Gold
Native Gold (Au)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Gold
Native Gold (Au)
Chrysocolla
Hydrated copper silicates (Cu,Al)2H2Si2O5(OH)4·nH2O
Cavansite
Cavansite (Ca(VO)Si4O10·4H2O)
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
Quartz (Clear or Cloudy)
Silicon Dioxide (SiO2)
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Basalt Porphyry
Porphyritic Basalt
Dendritic Agate
Chalcedony (SiO2) with manganese/iron oxide inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Hematite
Iron oxide (Fe2O3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Blue Calcite
Calcium Carbonate (CaCO3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Magnetite (Small Granule)
Magnetite (Fe3O4)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Specular Hematite
Iron(III) oxide (Fe2O3)
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
Blue Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Magnetite / Iron Ore
Magnetite (Fe3O4)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Hematite
Iron(III) oxide (Fe2O3)
Cuprite
Cuprite (Copper(I) oxide, Cu2O)
Likely botryoidal malachite or chrysocolla specimen
Malachite, Cu₂CO₃(OH)₂; possibly chrysocolla, hydrated copper silicate
Red Jasper
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Banded Agate
Silicon dioxide (SiO2) - variety of Chalcedony
Grey Agate (Tumbled)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
Stichtite in Serpentine (Atlantasite)
Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)