Rock Identifier

Category

Sedimentary (Processed Mineral Product)

Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.

Sea Glass (Frosted Glass) (Amorphous Silica (SiO2) with various metal oxide impurities) — Man-made material (Anthro-lithic product)

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various metal oxide impurities

Man-made material (Anthro-lithic product)

Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

Blue Apatite (Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)) — mineral

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)

Quartz (River Pebble) (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz (River Pebble)

Quartz (SiO₂ - Silicon Dioxide)

Man-made Crystal (Lead Glass) (Lead oxide-doped Silica Glass (approx. SiO2 + PbO)) — Mineraloid/Synthetic Material

Man-made Crystal (Lead Glass)

Lead oxide-doped Silica Glass (approx. SiO2 + PbO)

Mineraloid/Synthetic Material

Green Moss Agate (Silicon Dioxide with inclusions (SiO2)) — sedimentary

Green Moss Agate

Silicon Dioxide with inclusions (SiO2)

Yellow Aventurine (Yellow Quartzite) (Silicon Dioxide (SiO2) with inclusions) — metamorphic

Yellow Aventurine (Yellow Quartzite)

Silicon Dioxide (SiO2) with inclusions

River Cobble (likely Sandstone or Siltstone type) (Sandstone or Siltstone (common rock types that form river cobbles)) — Sedimentary Rock (specifically a clastic sedimentary rock formed into a cobble)

River Cobble (likely Sandstone or Siltstone type)

Sandstone or Siltstone (common rock types that form river cobbles)

Sedimentary Rock (specifically a clastic sedimentary rock formed into a cobble)

Brown Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Brown Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Epidote in Quartz (Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)) — Mineral

Epidote in Quartz

Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Chert (with small quartz inclusion) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (with small quartz inclusion)

Microcrystalline Silica (SiO2)

Fossilized Turritella Gastropod (Internal Mold) (Turritella (Fossil Gastropod Crust)) — sedimentary

Fossilized Turritella Gastropod (Internal Mold)

Turritella (Fossil Gastropod Crust)

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Red Jasper (nodule) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper (nodule)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Sandstone (River Cobble) (Arenite) — sedimentary

Sandstone (River Cobble)

Arenite

Chalcopyrite in Quartz (Gossan/Iron Hat) (CuFeS2 (Chalcopyrite) with SiO2 (Quartz)) — mineral

Chalcopyrite in Quartz (Gossan/Iron Hat)

CuFeS2 (Chalcopyrite) with SiO2 (Quartz)

Red Jasper (Silica (Silicon Dioxide), Formula: SiO2 with Iron impurities) — sedimentary

Red Jasper

Silica (Silicon Dioxide), Formula: SiO2 with Iron impurities

Red Jasper with Quartz and Hematite (Silicon Dioxide (SiO2) with Ferric Iron inclusions) — sedimentary

Red Jasper with Quartz and Hematite

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Jasper (Green variety) (Silicon Dioxide (SiO₂)) — sedimentary

Jasper (Green variety)

Silicon Dioxide (SiO₂)

Red Jasper (Silicon dioxide (SiO2) with Iron inclusions) — sedimentary

Red Jasper

Silicon dioxide (SiO2) with Iron inclusions

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Slate (Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.) — sedimentary

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides (Goethite)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Grey River Pebble (Likely Quartz-rich or Limestone) (Clastic Sedimentary Rock (typically SiO2 or CaCO3 based)) — sedimentary

Grey River Pebble (Likely Quartz-rich or Limestone)

Clastic Sedimentary Rock (typically SiO2 or CaCO3 based)

Concrete (Hydrated Portland Cement Aggregate Composite) — Anthropogenic Sedimentary (Man-made)

Concrete

Hydrated Portland Cement Aggregate Composite

Anthropogenic Sedimentary (Man-made)

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

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

Ferruginous Quartz (River Pebble) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary (secondary classification for a weathered mineral specimen)

Ferruginous Quartz (River Pebble)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

sedimentary (secondary classification for a weathered mineral specimen)

Bivalve Fossil (Clam) (Class Bivalvia (Calcium Carbonate, CaCO3)) — sedimentary

Bivalve Fossil (Clam)

Class Bivalvia (Calcium Carbonate, CaCO3)

Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Fossil Brachiopod Cast (Atrypa species) (Phylum Brachiopoda, Class Rhynchonellata, Order Atrypida) — sedimentary

Fossil Brachiopod Cast (Atrypa species)

Phylum Brachiopoda, Class Rhynchonellata, Order Atrypida

Red Jasper (Silicon Dioxide (SiO2) - Opaque Chalcedony) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) - Opaque Chalcedony

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Clear Quartz (Rock Crystal) (Quartz (SiO₂)) — Mineral

Clear Quartz (Rock Crystal)

Quartz (SiO₂)

Coral Fossil (Favosites) (Favosites (Extinct genus of tabulate corals)) — sedimentary

Coral Fossil (Favosites)

Favosites (Extinct genus of tabulate corals)

Greenschist (Greenschist facies rock) — Metamorphic

Greenschist

Greenschist facies rock

Fossilized Oyster Shell (Gryphaea or Crassostrea fossil (Calcium Carbonate, CaCO3)) — sedimentary

Fossilized Oyster Shell

Gryphaea or Crassostrea fossil (Calcium Carbonate, CaCO3)