Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Category
Browse metamorphic (localized) or sedimentary specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Pyrite in Matrix (Fool's Gold)
Iron Disulfide (FeS2)
Quartz (Pebble)
Silicon Dioxide (SiO2)
Quartz Crystal Rock
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate, CaCO3
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Faceted)
SiO2 - Silicon Dioxide
Faceted Clear Quartz or Diamond Simulant
Silicon Dioxide (SiO2) if Quartz or Cubic Zirconia (ZrO2) if Synthetic
Galena
Lead(II) sulfide (PbS)
Pyrite
Iron Disulfide (FeS2)
Quartzite with Mica / Gneiss Pebble
Metamorphic Rock (Quartz-Feldspar-Mica aggregate)
Blue Kyanite
Kyanite (Al2SiO5)
Waterworn Pebble / Quartzite
Metamorphic/Sedimentary rock fragment
Pink-and-black gneiss
Foliated granitic gneiss, commonly quartz–feldspar–biotite gneiss
Tiger Iron
Tiger Iron (Hematite, Red Jasper, and Tiger's Eye)
Pyrite in Quartz Matrix
Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Tiny rounded metallic-looking pebble, possibly pyrite or a metal-rich mineral
Uncertain from image; possible pyrite (FeS₂), chalcopyrite (CuFeS₂), or magnetite (Fe₃O₄)
Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Quartz Crystal
Silicon Dioxide (SiO2)
Galena
Lead Sulfide (PbS)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Agate/Jasper pebble)
Silicon Dioxide (SiO2)
Pink Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Yellow Calcite
Calcite (CaCO3)
Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)
FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar group)
Pyrite Nodule
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Pyrite
Iron Pyrite (FeS2)
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)