Quartzite
Quartzite (SiO2)
metamorphic
Category
Antropogenic (Man Made Glass Byproduct)
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 principal component)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Chalcedony (Botryoidal Agate)
Silicon Dioxide (SiO2)
mineral
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic Glass (SiO2)
igneous
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Peridot (Olivine)
Olivine, (Mg, Fe)2SiO4
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
igneous, sedimentary, metamorphic, and mineral
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Sandstone (Greywacke)
Clastic Sedimentary Rock (SiO2 with lithic fragments)
sedimentary
Fluorite
Calcium fluoride (CaF2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Quartzite
Quartzite (predominantly SiO2)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
River Quartz / Quartzite Pebbles
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Granite
Felsic Intrusive Igneous Rock
igneous
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Shale
Argillaceous Rock
sedimentary
Olivine (Peridot)
Olivine (Mg, Fe)2SiO4
mineral
Malachite
Malachite (Cu2CO3(OH)2)
mineral
Olivine (Peridotite)
Magnesium iron silicate (Mg, Fe)2SiO4
igneous
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Olivine (Peridot)
Olivine Group (Mg,Fe)2SiO4
mineral
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
mineral
Black Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
sedimentary
Limestone (Micrite/Chalky variety)
Calcium Carbonate (CaCO3)
sedimentary
River Pebble (Greywacke or Basaltic)
Massive Greywacke or Basaltic Andesite
sedimentary or igneous