Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Iron, or Manganese
Agated Chert
Microcrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Dyed Quartz Pendant
Silicon Dioxide (SiO2) with artificial dye
Agate Geode
Silicon Dioxide (Chalcedony/Quartz), SiO2
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
Sandstone (Weathered Cobble)
Clastic sedimentary rock (primarily SiO2)
Sandstone / Quartzite
Sedimentary quartz arenite
Banded Sandstone
Clastic Sedimentary Rock (Quartz Arenite)
Weathered sandstone or arkosic sandstone
Clastic sandstone, likely quartz–feldspar-rich (arkose)
Weathered sandstone or siltstone
Clastic sedimentary rock, chiefly quartz and feldspar grains cemented by silica, iron oxides, or carbonate
White Quartz
Silicon Dioxide (SiO2)
Quartzite with Quartz Veining
Metamorphosed Sandstone (SiO2 with impurities)
Flint / Chert (or fossiliferous nodule)
Microcrystalline quartz (SiO2)
Clear Quartz Crystal on Matrix
SiO2 (Silicon Dioxide)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone
Clastic sedimentary rock composed mainly of quartz sand
Quartz
Silicon Dioxide (SiO2)
Sandstone / Chert Gravel
SiO2 (Silicon Dioxide based clastic sedimentary rock)
Quartz Geode
Silicon Dioxide (SiO2) in Geodic habit
Tumbled pale greenish stone, likely serpentine or altered limestone
Probable serpentine-group rock (antigorite/lizardite), possibly serpentinite; identification is visual only
Milky Quartz (Carved Star Beads)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz
Silicon Dioxide (SiO2) / Rock Crystal
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Weathered mica-rich metamorphic rock
Probable biotite schist or mica schist
White Quartz
Silicon Dioxide (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert (Arrowhead Fragment)
Cryptocrystalline quartz (SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebbles
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Banded Chert or Chert with Quartz Veins
Chert (SiO2)
Quartzite with Quartz Veining
Metamorphic Quartz Rock (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Banded Agate
Cryptocrystalline Quartz (SiO2)