Chert
Silicon Dioxide (Microcrystalline Quartz)
sedimentary
Category
Manufactured Glass
Browse manufactured glass specimens identified by the Rock Identifier community.
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Green Chert
Microcrystalline Quartz (SiO2)
sedimentary
Blue Apatite
Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz in Matrix (possibly with Biotite or Hornblende)
Quartz (Silicon Dioxide, SiO2) in Granitic Matrix
igneous
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz with Mica inclusions
Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz / Common Opal
Silicon Dioxide (SiO2)
mineral
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartz Pebble (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chert (Green variety)
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Quartz (SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz in Epidote Host Rock
Crystalline Silicon Dioxide (SiO2) with Epidote Ca2(Al,Fe)3(SiO4)3(OH)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite river pebble
Quartzite (SiO2)
metamorphic
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock (Quartz arenite or arkose)
sedimentary
Quartz (Raw Crystal)
Silicon Dioxide (SiO2)
mineral
Sand
Siliciclastic sediment / Quartz sand (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz arenite/Arkosic sandstone)
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Microcline Feldspar
KAlSi3O8
mineral