Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous, Sedimentary, And Metamorphic
Browse igneous, sedimentary, and metamorphic specimens identified by the Rock Identifier community.
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Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Likely quartz-rich metamorphic rock (quartzite or quartz-veined schist)
Quartzite/siliceous schist; chiefly quartz (SiO₂), with probable mica and iron-oxide staining
metamorphic
Fossiliferous limestone fragment
Calcitic limestone; mainly calcium carbonate (CaCO₃), possibly with shell or coral debris
sedimentary
Citrine
Silicon Dioxide (SiO2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Magnetite (potentially Hematite)
Magnetite (Fe₃O₄)
mineral
Pale green translucent mineral fragment, likely calcite
Calcite (CaCO₃), tentatively; possibly green fluorite or prehnite
mineral
Magnetite (Octahedral Crystal)
Magnetite (Fe3O4)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide, SiO2 (Quartz variety)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral