Quartz with Associated Minerals
Silicon Dioxide (SiO2)
Category
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Quartz with Associated Minerals
Silicon Dioxide (SiO2)
Muscovite Mica
Muscovite, KAl2(AlSi3O10)(OH)2
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Lapis Lazuli
A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).
Small white mineral fragment
Indeterminate; possibly quartz, calcite, or feldspar
Muscovite Mica (Golden/Yellow variety)
KAl2(AlSi3O10)(F,OH)2
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Green Aventurine
SiO2 (Silicon Dioxide with Fuchsite inclusions)
Feldspar in Matrix
Feldspar group minerals in metamorphic or igneous matrix
Snowflake Obsidian
Spherulitic Obsidian (Amorphous Volcanic Glass with Cristobalite inclusions)
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
Obsidian
Obsidian (Volcanic glass, primarily SiO2)
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
Muscovite Mica Schist
Muscovite Schist (KAl2(AlSi3O10)(OH)2)
Muscovite Schist
Mica Schist (primarily KAl2(AlSi3O10)(OH)2)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Fluorite and Mineral Collection
Calcium Fluoride (CaF2)
Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions
Milky quartz (rough quartz fragment)
Quartz, silicon dioxide (SiO₂)
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
Snowflake obsidian cabochon
Obsidian (volcanic glass), SiO₂-rich; white areas are cristobalite/spherulitic devitrification
Obsidian
Volcanic Glass (SiO2)
Quartz Vein Rock
Silicon dioxide (SiO2) within a host rock matrix
Snowflake Obsidian
Spherulitic Obsidian (primarily SiO2 with Cristobalite inclusions)
Snowflake Obsidian
Volcanic glass with Spherulite inclusions (SiO2)
Quartz Mineral Specimens
Quartz (Silicon Dioxide, SiO2)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Milky quartz (likely quartz-rich rock)
Quartz, silicon dioxide (SiO₂)
Citrine or Yellow Quartz
Silicon Dioxide (SiO2) with iron impurities
Smoky quartz (likely)
Quartz, silicon dioxide (SiO₂), naturally irradiated variety
Quartz Mineral
Silicon Dioxide (SiO2)
Mica (Muscovite)
Muscovite (KAl2(AlSi3O10)(OH)2)
Muscovite Mica in Quartz Matrix
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
Amethyst (Raw Quartz)
Silicon Dioxide (SiO2) with iron impurities
Snowflake Obsidian
Obsidian with Cristobalite inclusions (SiO2)
Quartz crystal
Quartz (Silicon dioxide, SiO2)
Quartz (Smoky/Brown variety)
Silicon dioxide (SiO2)
Borosilicate Glass (Manufactured)
SiO2 + B2O3 (Silicon dioxide and Boron trioxide)
Quartz (Clear or Smoky)
Silicon Dioxide (SiO2)
Diamond
Carbon (C)