Amber
Succinates (Fossilized Tree Resin)
Category
Browse mineral (organic) specimens identified by the Rock Identifier community.
Amber
Succinates (Fossilized Tree Resin)
Shungite
Non-crystalline carbon (C)
Jasper Agate
Silicon dioxide (SiO2)
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
Dendritic Agate
Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)
Amber
Succinite (Fossilized Resin)
Dendritic jasper/chalcedony
Silica-rich microcrystalline quartz (SiO₂) with manganese-oxide dendrites
Amber
Succinate (Succinite for Baltic varieties)
Amber
Succinite / Fossilized Resin (C10H16O)
Amber
Succinite (approximate formula C10H16O)
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Amber
Succinite
Shark Tooth Fossil
Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)
Fossil Shark Tooth
Lamniformes (order) - likely Cretalamna or Carcharias species
Chert (Flint)
Silicon dioxide (SiO2)
Fossil Shark Tooth
Chondrichthyes (class)
Shale fragment
Shale (Laminated Mudstone)
Banded Chert
Microcrystalline Quartz (SiO2)
Amber (Copal)
Succinite (fossilized resin)
Shale
Laminated Fissile Pelite
Mother of Pearl (Nacre)
Aragonite (layered with organic polymers), CaCO3
Pearl
Organic gemstone (Calcium carbonate - CaCO3)
Purple Agate (Dyed Chalcedony)
SiO2 (Silicon Dioxide) with organic dyes
Amber (Rough Baltics/Beach Specimen)
Succinicum (Organic Gemstone - Fossilized Resin)
Sandstone with Quartz Crystal Infill
Quartz-cemented quartz arenite
Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
Mammoth Molar Fossil
Mammuthus primigenius (Tooth fragment)
Petrified Wood
Silicified Wood (SiO2)
Jasper / Agate with Petrified Wood Inclusion
SiO2
Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Pyrite Geode
Iron Disulfide (FeS2)
Sandstone Concretion
Limonitic Sandstone Concretion
Weathered River Rock (likely Chert or Basalt with algae)
Silicon dioxide (SiO2) with organic biofilm
Amber
Succinite (fossilized tree resin)
Baroque Pearl
Biogenic Calcium Carbonate (Aragonite/Conchiolin)
Dendritic Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Chert
Microcrystalline Quartz (SiO2)
Mookaite Jasper
Silicified Radiolarite (SiO2 with iron impurities)
Petrified Wood
Silicified Wood (SiO2)
Amber
Fossilized Tree Resin (Organic Polymer)