Fluorite
Calcium Fluoride (CaF2)
mineral
Category
Mixed: Igneous And Sedimentary
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Gold Nugget
Native Gold (Au)
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Pyrite (Iron Pyrite)
Iron Disulfide (FeS2)
mineral
Quartz (Milky/Crystalline)
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Chalcedony (Smoky Quartz or Agate nodule fragment)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Agate (Carnelian-like)
Chalcedony (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Mica Schist
Schist (Muscovite/Biotite Schist)
metamorphic
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Dalmation Stone (Dyed)
Peralkaline rhyolite
igneous
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
metamorphic
Carnelian (Red Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Quartz variety)
Cryptocrystalline Quartz (SiO2)
mineral
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Magnetite (Small Granule)
Magnetite (Fe3O4)
mineral
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Variant)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz (Smoky or Clear variety with inclusions)
Silicon Dioxide (SiO2)
mineral
Chalcedony (specifically Agate or Moonstone-like Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral