Rock Identifier

Category

Sedimentary Like (Industrial Composite)

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

Milky or Greenish Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Milky or Greenish Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Unidentifiable Rock Fragment — Uncertain

Unidentifiable Rock Fragment

Uncertain
Ruby (Raw/Rough) (Corundum (Al2O3 with Chromium trace)) — mineral

Ruby (Raw/Rough)

Corundum (Al2O3 with Chromium trace)

mineral
Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)

Mineral
Silicon Carbide (Carborundum) (Silicon Carbide (SiC)) — mineral

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

mineral
Quartzite (Quartzite (Primary mineral: Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: Silicon Dioxide, SiO2)

metamorphic
Gold Ore in Quartz (Auriferous Quartz (Au + SiO2)) — igneous

Gold Ore in Quartz

Auriferous Quartz (Au + SiO2)

igneous
Andesite Porphyry (Geological Drill Core) (Andesite Porphyry) — igneous

Andesite Porphyry (Geological Drill Core)

Andesite Porphyry

igneous
Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

mineral
Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral
Vesicular Basalt (commonly mistaken for Slag) (Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)) — igneous

Vesicular Basalt (commonly mistaken for Slag)

Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)

igneous
Fancy Jasper (Ocean Jasper or River Jasper variant) (Silicon Dioxide with inclusions (SiO2)) — sedimentary

Fancy Jasper (Ocean Jasper or River Jasper variant)

Silicon Dioxide with inclusions (SiO2)

sedimentary
Smoky Quartz (with inclusions) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (with inclusions)

Silicon Dioxide (SiO2)

mineral
Quartzite (River Pebble) (Recrystallized Quartz (SiO2)) — metamorphic

Quartzite (River Pebble)

Recrystallized Quartz (SiO2)

metamorphic
Garnet in Matrix (likely Almandine in Quartz/Mica Schist) (Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock) — metamorphic

Garnet in Matrix (likely Almandine in Quartz/Mica Schist)

Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock

metamorphic
Chert with Druzy Quartz Geode (Microcrystalline Quartz (SiO2)) — sedimentary

Chert with Druzy Quartz Geode

Microcrystalline Quartz (SiO2)

sedimentary
Chert / Flint Nodule (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert / Flint Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

sedimentary
Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

mineral
Graphic Granite (Graphic Granite (a variety of Pegmatite)) — igneous

Graphic Granite

Graphic Granite (a variety of Pegmatite)

igneous
Rough Emerald (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

mineral
Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

mineral
Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral
Banded Agate (specifically Sardonyx or Red Agate) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (specifically Sardonyx or Red Agate)

Silicon Dioxide (SiO2)

mineral
Diamond Druzy (Crystalline Diamond) (Carbon (C)) — mineral

Diamond Druzy (Crystalline Diamond)

Carbon (C)

mineral
Bauxite (Bauxite (Al2O3·2H2O mixed with iron oxides)) — sedimentary

Bauxite

Bauxite (Al2O3·2H2O mixed with iron oxides)

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

Milky Quartz (Beach Pebble)

Quartz (Silicon Dioxide, SiO2)

mineral
Green Calcite (Calcite (CaCO3)) — mineral

Green Calcite

Calcite (CaCO3)

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

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

metamorphic
Pumice (Pumice (Felsic volcanic rock)) — igneous

Pumice

Pumice (Felsic volcanic rock)

igneous
Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

mineral
Schist (Chlorite or Mica-rich) (Chlorite Schist) — metamorphic

Schist (Chlorite or Mica-rich)

Chlorite Schist

metamorphic
Cubic Zirconia (CZ) (Cubic Zirconium Dioxide (ZrO2)) — mineral (synthetic)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

mineral (synthetic)
Ruby (in jewelry) (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby (in jewelry)

Corundum (Al2O3 with Chromium traces)

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

Rough Diamond

Diamond (pure Carbon, C)

mineral
Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

mineral
Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Agate

Cryptocrystalline Quartz (SiO2)

mineral
Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

igneous
Rough Sapphire (Corundum (Al2O3)) — mineral

Rough Sapphire

Corundum (Al2O3)

mineral
Blue Star Sapphire (Corundum (Al2O3)) — mineral

Blue Star Sapphire

Corundum (Al2O3)

mineral
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Quartzite River Pebbles (Quartzite (primarily SiO2)) — Metamorphic

Quartzite River Pebbles

Quartzite (primarily SiO2)

Metamorphic