Rock Identifier

Category

Organic Material (Likely A Fruit Or Berry)

Browse organic material (likely a fruit or berry) specimens identified by the Rock Identifier community.

Learn about Organic Material (Likely A Fruit Or Berry) in the encyclopedia

Peat

Orange Obsidian

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Amber

Lizard Skin Jasper

Petrified Wood

Jet

Oil Shale

Limonite

Tangerine Obsidian

Fossiliferous Limestone (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

Chert (Beach Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Beach Pebble)

Silicon Dioxide (SiO2)

Chert (Jasper/Agate mix) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate mix)

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Poppy Jasper (Microcrystalline Quartz (SiO2) with mineral inclusions) — sedimentary

Poppy Jasper

Microcrystalline Quartz (SiO2) with mineral inclusions

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Sandstone (with Moss) (Quartz Arenite / Sandstone) — sedimentary

Sandstone (with Moss)

Quartz Arenite / Sandstone

Tufa Rock and Tumbled Gemstones (Calcareous Tufa (Calcium Carbonate, CaCO3)) — sedimentary

Tufa Rock and Tumbled Gemstones

Calcareous Tufa (Calcium Carbonate, CaCO3)

Jasper (Microcrystalline Quartz (SiO2)) — Sedimentary/Mineral

Jasper

Microcrystalline Quartz (SiO2)

Sedimentary/Mineral

Pyrite Geode (Iron Disulfide (FeS2)) — mineral

Pyrite Geode

Iron Disulfide (FeS2)

Turquoise and Red Coral (Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)) — mineral

Turquoise and Red Coral

Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)

Jasper (Silicon dioxide (Quartz variety), SiO2) — sedimentary

Jasper

Silicon dioxide (Quartz variety), SiO2

Chert (or Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (or Chalcedony)

Microcrystalline Quartz (SiO2)

Chert (Chalcedony/Common Opal) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chalcedony/Common Opal)

Microcrystalline Quartz (SiO2)

Jasper Agate (Silicon dioxide (SiO2)) — mineral

Jasper Agate

Silicon dioxide (SiO2)

Pyrite (Fool's Gold) Cube (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold) Cube

Iron Sulfide (FeS2)

Chert (Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

Sandstone (Sandstone (Quartz-rich Arenite / SiO2)) — sedimentary

Sandstone

Sandstone (Quartz-rich Arenite / SiO2)

Chert (Jasper variation) (Chert (Cryptocrystalline microcrystalline Silicon Dioxide, SiO2)) — sedimentary

Chert (Jasper variation)

Chert (Cryptocrystalline microcrystalline Silicon Dioxide, SiO2)

Fossilized Tooth (Vertebrate Fossilized Tooth (Mineralized Biogenic Material)) — fossil

Fossilized Tooth

Vertebrate Fossilized Tooth (Mineralized Biogenic Material)

Chert (Flint) (Silicon dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon dioxide (SiO2)

Fossiliferous Limestone (Limestone with embedded fossil cross-section) — sedimentary

Fossiliferous Limestone

Limestone with embedded fossil cross-section

Chert (Polished/Tumbled) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Polished/Tumbled)

Silicon Dioxide (SiO2)

Quartzite river stone (Quartzite (SiO2)) — metamorphic

Quartzite river stone

Quartzite (SiO2)

Sandstone Pebble (Arenite (primarily SiO2)) — sedimentary

Sandstone Pebble

Arenite (primarily SiO2)

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Pale blue-gray quartz-rich pebble (tentative) (Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment) — mineral

Pale blue-gray quartz-rich pebble (tentative)

Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment

Drupa Quartz (Sparkly Drusy Quartz on Matrix) (Crystalline Silicon Dioxide (SiO2) on host rock) — mineral

Drupa Quartz (Sparkly Drusy Quartz on Matrix)

Crystalline Silicon Dioxide (SiO2) on host rock

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

Sandstone (Weathered Coastal Boulder)

Arenite (composed primarily of SiO2)

Fossil Shark Tooth (Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna) — fossil

Fossil Shark Tooth

Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna

Chert / River Jasper (Silicon Dioxide (SiO2)) — sedimentary

Chert / River Jasper

Silicon Dioxide (SiO2)

Limestone with Bitumen/Chert (Calcite (CaCO3) containing organic hydrocarbons) — sedimentary

Limestone with Bitumen/Chert

Calcite (CaCO3) containing organic hydrocarbons

Chert (Pebble) (Microcrystalline silica (SiO2)) — sedimentary

Chert (Pebble)

Microcrystalline silica (SiO2)

Chert (Jasper/Flint variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Chert (River Siltstone/Quartzite) (Sedimentary Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (River Siltstone/Quartzite)

Sedimentary Cryptocrystalline Quartz (SiO2)

Chert (Smooth River Pebble) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Smooth River Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Petrified Wood (Fossilized plant material (Silicon dioxide - SiO2)) — fossil

Petrified Wood

Fossilized plant material (Silicon dioxide - SiO2)

Fossilized tooth, likely a mammalian tooth fragment (Indeterminate fossil tooth; possibly an ungulate or carnivoran tooth) — fossil

Fossilized tooth, likely a mammalian tooth fragment

Indeterminate fossil tooth; possibly an ungulate or carnivoran tooth

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Chert (Jasper/Agate variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

Chert (Jasper) (Microcrystalline Quartz (SiO2) with iron oxide impurities) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2) with iron oxide impurities