Lepidodendron Fossil (Scale Tree)
Lepidodendron sp.
fossil
Category
Sedimentary (Fossilized Organic Matter)
Browse sedimentary (fossilized organic matter) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Fossilized Organic Matter) in the encyclopedia
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Dendritic Quartz
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Fossilized Coral (Petoskey Stone precursor)
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Crinoid Stem Fossil
Class Crinoidea (Phylum Echinodermata), primarily Calcium Carbonate (CaCO3)
sedimentary
Coal
Bituminous Coal / Anthracite
sedimentary
Petoskey Stone
Hexagonaria percarinata
fossil
Burmese Amber (Burmite)
Burmite (C10H16O)
mineraloid
Coal
Anthracite / Bituminous Coal
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Graphite
Carbon (C)
mineral
Graphite
Graphite (Carbon, C)
mineral
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Chert / Flint Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Yellow Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variation)
Silicon Dioxide (SiO2)
sedimentary
Bamboo Leaf Jasper
Silicified Siltstone or Jasper (SiO2)
sedimentary
Chert (Chert Nodule with Chalky Cortex)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Polished amber
Amber (fossilized plant resin), commonly succinite; organic mineraloid rather than a true mineral
gemstone
Kambaba Jasper (Crocodile Jasper)
Stromatolite Fossil (Silicified Stromatolite / Quartz with Microfossils)
fossil
Gastly (Trick or Trade Halloween Series)
Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)
Mineral (Synthetic - Paper and Ink Polymorph)
Fossil crinoid stem segment (columnal)
Crinoidea; commonly preserved as calcite ossicles, often called entrocrinite
fossil
Anthracite Coal
Anthracite C
metamorphic
Likely weathered fossil bone fragment
Indeterminate fossilized bone; taxonomic identification requires microscopy and locality data
fossil
Fossil Coral
Hexagonaria or Rugose Coral (petoskey stone / fossilized rugose or tabulate coral)
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Dendritic Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Montana Moss Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Fossilized Crinoid Stem
Crinoidea (Echinodermata)
fossil
Limestone with Fossil Fragments
Bioclastic Carbonate Rock (CaCO3)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Graphite
Graphite (Carbon, C)
mineral
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Banded Jasper
Silicate Mineral (Microcrystalline Quartz / SiO2)
sedimentary
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Chert (SiO2)
sedimentary
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Shungite
Non-crystalline carbon (allotrope of carbon)
metamorphic
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary