Sandstone (lithic wake/graywacke variety)
Arenite/Greywacke (SiO2 with lithic fragments)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Sandstone (lithic wake/graywacke variety)
Arenite/Greywacke (SiO2 with lithic fragments)
Common Quartz Pebble
Silicon dioxide (SiO2) rock fragment
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz and Rose Quartz Bracelet
Silicon Dioxide (SiO2)
Quartz (Milky/Smoky Quartz)
Silicon Dioxide (SiO2)
Sandstone (with minor weathering/pitting)
Clastic Sedimentary Rock (composed mostly of SiO2)
Quartzite
Quartzite (chiefly SiO2)
Quartz (likely milky/rose quartz variety)
Quartz (SiO2 - Silicon Dioxide)
Milky Quartz
Silicon Dioxide (SiO2)
Geode (Quartz / Chalcedony Geode)
SiO2 (Silicon Dioxide)
Quartz (Rose or Milky)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (composed primarily of Silicon Dioxide, SiO2)
Gold-bearing Quartz Ore
Auriferous Quartz (SiO2 with Au)
Yellow Quartz River Pebble
Silicon Dioxide (SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
Quartz
Silicon Dioxide (SiO2)
Sandstone (Garden Boulder)
Sandstone (SiO2 dominated)
Quartz Pebble
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz Crystal
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Dalmation Jasper
Aplite with Arfvedsonite inclusions (SiO2 with Na3(Mg,Fe2+)4AlSi8O22(OH)2)
Dalmatian Jasper / Dalmatian Stone
Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)
Sandstone Pebble
Sandstone (Silicon dioxide-rich clastic sedimentary rock)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Quartz (Druzy/Crystalline)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear quartz crystal sphere
Quartz (silicon dioxide, SiO₂)
Milky Quartz
Silicon Dioxide (SiO2)
Chert / Flint Nodule
Microcrystalline quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Weathered foliated metamorphic rock, likely gneiss or schist
Quartz–feldspar–mica metamorphic rock; exact identification requires a fresh surface and mineral tests
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)