Quartz Pebble
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Quartz Pebble
Silicon Dioxide (SiO2)
Weathered, quartz-rich metamorphic rock (likely schist or gneiss)
Quartz–feldspar–mica schist/gneiss, with surface lichens and iron-oxide staining
Sandstone
Quartzose Sandstone (Sedimentary Rock)
Chert Nodule / Flint
Microcrystalline Quartz (SiO2)
Sandstone Pebble
Quartz Sandstone
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Arenite
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Basalt with Quartz Veining
Basalt (Mafic Extrusive Igneous Rock) with SiO2 (Silicon Dioxide) veins
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Copper Ore / Altered Granodiorite
Cupriferous rock with silicate gangue
Garnet Schist or Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Rounded quartz-rich pebble
Chert or quartzite pebble (tentative; mostly microcrystalline quartz, SiO₂)
Tumbled milky quartz (likely quartz pebble)
Quartz, silicon dioxide (SiO₂)
Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily Quartz)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
Sandstone
Clastic Sedimentary Rock (Quartz arenite or similar)
White Quartz
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary or volcanic shell
Quartz Geode
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Titanium Quartz (Aura Quartz)
Silicon Dioxide (SiO2) treated with Titanium
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal Fragments)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz Point
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky and Citrine-type Quartz
Silicon Dioxide (SiO2)
Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
White Howlite
Howlite (Hydrated calcium borosilicate, Ca2B5SiO9(OH)5)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Faceted Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz Arenite / Sandstone
Quartz sandstone (SiO2 rich clastic sedimentary rock)
Ferruginous Quartz
Silicon Dioxide (SiO2) with hematite/limonite inclusions