Lapis Lazuli
Lapis lazuli (Mainly Lazurite: Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Category
This Appears To Be A Man Made Metallic Object, Likely Jewelry, Not A Natural Rock, Mineral, Or Geological Specimen.
Browse this appears to be a man made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen. specimens identified by the Rock Identifier community.
Agate (Moss or Banded Agate variety)
Agate (Silicon Dioxide - SiO2)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Ocean Jasper
Silicon Dioxide (SiO2)
Mineral_variety_of_Chalcedony
Citrine
Silicon dioxide (SiO2)
mineral
Moqui Marble (Iron Concretion)
Hematite/Goethite Concretion (Fe2O3 / FeO(OH))
sedimentary
Gold Flake (Placer Gold)
Native Gold (Au)
mineral
Tiger's Eye
SiO2 (Silicon Dioxide) with fibrous crocidolite inclusions
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Diamond
Diamond (C)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Diamond
C (Carbon)
mineral
Precious Coral (Red Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Magnetite / Hematite rich ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
mineral
Ironstone Concretion
Goethite-rich Siltstone / Siderite (FeCO3)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Chalcedony (Agate/Seashell replacement)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Granite
Granitoid
igneous
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
igneous
Sandstone
Arenite
Sedimentary
Specular Hematite (on Schist/Matrix)
Hematite (Alpha-Fe2O3)
mineral
Sunstone
Plagioclase Feldspar (containing (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions)
mineral
Chert (Jasper or Flint variant)
Chert (composed of microcrystalline quartz, SiO2)
sedimentary
Diamond
Diamond (Native Carbon, C)
mineral
Diamond
Natural Carbon (C)
mineral
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Gold-bearing Quartz
Auriferous Quartz (SiO2 with native Au)
mineral
Rose Quartz
Rose Quartz (SiO2 with trace titanium, iron, or manganese)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Tiger's Eye (with Hematite/Jasper)
SiO2 (Silicon Dioxide) with Fe2O3 (Hematite)
mineralogical
Native Copper
Native Copper (Cu)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral