Banded Agate / Chalcedony
Silicon Dioxide (SiO2) with trace impurities
mineral
Category
Mineral (Specifically, A Variety Of The Mineral Species Pyrope Almandine Garnet)
Browse mineral (specifically, a variety of the mineral species pyrope almandine garnet) specimens identified by the Rock Identifier community.
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Geode (Unopened)
Siliceous Septarian Concretion / Geode (SiO2)
sedimentary
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz (specifically Milky/Gray Quartz vein)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Banded Agate
Cryptocrystalline variety of Quartz (SiO2)
mineral
Yellow Quartz (Citrine type/Tumbled Quartz)
Silicon Dioxide (SiO2)
mineral
Hematite (beads)
Hematite (Fe₂O₃)
Mineral
Moonstone
Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Specularite (Specular Hematite)
Iron Oxide (Fe2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
mineral
Chert (specifically White Chert or Flint)
Microcrystalline or cryptocrystalline quartz (SiO2)
sedimentary
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
metamorphic
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Quartz (likely tumbled or naturally water-worn)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Obsidian
Volcanic Glass (SiO2)
igneous
Red Sandstone
Arenite (primarily Quartz, SiO2, with Iron Oxide cementing agent)
sedimentary
Pyrite
Iron Pyrite (FeS2)
Mineral
Yellow Jasper
Silicon Dioxide (SiO2) - variety Jasper
sedimentary
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Jasper Beach Pebble
Silicon Dioxide (SiO2) - Macro-crystalline Quartz
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (extrusive volcanic rock with secondary mineral infilling)
igneous
New Jade (Serpentine)
Antigorite / Serpentine Group (Mg3Si2O5(OH)4)
metamorphic
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amethyst (variety of Quartz)
SiO2 (Silicon Dioxide)
Mineral
Chrysoprase
Chalcedony (cryptocrystalline silica containing nickel); Chemical Formula: SiO2 with Ni impurities
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral