Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Category
Browse mineral (variety of quartz) specimens identified by the Rock Identifier community.
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Ferruginous Quartz (Red Quartz)
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Chert
Microcrystalline Quartz (SiO2)
Amethyst (Chevron Amethyst)
Amethystine Quartz (SiO2)
Amethyst (Quartz variety)
Silicon Dioxide (SiO2) with iron impurities
Quartz
Quartz (SiO2)
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with varying mineral impurities
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Agate with Quartz Druzy
Silicon Dioxide (SiO2) - Microcrystalline and Macrocrystalline varieties
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Red Jasper
Chalcedony/Quartz (SiO2) with iron inclusions
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium or Manganese
Jasper (Iron-stained)
Silicon Dioxide (SiO2) with iron oxide inclusions
Smoky Quartz
Quartz (SiO₂)
Granite (specifically the Ubatuba variety)
Phaneritic Igneous Rock (Granodiorite/Monzogranite)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2)
Quartz (Microcrystalline variety)
Silicon Dioxide (SiO2)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Chert (Grey-Green Var.)
Silicon Dioxide (SiO2)
Quartz (likely milky/gray variety)
Quartz (SiO₂)
Quartz (Rose/Milky variety)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Yellow/Citrine variety)
Crystalline Silicon Dioxide (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Red Jasper (Skull Carving)
Jasper, a cryptocrystalline variety of Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz Geode/Druzy Quartz
Quartz (SiO₂)
Agate Nodule (partially vuggy Quartz)
Silicon Dioxide (SiO2)
Citrine
Silicon dioxide (SiO2) - yellow quartz variety
Tiger's Eye
Silicon dioxide with crocidolite fibers (SiO2 with chrysotile amphibole inclusions)
Geode with Quartz and Chalcedony
Silicon Dioxide (SiO2)
Banded Onyx (Cave Calcite)
Calcite (CaCO3), often called Mexican Onyx or Travertine
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide with trace inclusions (SiO2)
Citrine Quartz
Silicon Dioxide (SiO2)
Quartz Pebble (Iron-Stained)
Crystalline Silicon Dioxide (SiO2)
Orbicular Jasper (Ocean Jasper or Poppy Jasper variant)
Silicon Dioxide (SiO2) with various inclusions