Rock Identifier

Category

Sedimentary Like (Industrial Composite)

Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.

Diamond (Green tinted) (Carbon (C) with trace impurities or lattice defects) — mineral

Diamond (Green tinted)

Carbon (C) with trace impurities or lattice defects

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Basalt (Mafic volcanic rock (dominated by Plagioclase and Pyroxene)) — igneous

Basalt

Mafic volcanic rock (dominated by Plagioclase and Pyroxene)

Banded Agate (Tumbled) (Agate (Silicon Dioxide, SiO2 - Cryptocrystalline Quartz)) — mineral

Banded Agate (Tumbled)

Agate (Silicon Dioxide, SiO2 - Cryptocrystalline Quartz)

Chert (also known as Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (also known as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Sandstone Pebble (Arenite with Hematite (Fe2O3) cement) — sedimentary

Red Sandstone Pebble

Arenite with Hematite (Fe2O3) cement

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

Petrified Wood

Silicified Wood (SiO2 permineralization)

Chert (Chert / Flint) (Silicon dioxide (SiO2) - Microcrystalline quartz) — sedimentary

Chert (Chert / Flint)

Silicon dioxide (SiO2) - Microcrystalline quartz

Chert (Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2)

Quartz Sand Grain (Silicon Dioxide (SiO2)) — mineral

Quartz Sand Grain

Silicon Dioxide (SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and clay impurities) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay impurities

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite) (Anhydrite (Calcium Sulfate, CaSO4)) — Mineral

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)

Anhydrite (Calcium Sulfate, CaSO4)

Quartz (Milky Quartz vein fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz vein fragment)

Silicon Dioxide (SiO2)

Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead) (Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)) — Mineral for Fluorite; Mineral/Rock for Jadeite (as it's often a rock composed primarily of jadeite mineral)

Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)

Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)

Mineral for Fluorite; Mineral/Rock for Jadeite (as it's often a rock composed primarily of jadeite mineral)

Quartz (Rock Crystal) with minor impurities (Quartz (SiO2)) — Mineral

Quartz (Rock Crystal) with minor impurities

Quartz (SiO2)

Concretion (Sedimentary Concretion (e.g., Siderite or Ironstone)) — sedimentary

Concretion

Sedimentary Concretion (e.g., Siderite or Ironstone)

Rose Quartz (Silicon Dioxide with trace inclusions (SiO2)) — mineral

Rose Quartz

Silicon Dioxide with trace inclusions (SiO2)

Rough Corundum (likely Sapphire/Zircon-bearing) (Aluminium Oxide (Al2O3)) — mineral

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Crazy Lace Agate (Agate (Chalcedony), SiO2) — Mineral

Crazy Lace Agate

Agate (Chalcedony), SiO2

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Ferruginous) (Arenite with Iron Oxide cement (SiO2 + Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (SiO2 + Fe2O3)

Sandstone (Arenite (primarily composed of SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily composed of SiO2 - Silicon Dioxide)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

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

Chert (Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

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

Chert / Flint

Silicon dioxide (SiO2)

Chert (variations include Flint/Chalcedony) (Chert (SiO2 - Silicon Dioxide)) — sedimentary

Chert (variations include Flint/Chalcedony)

Chert (SiO2 - Silicon Dioxide)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Diabase (Greenstone) (Diabase (also known as Dolerite)) — igneous

Diabase (Greenstone)

Diabase (also known as Dolerite)

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

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Milky Quartz Cobble (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Cobble

Silicon Dioxide (SiO2)

Milky Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Sandstone (River Cobble) (Sandstone (primarily composed of silica, SiO2)) — sedimentary

Sandstone (River Cobble)

Sandstone (primarily composed of silica, SiO2)

Sandstone (Red/Brown) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Red/Brown)

Arenite (composed primarily of SiO2)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)