Rock Identifier

Category

Mineral (Processed Alloy)

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

Smoky Quartz with Feldspar (Quartz (SiO2) with Potassium Feldspar (KAlSi3O8)) — mineral

Smoky Quartz with Feldspar

Quartz (SiO2) with Potassium Feldspar (KAlSi3O8)

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

Yellow Quartz (Citrine or Quartzite Pebble)

Silicon Dioxide (SiO2)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Blue Sapphire (Synthetic or Man-made Glass Imitation) (Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic) — mineral

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Mother of Pearl (Nacre) (Nacre (Aragonite/Conchiolin), CaCO3 + Organic Polymers) — mineral

Mother of Pearl (Nacre)

Nacre (Aragonite/Conchiolin), CaCO3 + Organic Polymers

Smoky Quartz Geode Slice (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz Geode Slice

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Orange Calcite (Cleavage Rhomb) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Orange Calcite (Cleavage Rhomb)

Calcite (Calcium Carbonate, CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Celestite (Celestine) (Strontium sulfate (SrSO4)) — mineral

Celestite (Celestine)

Strontium sulfate (SrSO4)

Galena (Lead(II) sulfide (PbS)) — mineral

Galena

Lead(II) sulfide (PbS)

Quartz (Milky/Common Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

Dyed Agate (Silicon Dioxide (SiO2) with synthetic dyes) — mineral

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

Silicon Carbide (Carborundum) (Moissanite (SiC), though mostly synthetic) — mineral

Silicon Carbide (Carborundum)

Moissanite (SiC), though mostly synthetic

Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Cubic Zirconia (in Jewelry) (Zirconium Dioxide (ZrO2)) — mineral

Cubic Zirconia (in Jewelry)

Zirconium Dioxide (ZrO2)

Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

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

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Polychrome Jasper (Silicon Dioxide (SiO2) with iron and other mineral inclusions) — sedimentary

Polychrome Jasper

Silicon Dioxide (SiO2) with iron and other mineral inclusions

Wishing Stone with Quartz Vein (Hydrothermal Quartz Vein in Metasedimentary Matrix (primarily SiO2)) — metamorphic

Wishing Stone with Quartz Vein

Hydrothermal Quartz Vein in Metasedimentary Matrix (primarily SiO2)

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

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

mineral (synthetic)

Yellow Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Red Sandstone (Clastic Sedimentary Mineraloid (predominantly Quartz grains with Iron Oxide cement)) — sedimentary

Red Sandstone

Clastic Sedimentary Mineraloid (predominantly Quartz grains with Iron Oxide cement)

Jasper (likely river-worn) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (likely river-worn)

Silicon Dioxide (SiO2)

Banded Sandstone (Liesegang Rings) (Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)) — sedimentary

Banded Sandstone (Liesegang Rings)

Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Lapis Lazuli (Na8[Al6Si6O24]n(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

Blue Goldstone (Aventurine Glass (Silicon Dioxide with metal inclusions)) — man-made glass mineral simulant

Blue Goldstone

Aventurine Glass (Silicon Dioxide with metal inclusions)

man-made glass mineral simulant

Lapis Lazuli (Lazurite-dominant Metamorphic Rock (complex aluminosilicate)) — metamorphic

Lapis Lazuli

Lazurite-dominant Metamorphic Rock (complex aluminosilicate)

Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald) (Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)) — mineral

Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)

Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Hypersthene ((Mg,Fe)SiO3 - Enstatite-Ferrosilite series) — mineral

Hypersthene

(Mg,Fe)SiO3 - Enstatite-Ferrosilite series

Granite (Granite (Phaneritic Quartz-Feldspar Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Diorite (Polished River Pebble) (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite (Polished River Pebble)

Diorite (Intermediate intrusive igneous rock)

White Topaz (Topaz - Al2SiO4(F,OH)2) — mineral

White Topaz

Topaz - Al2SiO4(F,OH)2

Tree Agate (Silicon Dioxide (SiO2) with dendritic inclusions) — mineral

Tree Agate

Silicon Dioxide (SiO2) with dendritic inclusions

Lepidolite on Matrix (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite on Matrix

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Yellow Aventurine (Quartzite with Muscovite/Sericite inclusions (SiO2)) — metamorphic

Yellow Aventurine

Quartzite with Muscovite/Sericite inclusions (SiO2)

Pebble (likely Quartzite or Chert) (Clastic Sediment, potentially composed of SiO₂ (Quartz)) — Mineral, Sediment

Pebble (likely Quartzite or Chert)

Clastic Sediment, potentially composed of SiO₂ (Quartz)

Mineral, Sediment

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Rhodonite in Matrix (Rhodonite (Manganese Silicate) - (Mn2+,Fe2+,Mg,Ca)SiO3) — mineral

Rhodonite in Matrix

Rhodonite (Manganese Silicate) - (Mn2+,Fe2+,Mg,Ca)SiO3