Granitic Quartz (with Feldspar inclusions)
Quartz (SiO2) with Potassium Feldspar (KAlSi3O8)
Category
Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.
Granitic Quartz (with Feldspar inclusions)
Quartz (SiO2) with Potassium Feldspar (KAlSi3O8)
Orthoclase (Potassium) Feldspar in Quartz
KAlSi3O8 (Potassium Aluminum Silicate)
Iron-stained Quartz
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
Quartz Vein on Matrix
Silicon Dioxide (SiO2)
Quartz Vein in River Siltstone
Crystalline Quartz (SiO2) in Siliclastic Matrix
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
Obsidian (specifically Rainbow or Silver Sheen Obsidian)
Volcanic Glass (predominantly SiO2)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 primarily)
Rose Quartz
Quartz (Silicon Dioxide - SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2)
Amethyst
SiO2 (Silicon Dioxide) - Purple variety of Quartz
Sandstone
Arenite
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
Smoky Quartz
Silicon Dioxide (SiO2)
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Sea Glass (Cobalt Blue)
Amorphous Silica (Glass with Cobalt additives)
Sandstone
Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)
Botryoidal Chalcedony (likely Desert Rose/Agatized Geode Crust)
Silicon Dioxide (SiO2)
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode form
Sandstone
Arenite (primarily Quartz, SiO2)
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
Raw Diamond (Rough Uncut)
Diamond (C - pure carbon)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Moonstone
Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)
Pyrite
Iron Disulfide (FeS2)
Smoky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)
Rough Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese