Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
Quartz Pebble
Silicon Dioxide (SiO2)
Mixed Tumbled Quartz and Chlorite Quartz
Silicon Dioxide (SiO2) with inclusions
Tiger's Eye (Golden and Blue Pietersite mix)
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Conglomerate
Conglomerate
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
Pyrite (Fools Gold)
Iron Disulfide (FeS2)
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar group)
Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Pyrite (FeS2)
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Galena
Lead Sulfide (PbS)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Agate/Jasper pebble)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Likely quartz-rich pebble fragment
Quartz (SiO₂), possibly milky quartz or quartzite; the photo is insufficient to distinguish them confidently
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)
Mixed Silicates and Oxides (predominantly SiO2 group minerals)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Magnetite / Iron Ore
Magnetite (Fe3O4)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Magnetite
Magnetite (Fe3O4)
Magnetite (Small Granule)
Magnetite (Fe3O4)
Quartz-bearing granite or pegmatite fragment
Likely granitic material composed mainly of quartz (SiO₂), feldspar, and possibly biotite or hornblende
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
Tiger's Eye
Quartz pseudomorph after crocidolite (SiO2)