Granodiorite / Granite
Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)
Category
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
Granodiorite / Granite
Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)
River Pebble (Brecciated Chert/Siltstone)
Silicon Dioxide (SiO2) with mineral inclusions
Sandstone (likely Calcareous or Micaceous)
Clastic sedimentary rock (primarily Quartz with Cementing Agents)
Sandstone
Arenite (primarily SiO2)
Black Veined Jasper (Spiderweb Jasper)
Silicon Dioxide (SiO2)
Green Adventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusions
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Aventurine (Tan/Cream colored)
Quartz (SiO2) with mineral inclusions
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) containing iron impurities
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Sand Grain
Silicon Dioxide (SiO2)
Rough Quartz (likely Rose or Amethyst variety)
Silicon Dioxide (SiO2)
Chalcedony (River Stone)
Silicon Dioxide (SiO2)
Quartz (Translucent/Rose variety)
Silicon Dioxide (SiO2)
Quartz nodule (River pebble)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Banded Agate (Crazy Lace/Mexican Agate Variety)
Silicon Dioxide (SiO2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Clear Quartz and Rose Quartz variants)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz / River Cobble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)