Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous, Sedimentary, Metamorphic, Mineral
Browse igneous, sedimentary, metamorphic, mineral specimens identified by the Rock Identifier community.
Learn about Igneous, Sedimentary, Metamorphic, Mineral in the encyclopedia
View all →
Quartz (Milk or Clear Variety)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Metamorphic Rock (Schist)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Blue apatite (likely rough/tumbled specimen)
Apatite group, commonly fluorapatite — Ca5(PO4)3F
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Quartz with iron staining
Silicon dioxide (SiO2)
mineral
Garnet-bearing metamorphic rock, likely garnet schist or amphibolite
Almandine garnet (Fe₃Al₂Si₃O₁₂) in mica- or amphibole-rich matrix
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
SiO2 (Silicon Dioxide)
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Quartz Crystal Point
Silicon Dioxide (SiO2)
mineral
Gneiss
Foliated Metamorphic Rock
metamorphic
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Quartz and Unakite
SiO2 (Quartz) / Epidote, Pink Orthoclase, Quartz (Unakite)
mineral/igneous
Small quartz-rich pebble or rock fragment
Quartz (silicon dioxide, SiO₂), possibly with iron-oxide staining or host-rock inclusions
mineral
Weathered quartz-bearing rock, possibly calcite vein fragment
Indeterminate; likely quartz (SiO₂) with carbonate minerals such as calcite (CaCO₃)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
Mineral
Magnetite (Loadstone candidate)
Iron(II,III) oxide (Fe3O4)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral