Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Category
Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
Citrine (Tumbled Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble (Chert/Chalcedony)
Silicon Dioxide (SiO2)
Tumbled Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble with Iron Inclusions
Silicon Dioxide (SiO2)
Green Slag Glass (Cullet)
Amorphous Silica (Industrial Glass Byproduct)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Slag
Ferrous slag (by-product of iron smelting)
Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)
Mixed Silicates and Sulfides (SiO2, FeS2)
Pink quartz (likely rose quartz)
Quartz, silicon dioxide (SiO₂), typically massive rose quartz colored by trace elements and microscopic inclusions
Smoky Quartz (Vein Quartz)
Quartz (Silicon Dioxide, SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
Raw Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Crystal)
Silicon Dioxide (SiO2)
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz with Schist Matrix
Crystalline Silicon Dioxide (SiO2) in micaceous schist
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2)
Quartz Crystal with Inclusions
Silicon Dioxide (SiO2)
Weathered quartz-rich rock, possibly chert or milky quartz
Mostly microcrystalline or crystalline quartz (SiO₂), identification uncertain from photograph
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky or Citrine-tinted)
Silicon Dioxide (SiO2)
Sandstone (Iron-stained)
Arenite (primarily SiO2 with Fe2O3 staining)
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Mineral and Rock Collection (Assorted)
Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Quartz Pebble
Silicon Dioxide (SiO2)
Citrine
Citrine (Silicon Dioxide, SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Quartz / Common Opal Transition
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)