Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Man Made Glass)
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pink Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
mineral
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
igneous
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Quartz (specifically Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
mineral
Fluorite (left), Sodalite (middle), Dumortierite/Tumbled Quartzite (right)
Calcium Fluoride (CaF2), Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2), Aluminum Borosilicate (Al7(BO3)(SiO4)3O3)
mineral
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Metamorphic Rock / Mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide)
Igneous
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Mica (Biotite or Phlogopite variety)
Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebbles
Silicon Dioxide (SiO2)
mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic glass (SiO2-rich extrusive igneous rock)
igneous
Quartz with Mica inclusions (likely Iron-stained)
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Obsidian
Obsidian (volcanic glass; primarily SiO2)
igneous
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Lemon Quartz (Orizaba/Citrinated Quartz)
Silicon Dioxide (SiO2) with iron impurities/treatment
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Snowflake Obsidian
Volcanic Glass with Spherulitic Cristobalite (SiO2)
igneous
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.
Quartz on Schist
Silicon Dioxide (SiO2) on Foliated Metamorphic Rock
metamorphic
Muscovite (Mica) in Quartz Matrix
Muscovite (KAl2(AlSi3O10)(OH)2) and Quartz (SiO2)
mineral
Quartz / Common Opal
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble with Chert
Silicon Dioxide (SiO2)
mineral
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral