Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
Desert Varnish on Sandstone
Ferromanganese coating on Quartz Arenite
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Basalt with Quartz Veining
Basalt (Mafic Extrusive Igneous Rock) with SiO2 (Silicon Dioxide) veins
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Sandstone (Quartz Arenite)
Clastic Sedimentary Rock - Quartz Arenite
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)
Banded Chert or Chert with Quartz Veins
Chert (SiO2)
Ferruginous Sandstone (with Iron Oxide staining)
Clastic Sedimentary Rock - Quartz Arenite/Wacke
Druzy Quartz Geode (likely Smokey Quartz variety)
Silicon Dioxide (SiO2) - specifically a geode formation lined with druzy quartz crystals, with a likely brownish hue indicating smokey quartz.
Clear Quartz
Silicon Dioxide (SiO2) / Rock Crystal
Rutilated Quartz
SiO2 with TiO2 inclusions
Chert (potentially Flint or Mudstone)
Microcrystalline Quartz (SiO2)
Druzy Quartz on Matrix (likely Limestone or Sandstone)
Silicon Dioxide (SiO2) with various trace impurities
Chert / Flint
Cryptocrystalline quartz (SiO2)
Sandstone (Weathered Cobble)
Clastic sedimentary rock (primarily SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz Geode / Druzy Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Coarse-grained Quartz with Feldspar inclusions
Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Silica (SiO2)
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Quartz (Rose or Clear variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Limestone
Calcium Carbonate (CaCO3)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Golden Healer Quartz
Ferruginous Quartz (SiO2 with Fe2O3 inclusions)
Rutilated Quartz
Quartz with Rutile Inclusions (SiO2 with TiO2 inclusions)
Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)