Rock Identifier

Category

Mineral (Processed Alloy)

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

Quartz (Milky Quartz/Citrine Type) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz/Citrine Type)

Silicon Dioxide (SiO2)

mineral
Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

mineral
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

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

Blue Calcite

Calcium Carbonate (CaCO3)

mineral
Green Tourmaline (Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)) — mineral

Green Tourmaline

Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)

mineral
Iron-stained Quartz (Silicon Dioxide with Hematite/Limonite impurities (SiO2 + Fe2O3)) — mineral

Iron-stained Quartz

Silicon Dioxide with Hematite/Limonite impurities (SiO2 + Fe2O3)

mineral
Sugilite (Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)) — mineral

Sugilite

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)

mineral
Barite (Barium Sulfate (BaSO4)) — mineral

Barite

Barium Sulfate (BaSO4)

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

Blue Calcite

Calcium Carbonate (CaCO3)

mineral
Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

mineral
Blue Quartz (specifically Dumortierite Quartz) (SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)) — mineral

Blue Quartz (specifically Dumortierite Quartz)

SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)

mineral
Native Gold (in Jewelry form) (Gold (Au)) — Mineral

Native Gold (in Jewelry form)

Gold (Au)

Mineral
Black Tourmaline (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

mineral
Angel Aura Quartz (Treated Clear Quartz) (Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum) — mineral

Angel Aura Quartz (Treated Clear Quartz)

Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum

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

Rhodonite

Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)

mineral
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

mineral
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Citrine (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine

Silicon Dioxide (SiO2) with iron impurities

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

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Titanium Aura Quartz (Titanium bonded Silicon Dioxide (SiO2 + Ti)) — mineral

Titanium Aura Quartz

Titanium bonded Silicon Dioxide (SiO2 + Ti)

mineral
Carnelian Agate (Silicon Dioxide (SiO2) - Chalcedony containing Iron Oxide impurities) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - Chalcedony containing Iron Oxide impurities

mineral
Megalodon Shark Tooth (Otodus megalodon) — fossil

Megalodon Shark Tooth

Otodus megalodon

fossil
Mahogany Obsidian (Volcanic Glass with Hematite inclusions (SiO2)) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite inclusions (SiO2)

igneous
Quartz River Stone (Silicon Dioxide (SiO2)) — sedimentary

Quartz River Stone

Silicon Dioxide (SiO2)

sedimentary
Quartzite River Rock (with Limonite staining) (Quartzite (SiO2)) — metamorphic

Quartzite River Rock (with Limonite staining)

Quartzite (SiO2)

metamorphic
Iron Slag (Ferrous Slag (Silicate/Oxide mixture)) — industrial byproduct (anthropogenic)

Iron Slag

Ferrous Slag (Silicate/Oxide mixture)

industrial byproduct (anthropogenic)
Chert (Quartz Variety) (Microcrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (Quartz Variety)

Microcrystalline Silicon Dioxide (SiO2)

sedimentary
Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

metamorphic
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Fossilized Shark Tooth (Chondrichthyes (Class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

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

Petrified Wood

Silicified Wood (primarily SiO2)

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

Petrified Wood

Silicified Wood (SiO2)

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

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Eclogite (retrograded) (Eclogite (Omphacite-Garnet rock)) — metamorphic

Eclogite (retrograded)

Eclogite (Omphacite-Garnet rock)

metamorphic
Grey River Stone (Quartz-rich Quartzite/Siltstone) (Quartzite / Meta-siltstone (primarily SiO2)) — Metamorphic (low-grade)

Grey River Stone (Quartz-rich Quartzite/Siltstone)

Quartzite / Meta-siltstone (primarily SiO2)

Metamorphic (low-grade)
Banded Gneiss (Gneiss (pronounced 'nice')) — metamorphic

Banded Gneiss

Gneiss (pronounced 'nice')

metamorphic
Note: Item is not a geological specimen (Guitar Components (Steel, Nickel, Plastic, Wood)) — Synthetic/Consumer Product

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Synthetic/Consumer Product
Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral