Rock Identifier

Category

Mineral (Metal)

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

Sandstone (with Iron Staining) (Clastic sedimentary rock (SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 oxides)

Turquoise (Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Pyrite on Quartz (Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)) — mineral

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Limonite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

Red Sandstone Pebble (Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)) — sedimentary

Red Sandstone Pebble

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Azurite-Malachite (often called Azerite Malachite or Azurmalachite) (Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)) — Mineral

Azurite-Malachite (often called Azerite Malachite or Azurmalachite)

Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)

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

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Septarian Nodule (Septarian Concretion (CaCO3 with Siderite/Limonite streaks)) — sedimentary

Septarian Nodule

Septarian Concretion (CaCO3 with Siderite/Limonite streaks)

Botryoidal Chalcedony (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony

Silicon Dioxide (SiO2)

Septarian Nodule (Septarian Concretion) — sedimentary

Septarian Nodule

Septarian Concretion

Chrysocolla in Matrix (Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla in Matrix

Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O

Amygdaloidal Basalt with Quartz/Calcite Inclusions (Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)) — igneous

Amygdaloidal Basalt with Quartz/Calcite Inclusions

Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Amazonite (likely mixed with other feldspars/minerals) (Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.) — Mineral

Amazonite (likely mixed with other feldspars/minerals)

Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.

Chakra Stone Tower (Composite Multi-Mineral) (Crystalline Silicon Dioxide composite (SiO2) with various inclusions) — mineral

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Vesicular Basalt (Amygdaloidal) (Amygdaloidal Basalt) — igneous

Vesicular Basalt (Amygdaloidal)

Amygdaloidal Basalt

Fluorite (Purple variety) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Purple variety)

Calcium Fluoride (CaF2)

Shale or Siltstone (Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)) — sedimentary

Shale or Siltstone

Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)

Pyrite and Fluorite on Quartz (Matrix Specimen) (Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)) — mineral

Pyrite and Fluorite on Quartz (Matrix Specimen)

Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

Malachite and Azurite on Matrix (Cu2CO3(OH)2 (Malachite) / Cu3(CO3)2(OH)2 (Azurite)) — mineral

Malachite and Azurite on Matrix

Cu2CO3(OH)2 (Malachite) / Cu3(CO3)2(OH)2 (Azurite)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Rutilated Quartz (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Amethyst (Amethyst (Silicon Dioxide with iron impurities), SiO2) — mineral

Amethyst

Amethyst (Silicon Dioxide with iron impurities), SiO2

Amazonite (Potassium aluminum silicate (KAlSi3O8)) — mineral

Amazonite

Potassium aluminum silicate (KAlSi3O8)

Tanzanite (Rough) (Blue Zoisite (Ca2Al3(SiO4)3(OH))) — mineral

Tanzanite (Rough)

Blue Zoisite (Ca2Al3(SiO4)3(OH))

Amethyst (Amethyst (SiO2 with Iron impurities)) — mineral

Amethyst

Amethyst (SiO2 with Iron impurities)

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

Rough Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Emerald (Faceted Gemstone) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Emerald (Faceted Gemstone)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Citrine (likely Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Chalcedony (Yellow Agate) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Yellow Agate)

Cryptocrystalline Quartz (SiO2)

Vanadinite on Matrix (Vanadinite (Pb5(VO4)3Cl)) — mineral

Vanadinite on Matrix

Vanadinite (Pb5(VO4)3Cl)

Moldavite (Tektite (Impact Glass), ~80% SiO2 + Al2O3) — tektite

Moldavite

Tektite (Impact Glass), ~80% SiO2 + Al2O3

Stichtite in Serpentine (Atlantasite) (Mg6Cr2CO3(OH)16·4H2O in Mg3Si2O5(OH)4) — metamorphic

Stichtite in Serpentine (Atlantasite)

Mg6Cr2CO3(OH)16·4H2O in Mg3Si2O5(OH)4

Quartz Geode (Quartz (Silicon Dioxide, SiO2) Geode) — sedimentary

Quartz Geode

Quartz (Silicon Dioxide, SiO2) Geode

Fire Opal (in matrix) (Hydrated Silica (SiO2·nH2O)) — Mineraloid

Fire Opal (in matrix)

Hydrated Silica (SiO2·nH2O)

Opal (Hydrated silica (SiO2·nH2O)) — mineraloid

Opal

Hydrated silica (SiO2·nH2O)

Amethyst (Crystalline Quartz (SiO2) with iron impurities) — mineral

Amethyst

Crystalline Quartz (SiO2) with iron impurities

Desert Rose (Gypsum (variety Selenite) or Barite, CaSO4·2H2O) — mineral

Desert Rose

Gypsum (variety Selenite) or Barite, CaSO4·2H2O

Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — mineral

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Herkimer Diamond (Quartz) (Silicon Dioxide (SiO2)) — mineral

Herkimer Diamond (Quartz)

Silicon Dioxide (SiO2)