Rock Identifier

Category

Man Made Material (Metal)

Browse man made material (metal) specimens identified by the Rock Identifier community.

Chert (Yellow or Brown Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow or Brown Jasper)

Microcrystalline Quartz (SiO2)

White Jade (Nephrite or Jadeite) (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — metamorphic

White Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Chert (specifically Flint or Jasper-Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Jasper-Chert)

Silicon Dioxide (SiO2)

Snowflake Obsidian (Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)) — Igneous

Snowflake Obsidian

Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)

Rough Diamond (Native Carbon (C)) — mineral

Rough Diamond

Native Carbon (C)

Carnelian Agate (Carnelian (Silicon Dioxide - SiO2 with Iron Oxide impurities)) — Mineral

Carnelian Agate

Carnelian (Silicon Dioxide - SiO2 with Iron Oxide impurities)

Nuummite (Nuummite (complex silicate composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)) — metamorphic

Nuummite

Nuummite (complex silicate composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

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

Rhodonite

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

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

Diamond (Green tinted)

Carbon (C) with trace impurities or lattice defects

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Jasper (Jasper (Silicon Dioxide) - SiO2) — sedimentary

Jasper

Jasper (Silicon Dioxide) - SiO2

Petrified Wood (Silicified wood (Quartz, SiO2)) — metamorphic

Petrified Wood

Silicified wood (Quartz, SiO2)

Ferro-Manganese Slag (Vitreous Silicate Slag) — Anthropogenic (Industrial byproduct)

Ferro-Manganese Slag

Vitreous Silicate Slag

Anthropogenic (Industrial byproduct)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

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

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

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

Petrified Wood

Silicified Wood (primarily SiO₂)

Sandstone (Arenite (a specific type of sandstone with less than 15% matrix)) — Sedimentary rock

Sandstone

Arenite (a specific type of sandstone with less than 15% matrix)

Sedimentary rock

Shale (Shale (Consolidated fine-grained clay/silt)) — sedimentary

Shale

Shale (Consolidated fine-grained clay/silt)

Yellow Quartz (Citrine Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartz Pebble)

Silicon Dioxide (SiO2)

Granitoid (Granitic Rock) (Granitoid (Quartzo-feldspathic plutonic rock)) — igneous

Granitoid (Granitic Rock)

Granitoid (Quartzo-feldspathic plutonic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Blue Quartzite (Quartzite (primarily SiO2) with inclusions like Dumortierite or Crocidolite) — metamorphic

Blue Quartzite

Quartzite (primarily SiO2) with inclusions like Dumortierite or Crocidolite

Riverstone Quartzite (Water-worn Siltstone/Quartzite) (Metamorphosed Quartz-rich Arenite (SiO2)) — metamorphic

Riverstone Quartzite (Water-worn Siltstone/Quartzite)

Metamorphosed Quartz-rich Arenite (SiO2)

Sandstone (Ferruginous) (Arenite with Iron oxide staining (SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

Granite (specifically Rapakivi Granite) (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Granite (specifically Rapakivi Granite)

Phaneritic Felsic Igneous Rock (Granite)

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

Chert (Jasper)

Silicon Dioxide (SiO2)

Lapis Lazuli (Lapis lazuli (a rock primarily composed of Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)) — metamorphic

Lapis Lazuli

Lapis lazuli (a rock primarily composed of Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Green Slag Glass (Cullet) (Amorphous Silica (Industrial Glass Byproduct)) — Synthetic/Byproduct (Non-igneous, non-sedimentary, non-metamorphic)

Green Slag Glass (Cullet)

Amorphous Silica (Industrial Glass Byproduct)

Synthetic/Byproduct (Non-igneous, non-sedimentary, non-metamorphic)

Garnet Beads (Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)) — Mineral

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Ferruginous Sandstone (with possible trace fossils) (Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)) — sedimentary

Ferruginous Sandstone (with possible trace fossils)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Chert (Iron-rich or Jasperoid) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-rich or Jasperoid)

Cryptocrystalline Quartz (SiO2)

Sandstone (with Iron Staining) (Arenite (composed primarily of SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Chert (Nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Rough Agate/Chert Nodules (Cryptocrystalline Quartz (SiO2)) — sedimentary

Rough Agate/Chert Nodules

Cryptocrystalline Quartz (SiO2)

Chert (specifically Jasper or Brown Chert node) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Brown Chert node)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)

Sandstone (specifically Red Sandstone) (Arenite (SiO2 with Iron Oxide)) — sedimentary

Sandstone (specifically Red Sandstone)

Arenite (SiO2 with Iron Oxide)

White Marble (Recrystallized Calcite (CaCO3) / Marble) — metamorphic

White Marble

Recrystallized Calcite (CaCO3) / Marble