Sandstone and Quartzite Specimens
SiO2 with varying mineral/clastic inclusions
sedimentary/metamorphic
Category
Mineral
Browse mineral specimens identified by the Rock Identifier community.
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Quartzite (River Cobble)
Quartzite (dominant mineral: Quatrz, SiO2)
metamorphic
River Pebble (Brecciated Chert/Siltstone)
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Charoite
Charoite (Complex silicate mineral rock)
metamorphic
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Black Jasper
Black Jasper (Silicate mineral - SiO2)
sedimentary
Fancy Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Manufactured Glass (Simulant)
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Concrete Fragment
Hardened Portland cement and mineral aggregate
sedimentary (anthropogenic)
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Kyawthuite
Kyawthuite (Bi3+Sb5+O4)
mineral
Sandstone (likely Quartzose Sandstone with mineral staining)
Arenite (composed mainly of SiO2)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Labradorite (Raw)
(Ca, Na)(Al, Si)4O8
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix
Iron Disulfide (FeS2)
mineral
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Satin Spar Selenite
Gypsum (CaSO4·2H2O)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pink Satin Spar (Satin Spar Selenite Dyed)
Gypsum (CaSO4·2H2O)
mineral
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Schist
Mica Schist
metamorphic
Moonstone (Tumbled)
Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Albite
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Aventurine Quartz
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Amazonite
Amazonite (Microcline variant: KAlSi3O8)
mineral
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Specularite in Quartz
Specular Hematite (Fe2O3) in Quartz (SiO2)
mineral
Banded Agate (Lake Superior Agate style)
Silicon Dioxide (SiO2)
mineral
Rainbow Moonstone
White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8
gemstone
Amethyst Cluster
Silicon Dioxide (SiO2) with iron impurities
mineral
Rainbow Moonstone (White Labradorite)
White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8)
mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
mineral
Amethyst Geode
Amethyst (Silicon Dioxide, SiO2)
mineral
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Copper-bearing Quartz (with Malachite and Iron Oxides)
Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)
Mineral Specimen