Rock Identifier

Category

Organic (Non Geological)

Browse organic (non geological) specimens identified by the Rock Identifier community.

Chert (Iron-stained) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / Flint (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Amber (Succinite (Fossilized Tree Resin)) — gemstone

Amber

Succinite (Fossilized Tree Resin)

Lignite (Brown Coal) (Humic Lignite (Carbonaceous sedimentary rock)) — sedimentary

Lignite (Brown Coal)

Humic Lignite (Carbonaceous sedimentary rock)

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

Sandstone (Weathered Coastal Boulder)

Arenite (composed primarily of SiO2)

Black glassy volcanic rock, likely scoria or obsidian (Vesicular basaltic scoria (probable); possibly dark obsidian) — igneous

Black glassy volcanic rock, likely scoria or obsidian

Vesicular basaltic scoria (probable); possibly dark obsidian

Coal (Bituminous) (Organic sedimentary rock primarily consisting of carbon (C)) — sedimentary

Coal (Bituminous)

Organic sedimentary rock primarily consisting of carbon (C)

Biological Specimen (Domestic Dog) (Canis lupus familiaris) — Organic (Non-rock)

Biological Specimen (Domestic Dog)

Canis lupus familiaris

Organic (Non-rock)

Fossiliferous Sandstone / Fossil Fragment (Fossiliferous Sedimentary Matrix with Indeterminate Fossil Material) — fossil

Fossiliferous Sandstone / Fossil Fragment

Fossiliferous Sedimentary Matrix with Indeterminate Fossil Material

Shale with Plant Fossils / Carbonaceous Shale (Laminated Mudrock (Siliciclastic)) — sedimentary

Shale with Plant Fossils / Carbonaceous Shale

Laminated Mudrock (Siliciclastic)

Shale or Siltstone (Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)) — sedimentary

Shale or Siltstone

Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)

Tumbled fossiliferous limestone (Micritic limestone, likely bioclastic/fossiliferous carbonate rock (predominantly CaCO₃)) — sedimentary

Tumbled fossiliferous limestone

Micritic limestone, likely bioclastic/fossiliferous carbonate rock (predominantly CaCO₃)

Pink Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — mineraloid

Pink Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Baltic Amber (Black) (Succinite (Fossilized Tree Resin)) — fossil

Baltic Amber (Black)

Succinite (Fossilized Tree Resin)

Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere) (Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)) — gemstone

Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere)

Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)

Beaded bracelet with likely quartz or glass beads (Uncertain; the pale beads may be quartz (SiO₂), but the image does not show diagnostic features) — mineral

Beaded bracelet with likely quartz or glass beads

Uncertain; the pale beads may be quartz (SiO₂), but the image does not show diagnostic features

Limestone ( weathered ) / Chert Nodular Rock (Sedimentary rock (primarily Calcium Carbonate, CaCO3, with Microcrystalline Quartz, SiO2)) — sedimentary

Limestone ( weathered ) / Chert Nodular Rock

Sedimentary rock (primarily Calcium Carbonate, CaCO3, with Microcrystalline Quartz, SiO2)

Shale (Shale (Fine-grained clastic sedimentary rock)) — sedimentary

Shale

Shale (Fine-grained clastic sedimentary rock)

Gold nugget or gold-bearing fragment (Native gold (Au), possibly gold-colored metal or coated material) — mineral

Gold nugget or gold-bearing fragment

Native gold (Au), possibly gold-colored metal or coated material

Man-made Ceramic / Clay Figurine (Aluminosilicate Ceramic (Processed Clay)) — Synthetic (not a rock or mineral)

Man-made Ceramic / Clay Figurine

Aluminosilicate Ceramic (Processed Clay)

Synthetic (not a rock or mineral)

Amber (Dark/Black Variety) (Succinite (Resinite), C10H16O) — mineral

Amber (Dark/Black Variety)

Succinite (Resinite), C10H16O

Amber (Fossilized Tree Resin (C10H16O)) — gemstone

Amber

Fossilized Tree Resin (C10H16O)

Chert (variously identified as Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variously identified as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Amber (Fossilized Tree Resin) — gemstone

Amber

Fossilized Tree Resin

Pink Opal (Hydrated silicon dioxide (SiO2·nH2O) with inclusions) — mineral

Pink Opal

Hydrated silicon dioxide (SiO2·nH2O) with inclusions

Abbey Bominable (Monster High character) (Anthropomorphic Yeti / Digital Animation) — not a rock (animated character)

Abbey Bominable (Monster High character)

Anthropomorphic Yeti / Digital Animation

not a rock (animated character)

Anthracite Coal (Anthracite (Carbon-rich metamorphic coal)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Amber (Succinite (specifically for Baltic amber); Approximate formula: C10H16O) — Organic Gemstone (Mineraloid)

Amber

Succinite (specifically for Baltic amber); Approximate formula: C10H16O

Organic Gemstone (Mineraloid)

Tiny amber-colored crystal or mineral fragment (Indeterminate from image; possibly quartz, citrine, topaz, or iron-stained feldspar) — mineral

Tiny amber-colored crystal or mineral fragment

Indeterminate from image; possibly quartz, citrine, topaz, or iron-stained feldspar

Chert (Flint variety) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline Silica (SiO2)

Black beaded bracelet, likely black onyx or glass (Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made glass) — mineral

Black beaded bracelet, likely black onyx or glass

Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made glass

Desert Rose / Ironstone Concretion (Hematite-cemented quartz concretion) — sedimentary

Desert Rose / Ironstone Concretion

Hematite-cemented quartz concretion

Anthracite Coal (Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)) — metamorphic

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)

Possible blue sapphire (Corundum (Al₂O₃), possibly blue sapphire) — gemstone

Possible blue sapphire

Corundum (Al₂O₃), possibly blue sapphire

Flint/chert nodule with a weathered cortex (Microcrystalline quartz (SiO₂), likely flint or dark chert) — sedimentary

Flint/chert nodule with a weathered cortex

Microcrystalline quartz (SiO₂), likely flint or dark chert

Amber (Succinite (a Fossilized Tree Resin); Chemical formula is approximately C10H16O) — Organic mineraloid

Amber

Succinite (a Fossilized Tree Resin); Chemical formula is approximately C10H16O

Organic mineraloid

Weathered flint or chert fragment (Microcrystalline quartz (SiO₂), likely chert/flint) — sedimentary

Weathered flint or chert fragment

Microcrystalline quartz (SiO₂), likely chert/flint

Amber (Fossilized Tree Resin (Generic formula roughly C10H16O)) — mineral

Amber

Fossilized Tree Resin (Generic formula roughly C10H16O)

N/A (Non-Geological Specimen) — N/A

N/A (Non-Geological Specimen)

Chert (often called Flint or Jasper depending on color) (Chert (SiO2 - Microcrystalline or Cryptocrystalline Quartz)) — sedimentary

Chert (often called Flint or Jasper depending on color)

Chert (SiO2 - Microcrystalline or Cryptocrystalline Quartz)

Baltic Amber (Succinite (Polmerized conifer resin)) — mineraloid

Baltic Amber

Succinite (Polmerized conifer resin)

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

Jasper

Silicon dioxide (Microcrystalline Quartz, SiO2)