Quartz Pebble
Quartz (SiO2)
Category
Browse sedimentary or igneous specimens identified by the Rock Identifier community.
Quartz Pebble
Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz River Rock
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Magnetite / Hematite (Iron Ore)
Magnetite (Fe3O4) or Hematite (Fe2O3)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Graphite
Graphite (Carbon, C)
Agate
Silicon Dioxide (Chalcedony), SiO2
Quartz Mineral
Silicon Dioxide (SiO2)
Agate
Silicon dioxide (Chalcedony), SiO2
Feldspar
Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Quartz
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Citrine
SiO2 (Silicon Dioxide)
Specular Hematite
Hematite (Fe2O3)
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
Pyrite and Quartz Agglomerate
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Magnetite
Magnetite (Fe3O4)
Blue Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Disulfide (FeS2)
Dalmatian Stone
Dalmatian Stone (formerly called Dalmatian Jasper)
Magnetite
Iron(II,III) oxide (Fe3O4)
Pyrite
Pyrite (FeS₂)
Dalmatian Stone
Peralkaline rhyolite with arfvedsonite inclusions
Dalmatian Jasper / Dalmatian Stone
Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)
Dalmatian Stone
Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)
Likely banded gneiss
Gneiss (quartz–feldspar–mica-rich rock; exact identification uncertain from the photo)
Small pale mineral/rock fragment
Indeterminate; possibly weathered quartz, calcite, or light-colored limestone
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Quartz geode or quartz-bearing rock
Quartz (SiO₂), likely in a chalcedony- or basalt-hosted cavity
Tumbled quartz pebble, possibly citrine or pale smoky quartz
Quartz (SiO₂), likely microcrystalline/tumbled material
Weathered sandstone fragment
Clastic sandstone, likely quartz-rich (quartz arenite or arkose)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)