Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Category
Mixed: Igneous And Sedimentary
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
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Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Gneiss (Augen Gneiss)
Augen Gneiss
metamorphic
Sand and Gravel (Quartz-rich)
Unconsolidated fluvial/beach sediment (primarily Silica/SiO2)
sedimentary
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
River Stone (River Rock)
Smooth Clastic Sedimentary Rock
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Chalcedony (common opal or chert variant)
Silicon Dioxide (SiO2)
sedimentary (mineraloid/microcrystalline quartz)
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Carnelian variant)
Cryptocrystalline Silica (SiO2)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Native Gold
Native Gold (Au)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Chlorite/Mica Schist
metamorphic
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
mineral
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Pink Thulite
Thulite (Ca2Al3(SiO4)3(OH)) - Pink Zoisite
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Heliotrope (Bloodstone)
Cryptocrystalline Quartz (SiO2) with inclusions of Hematite (Fe2O3)
mineral
Gneiss
Gneiss
metamorphic
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky or Common Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Gneiss
Foliated Metamorphic Rock
metamorphic
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral