Fossilized Bone
Permineralized Vertebrate Fossil
sedimentary
Category
Organic Mineraloid And Mineral
Browse organic mineraloid and mineral specimens identified by the Rock Identifier community.
Learn about Organic Mineraloid And Mineral in the encyclopedia
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Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold) in Matrix
Iron Disulfide (FeS2)
mineral
Sandstone
Sandstone (Siliciclastic Sedimentary Rock)
sedimentary
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Sandstone
Arenite
sedimentary
Sandstone
Arenite
sedimentary
Pyrite in Matrix (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Amber
Succinite (approximate formula C10H16O)
mineral
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Mineraloid (synthetic)
Sandstone with Quartz Crystal Infill
Quartz-cemented quartz arenite
sedimentary
Fossil Shark Tooth
Otodus sp. or Carcharocles sp. (likely fossilized Chondrichthyes)
fossil
Quartz-veined Limestone
Sedimentary limestone with quartz/calcite veinlets
sedimentary
Chert with Calcite Veins
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) intrusions
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Chert (Flint)
Silicon dioxide (SiO2)
sedimentary
Sand Tiger Shark Tooth
Carcharias taurus
fossil
Fossil Shark Tooth
Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth
sedimentary
Fossil Shell
Brachiopod or Mollusk fossil
fossil
Grass (Organic Matter/Soil)
Poaceae (family of monocotyledonous flowering plants)
Organic Materia (Not a rock or mineral)
Fossilized Shark Tooth
Carcharocles or Otodus sp. (Micro-fossilized)
sedimentary
Banded gneiss
Gneiss, chiefly quartz–feldspar–mica (variable composition)
metamorphic
Tufa Rock and Tumbled Gemstones
Calcareous Tufa (Calcium Carbonate, CaCO3)
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
mineral
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2 with chlorite inclusions)
mineral
Moss Agate
Silicon Dioxide (SiO2) with Chlorite/Oxide inclusions
mineral
Tumbled amber
Amber (fossilized plant resin; commonly succinite, C10H16O)
gemstone
Amber
Succinite (Fossilized Tree Resin)
gemstone
Chalcedony / Agate with Botryoidal Quartz
Silicon Dioxide (SiO2)
sedimentary
Amber
Succinite
mineral
Fossilized Shell
Invertebrate fossil (Bivalvia or Brachiopoda)
fossil
Amber
Succinite (Fossilized Tree Resin, C10H16O)
mineral
Amber
Organic gemstone (Succinite is common if from the Baltic)
mineral
Moss Agate
Chalcedony (Silicon Dioxide / SiO2)
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2)
mineral
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Green Moss Agate / Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron and Manganese inclusions
sedimentary
Amber
Succinite (specifically for Baltic amber); chemical formula approx. C10H16O
Organic Gemstone (fossilized resin)
Mookaite Jasper
Silicified Radiolarite (SiO2 with iron impurities)
sedimentary
White Quartz
Silicon Dioxide (SiO2)
mineral