Fossiliferous Shale
Laminated Mudrock with plant fossils
sedimentary
Category
Mineral (Organic)
Browse mineral (organic) specimens identified by the Rock Identifier community.
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Honey calcite (orange calcite)
Calcite, calcium carbonate (CaCO₃)
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Amber
Succinite
mineral
Amber with inclusion
Amber (Fossilized Tree Resin)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
River Cobble (Sandstone)
Arenite (primarily SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood / Fossilized Wood
Silicified Wood (Silicon Dioxide - SiO2)
fossil
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Petrified Wood
Silicified wood (primarily SiO2)
fossil
Chert / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Amber
Succinite
Organic Mineral
Aragonite (Star Cluster or Twinned variety)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Amber (Dark/Black Variety)
Succinite (Resinite), C10H16O
mineral
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Ironstone Concretion
Ironstone (Siderite/Goethite/Hematite matrix)
sedimentary
Banded Chert (Ironstone type)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Ironstone Concretion
Goethite-rich Siltstone / Siderite (FeCO3)
sedimentary
Jasper with Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amber
Succinite (fossilized resin); C10H16O
mineraloid
Shark Tooth Fossil
Elasmobranchii dentition (fossilized)
fossil
Sandstone
Sandstone (Quartz-rich Arenite / SiO2)
sedimentary
Amber
Fossilized Tree Resin (Succinite for Baltic varieties)
fossil
Sandstone
Sandstone (principally SiO2/Silicon Dioxide)
sedimentary
Bivalve Fossil (Clam Stone)
Phylum Mollusca, Class Bivalvia
fossil
Vuggy Limestone
Calcium Carbonate (CaCO3) with Quartz/Calcite inclusions
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Shale
Shale (Sedimentary rock composed of mud/clay minerals)
sedimentary
Chert Pebble (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert Nodule
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Chert (Green Fossilized Algae or Jasper)
Silicon Dioxide (SiO2)
sedimentary
Flint (Chert Node)
Silicon Dioxide (SiO2)
sedimentary
Shungite
Shungite (Non-crystalline carbon, C)
mineral
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Graphite
Graphite (Carbon, C)
mineral
Black Jasper (Etched)
Silicon Dioxide (SiO2) with impurities
mineral
Chalcedony (Agatized Coral / Rough Chalcedony Node)
Silicon Dioxide (SiO2)
mineral
Picture Jasper
SiO2
mineral