Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Category
Browse organic (sedimentary associated) specimens identified by the Rock Identifier community.
Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Limestone and Quartz Gravel with Petrified Wood
Sedimentary gravel aggregate and fossilized wood
Pyritic Shale
Carbonaceous Shale with Iron Pyrite (FeS2)
Banded Chert / Jasper
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Chert / Chalcedony
Microcrystalline Quartz (SiO2)
Jasper
Silicon dioxide (SiO2)
Chert (Basanite)
Chert (Microcrystalline SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Flint Nodules)
Silicon Dioxide (SiO2)
Dragon Blood Jasper
Epidote with Red Piedmontite (Chalcedony/Quartz variant)
Banded Chert
Silicon Dioxide (SiO2) with impurities
Chert (Red Jasper variant)
Microcrystalline Quartz (SiO2)
Tumbled Jasper and Tiger's Eye
Silicon Dioxide (SiO2) with iron oxide inclusions
Petrified Wood
Silicified wood (SiO2)
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
Green Jasper
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Chalcopyrite
CuFeS2
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Brown Chert
Microcrystalline Quartz (SiO2)
Jasper
Silicon dioxide (SiO2)
Ironstone Concretion / Limonite Node
Goethite and Limonite (FeO(OH) nH2O)
Petrified Wood
Silicified wood / Permineralized wood (SiO2)
Chert (often called Flint when in chalk or limestone)
Silicon Dioxide (SiO₂)
Banded Chert
Microcrystalline Quartz (SiO2)
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
Chert (Flint)
Silicon Dioxide (SiO2)
Banded Chert
Silicon Dioxide (SiO2)
Shungite
Fullerene-bearing carbonaceous rock
Pink Opal
Hydrated Silica (SiO2·nH2O)
Pink Opal
Hydrated silica (SiO2 "n H2O)
Anthracite Coal
Anthracite
Banded Chert (Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (Pebble)
Microcrystalline to Cryptocrystalline Quartz (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Amber
Succiniferous fossil resin (C10H16O)
Jasper
Silicon dioxide (SiO2)
Chert (River Stone)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)