Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Category
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Garnet (Almandine/Pyrope)
Silicate Mineral (Group: X3Y2(SiO4)3 where X=Mg, Fe, Mn and Y=Al, Fe, Cr)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper
Jasper / Silicon Dioxide (SiO₂)
Blue Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz - SiO₂)
Fancy Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Chert (Jasper/Mudstone)
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Aventurine
Aventurine Quartz (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Galena
Lead Sulfide (PbS)
Quartz
Silicon Dioxide (SiO2)
Chert / Flint
Chert (varieties include Flint)
Banded Quartz
Silicon Dioxide (SiO2)
Banded Agate (Jasper-Agate)
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
Brown Jasper
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Zebra Jasper
Jasper (variety of Quartz/Chalcedony), SiO2
Quartz (Microcrystalline/Gravel)
Silicon Dioxide (SiO2)
Jasper (Red/Brown Variety)
Jasper (Silicon Dioxide, SiO2 plus Iron Oxide impurities)
Chert
Microcrystalline Quartz (SiO2)
Quartz (Iron-stained or Milky)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2) with iron oxide inclusions
Chert (with Limonite staining)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (River Pebble)
Microcrystalline silica (SiO2)
Chert (Jasper)
Silicon dioxide (SiO2)
Obsidian
Obsidian (Volcanic glass, primarily SiO2)
Jasper Shard / Chert
Silicon dioxide (SiO2)
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide and clay impurities
Banded Flint (Polished Stripe Flint)
Silicon Dioxide (SiO2) - variety of Chert
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O