Rock Identifier

Category

Organic (Paper And Cellulose)

Browse organic (paper and cellulose) specimens identified by the Rock Identifier community.

Learn about Organic (Paper And Cellulose) in the encyclopedia

Andesine

Andesite

Andalusite

Andamooka Opal

Andradite Garnet

Andradite Garnet

Andesine-Labradorite

Andesine-Labradorite

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Petrified Wood

Amber

Oil Shale

Petrified wood (Silicified fossil wood, primarily quartz (SiO₂) replacing cellulose) — fossil

Petrified wood

Silicified fossil wood, primarily quartz (SiO₂) replacing cellulose

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Coal (Anthracite or Bituminous) (Carbonaceous sedimentary rock (Carbon)) — sedimentary

Coal (Anthracite or Bituminous)

Carbonaceous sedimentary rock (Carbon)

Amber (Succinite (Formula: C10H16O)) — Mineraloid

Amber

Succinite (Formula: C10H16O)

Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

Limestone with Fossil Inclusions (Sedimentary Carbonate Rock (CaCO3)) — sedimentary

Limestone with Fossil Inclusions

Sedimentary Carbonate Rock (CaCO3)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Graphite Schist (C (Carbonaceous Schist)) — metamorphic

Graphite Schist

C (Carbonaceous Schist)

Graphite (Graphite (Carbon, C)) — metamorphic

Graphite

Graphite (Carbon, C)

Gastly (Trick or Trade Halloween Series) (Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)) — Mineral (Synthetic - Paper and Ink Polymorph)

Gastly (Trick or Trade Halloween Series)

Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)

Mineral (Synthetic - Paper and Ink Polymorph)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Sandstone (Weathered Coastal Boulder) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Weathered Coastal Boulder)

Arenite (composed primarily of SiO2)

Amber (Organic gemstone (Succinite is common if from the Baltic)) — mineral

Amber

Organic gemstone (Succinite is common if from the Baltic)

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Amber (Succinite (specifically for Baltic amber); approximate formula C10H16O) — organic mineraloid

Amber

Succinite (specifically for Baltic amber); approximate formula C10H16O

organic mineraloid

Graphitic schist (probable) (Graphite-bearing mica schist; predominantly carbon (C) with mica, quartz, and possibly sulfides) — metamorphic

Graphitic schist (probable)

Graphite-bearing mica schist; predominantly carbon (C) with mica, quartz, and possibly sulfides

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Pyrite in Matrix (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite in Matrix (Fool's Gold)

Iron Disulfide (FeS2)

Slate (Slate (foliated metamorphic rock, primarily composed of quartz, illite, chlorite, and micas)) — metamorphic

Slate

Slate (foliated metamorphic rock, primarily composed of quartz, illite, chlorite, and micas)

Amber (Succinite (specifically for Baltic amber); C10H16O (Variable organic compound)) — mineral

Amber

Succinite (specifically for Baltic amber); C10H16O (Variable organic compound)

Shungite (Shungite (carbon-rich Precambrian rock)) — mineral

Shungite

Shungite (carbon-rich Precambrian rock)

Graphite (Graphite (Native Carbon, C)) — metamorphic

Graphite

Graphite (Native Carbon, C)

Amber (Succinite (Formula: C10H16O)) — mineral

Amber

Succinite (Formula: C10H16O)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Translucent yellow-orange mineral specimen, possibly amber or citrine (Uncertain; amber is fossilized tree resin (organic), while citrine is quartz, SiO₂) — mineral

Translucent yellow-orange mineral specimen, possibly amber or citrine

Uncertain; amber is fossilized tree resin (organic), while citrine is quartz, SiO₂

Limestone (Calcium carbonate (CaCO3)) — sedimentary

Limestone

Calcium carbonate (CaCO3)

Amber (Succinite (Resinite)) — Organic Crystal (Mineraloid)

Amber

Succinite (Resinite)

Organic Crystal (Mineraloid)

Graphite-rich metamorphic rock (likely graphite schist) (Graphite schist; predominantly graphitic carbon (C) with mica and quartz) — metamorphic

Graphite-rich metamorphic rock (likely graphite schist)

Graphite schist; predominantly graphitic carbon (C) with mica and quartz

Graphite (Graphite (Chemical Formula: C)) — Mineral (Native Element)

Graphite

Graphite (Chemical Formula: C)

Mineral (Native Element)

Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

Limestone (specifically Fossiliferous or Crinoidal Limestone) (Calcium Carbonate (CaCO3) - Calcite Rock) — sedimentary

Limestone (specifically Fossiliferous or Crinoidal Limestone)

Calcium Carbonate (CaCO3) - Calcite Rock

Tumbled amber (Fossilized plant resin; commonly succinite (C10H16O)) — gemstone

Tumbled amber

Fossilized plant resin; commonly succinite (C10H16O)

Petrified Wood (Silicified Wood / Xylopal) — fossil

Petrified Wood

Silicified Wood / Xylopal

Graphite-rich metamorphic rock (probable graphite schist) (Graphite schist; predominantly graphite (C) with quartz and mica) — metamorphic

Graphite-rich metamorphic rock (probable graphite schist)

Graphite schist; predominantly graphite (C) with quartz and mica

Graphite (Graphite (Carbon, C)) — Mineral

Graphite

Graphite (Carbon, C)

White Marble (Recrystallized Carbonate Rock (CaCO3)) — metamorphic

White Marble

Recrystallized Carbonate Rock (CaCO3)

Marble (Recrystallized Limestone (CaCO3)) — metamorphic

Marble

Recrystallized Limestone (CaCO3)

Wallboard/Drywall (Gypsum-based) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — sedimentary

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)