Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Category
Mineraloid (Man Made Glass)
Browse mineraloid (man made glass) specimens identified by the Rock Identifier community.
Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Oxide Inclusions
SiO2 with Fe2O3 impurities
Mineral
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz Pebble
SiO2 (Silicon Dioxide)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Milky Quartz with Chlorite/Mica inclusions
Silicon Dioxide (SiO2) with inclusions
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Smoky Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Crystal Point/Fragment)
Silicon Dioxide (SiO2)
mineral
Rough Quartz (likely Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon dioxide (SiO2)
mineral
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic Glass (Amorphous Silicon Dioxide, SiO2)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Green Aventurine (Quartz)
SiO2 (Silicon Dioxide with Fuchsite inclusions)
mineral
Chert (Jasper variation)
Silicon dioxide (SiO2)
sedimentary
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
mineral-based human-made alloy
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Chert (Microcrystalline Quartz)
Chert / SiO2 (Silicon Dioxide)
sedimentary
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
mineral