Agate
Banded Chalcedony (SiO2)
mineral
Category
Igneous And Sedimentary Mixture
Browse igneous and sedimentary mixture specimens identified by the Rock Identifier community.
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Hematite
Hematite, Iron(III) oxide (Fe2O3)
mineral
Pyrite
Pyrite (FeS₂)
Mineral
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
igneous
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Pink Garnet (likely Almandine or Rhodolite)
Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
mineral
Milky Quartz Pebble with Chert
Silicon Dioxide (SiO2)
mineral
Citrine
SiO2 (Silicon Dioxide)
mineral
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Disulfide (FeS2)
Mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (likely Jasper or Chert variety)
Quartz (SiO₂)
Mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Dalmatian Jasper
Peralkaline rhyolite
igneous
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
mineral
Graphite
Graphite (C)
mineral
White Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Variant)
Silicon Dioxide (SiO2)
mineral
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Sedimentary / Mineral
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Pyrite (FeS2)
Mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
igneous
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Agate/Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral