CaCO3)
sedimentary
Amber
Succinite (fossilized tree resin)
mineraloid
Amber
Succinite (fossilized tree resin)
mineraloid / sedimentary organic material
Basalt (with possible dendritic inclusions)
Extrusive mafic igneous rock
igneous
Dragon Stone
Ohko Stone (Argillaceous sedimentary rock)
sedimentary
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
mineral
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite/Hematite and Chert)
sedimentary
Tufa (Vesicular Limestone)
Tufa (form of Calcium Carbonate, CaCO3)
sedimentary
Petrified Wood (Jet or Coalified Wood appearance)
Silicified wood (principally SiO2) or Carbonized Wood
sedimentary
Tree Agate
Silicon Dioxide (SiO2) with Dendritic Inclusions
Mineral
Montana Moss Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Sandstone Concretion
Sandstone (Sedimentary Rock) with silica or calcite cement
sedimentary
Fossilized Pycnodonte Oyster
Pycnodonte (Gryphaeostrea) species; Composition is Calcium Carbonate (Calcite/Aragonite)
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Mookaite Jasper
Mookaite (variety of Chert/Jasper), Silicon Dioxide - SiO2
sedimentary
Mookaite Jasper
Silicon Dioxide (SiO2) - variety of Chert/Jasper
sedimentary
Amber
Succinates (Organic Fossilized Resin)
mineral
Mookaite Jasper
Radiolarite (Silica with iron oxides like Goethite and Hematite)
sedimentary
Amber
Succinite
mineral
Amber
Resinite (Succinite if from the Baltic); Chemical Formula: C10H16O (approximate)
Organic Diamond/Gemstone (often associated with Sedimentary sequences)
Amber
Succinite
Mineraloid
Petoskey Stone
Hexagonaria percarinata
sedimentary
Fossilized Rugose Coral (Horn Coral)
Order Rugosa
sedimentary
Amber
Succinite (Formula: C10H16O)
mineral
Amber
Succinite (with approximate formula C10H16O)
mineraloid
Amber
Succinite
Organic Gemstone (sedimentary associations)
Amber
Succinite (specifically for Baltic amber); approximate formula C10H16O
organic mineraloid
Pearl (in a decorative hair comb setting)
Calcium carbonate (CaCO3) primarily as Aragonite, bonded with Conchiolin
Organic Mineraloid
Script Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Fossiliferous Limestone with Rugose Coral
Rugosa (order), typically preserved in CaCO3 (Calcite)
sedimentary
Mookaite Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Sea Shell (Fighting Conch Fragment)
Calcium Carbonate (CaCO3) - Strombus alatus fragment
sedimentary (biogenic)
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary