Quartz
Silicon Dioxide (SiO2)
Category
Browse metamorphic, likely sedimentary with quartz veins specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Quartzite pebble with Mafic inclusions
Quartzite (SiO2)
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz Veined Mudstone
Metasedimentary rock with Quartz (SiO2) veins
Citrine Quartz Cluster
Silicon Dioxide (SiO2)
Milky quartz–rich rock
Quartz (SiO₂), likely massive milky quartz with minor dark inclusions
Rose Quartz
Silicon Dioxide (Quartz), SiO2
Quartz Crystal
Silicon Dioxide (SiO2)
Tumbled Quartz
Silicon Dioxide (SiO2)
Quartz
SiO2
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (or Chalcedony) Specimen
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
River Stone (Quartzite/Chert)
Metamorphosed Quartz-rich Sedimentary Rock
Milky quartz vein fragment
Quartz, silicon dioxide (SiO₂)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz with Schist Matrix
Crystalline Silicon Dioxide (SiO2) in micaceous schist
Quartz / Common Opal
Silicon Dioxide (SiO2)
Orange Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Tumbled pale quartz/chalcedony fragment
Quartz (SiO₂), possibly microcrystalline chalcedony
Quartz-rich sandstone or quartzite fragment
Likely quartz arenite; possibly weakly metamorphosed quartzite (mostly SiO₂)
Chert / Flint
Microcrystalline Quartz (SiO2)
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
Mixed rock and mineral specimen collection
Multiple species, likely quartz (SiO₂), calcite (CaCO₃), feldspar, chert, and assorted volcanic/sedimentary rocks
Felsic gneiss, likely granitic gneiss
Quartz–feldspar–mica gneiss; commonly quartz + plagioclase/K-feldspar + biotite or hornblende
Quartz and Mixed Sedimentary Rocks
Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartzite river stone
Quartzite (SiO2)