Milky Quartz Cobble
Silicon Dioxide (SiO2)
Category
Browse man made glass mineral simulant specimens identified by the Rock Identifier community.
Milky Quartz Cobble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 primarily)
Snowflake Obsidian
Volcanic Glass (spherulitic Obsidian) - SiO2 (with Cristobalite inclusions)
Amethyst
Quartz (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Sandstone with Concretions / Liesegang Rings
Arenite with iron oxide banding
Tumbled blue sodalite (probable)
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
Likely weathered quartz-bearing rock (uncertain identification)
Possibly quartz-rich granite or granitic aplite; exact identification requires a clearer, larger image and tests
Likely calcite or quartz fragment
Uncertain from image; calcite (CaCO₃) is the leading possibility, with quartz (SiO₂) another possibility
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)
Chert Pebble with Inclusion
Microcrystalline Quartz (SiO2)
Jasper (or possibly Agate/Chalcedony) beads
SiO2 (Silicon Dioxide)
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (with Limestone and Iron Oxide staining)
Cryptocrystalline Quartz (SiO2)
Milky Quartz (Micro-specimen)
Silicon Dioxide (SiO2)
Sandstone (likely Arkose or Lithic)
Clastic sedimentary rock (SiO2 + impurities)
Sandstone (Ferruginous)
Arenite with Iron Oxides
Milky Quartz with Mica Matrix
SiO2 (Silicon Dioxide) with Muscovite/Biotite mica
Quartz with Mica inclusion
Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions
Smoky quartz (rough, water-worn crystal)
Quartz, silicon dioxide (SiO₂), smoky variety
Agate Slices and Clear Quartz Points
Agate (SiO2 Chalcedony) and Clear Quartz (SiO2 Crystalline)
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
Quartz (Smoky or Impure Variety)
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
Iron-Stained Quartz (Riverside Cobble)
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Raw Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide + Fe2O3 / FeO(OH))
Pink Feldspar
Orthoclase (KAlSi3O8) or Microcline
Quartz
Silicon Dioxide (SiO2)
Chert (and Fossiliferous Chert)
Silicon Dioxide (SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Vein with Iron Staining
Silicon Dioxide (SiO2)
Libyan Desert Glass
Libyan Desert Glass (Tektite / Impact Glass)
Fluorite
Calcium fluoride (CaF2)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Fluorite (specifically Blue John or Banded Fluorite)
Calcium Fluoride (CaF2)