Rock Identifier

Category

Mineral (Processed Alloy)

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

Aura Quartz (Anomalously Coated Quartz) (Silicon Dioxide (SiO2) treated with vaporized metals) — mineral

Aura Quartz (Anomalously Coated Quartz)

Silicon Dioxide (SiO2) treated with vaporized metals

Dalmatian Stone (Dalmatian Jasper / Aplite) — igneous

Dalmatian Stone

Dalmatian Jasper / Aplite

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

Snowflake Obsidian

Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)

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

Tiger's Eye (Nodule/Tumbled)

Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)

Gastropod Fossil (Snail Stone or Steinkern) (Class Gastropoda (Calcium Carbonate - CaCO3 / Silica - SiO2 replacing original shell)) — sedimentary

Gastropod Fossil (Snail Stone or Steinkern)

Class Gastropoda (Calcium Carbonate - CaCO3 / Silica - SiO2 replacing original shell)

Porphyritic Igneous Rock / Granite or Rhyolite Porphyry (Porphyritic intrusive/extrusive igneous rock) — igneous

Porphyritic Igneous Rock / Granite or Rhyolite Porphyry

Porphyritic intrusive/extrusive igneous rock

Jasper (specifically Polychrome or Desert Jasper) (Silicon Dioxide with impurities (SiO2)) — Mineral

Jasper (specifically Polychrome or Desert Jasper)

Silicon Dioxide with impurities (SiO2)

Greenstone (Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote) — metamorphic

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Amygdaloidal Basalt (Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Blue Slag Glass (Ferro-silicate glass (Slag)) — igneous (man-made/industrial)

Blue Slag Glass

Ferro-silicate glass (Slag)

igneous (man-made/industrial)

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

Flint / Chert

Silicon Dioxide (SiO2)

Titanium Coated Quartz (Aura Quartz) (Silicon dioxide with titanium vapor deposition (SiO2)) — mineral

Titanium Coated Quartz (Aura Quartz)

Silicon dioxide with titanium vapor deposition (SiO2)

Aventurine (Quartz (SiO2) with fuchsite inclusions) — mineral

Aventurine

Quartz (SiO2) with fuchsite inclusions

Tiger's Eye (Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2) — mineral

Tiger's Eye

Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2

Quartz Pebble (Geode Nodules / Stream-Rounded Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Geode Nodules / Stream-Rounded Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz (Tumbled/Water-worn Quartz) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (Tumbled/Water-worn Quartz)

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl) (NaFe2+3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline (Schorl)

NaFe2+3Al6(BO3)3Si6O18(OH)4

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Mica Sand / Vermiculite (Phyllosilicate group (typically Biotite or Muscovite)) — mineral

Mica Sand / Vermiculite

Phyllosilicate group (typically Biotite or Muscovite)

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

Black Tourmaline (Schorl)

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

Aura Quartz (Silicon Dioxide (SiO2) with metallic vapor coating) — mineral

Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

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

Black Tourmaline (Schorl)

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

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Bloodstone (Heliotrope (Chalcedony with inclusions of Hematite) - SiO2) — mineral

Bloodstone

Heliotrope (Chalcedony with inclusions of Hematite) - SiO2

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Dyed Magnesite (Howlite imitation) (Magnesium carbonate (MgCO3) with dye) — mineral

Dyed Magnesite (Howlite imitation)

Magnesium carbonate (MgCO3) with dye

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Larimar (Pectolite) (NaCa2Si3O8(OH)) — mineral

Larimar (Pectolite)

NaCa2Si3O8(OH)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine (SiO2 (Silicon Dioxide)) — mineral

Citrine

SiO2 (Silicon Dioxide)

Orange Calcite (with White Calcite/Quartz matrix) (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite (with White Calcite/Quartz matrix)

Calcium Carbonate (CaCO3)

Aura Quartz (Titanium or Angel Aura coated) (Silicon Dioxide (SiO2) with metallic vapor coating) — mineral

Aura Quartz (Titanium or Angel Aura coated)

Silicon Dioxide (SiO2) with metallic vapor coating

Caribbean Calcite (Calcium Carbonate with Argonite (CaCO3)) — mineral

Caribbean Calcite

Calcium Carbonate with Argonite (CaCO3)

Onyx (Black Onyx) (Onyx (Silicon Dioxide, SiO2)) — mineral

Onyx (Black Onyx)

Onyx (Silicon Dioxide, SiO2)

Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles (Mixed gemstones (primarily Silicon Dioxide - SiO2)) — mineral

Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles

Mixed gemstones (primarily Silicon Dioxide - SiO2)

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

Black Tourmaline

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)