Chert (Flint)
Chert (SiO2)
sedimentary
Category
Mineral, Often Found As A Rock (Metamorphic)
Browse mineral, often found as a rock (metamorphic) specimens identified by the Rock Identifier community.
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Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Peridot
Olivine ((Mg,Fe)2SiO4)
mineral
Chert (Tan/Grey)
Chert (Silicon Dioxide, SiO2)
sedimentary
Milky Quartz (Quartz Vein)
Silicon Dioxide (SiO2)
mineral
Yellow Chert (Chert / Cryptocrystalline Quartz)
Silicon Dioxide (SiO2)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Gneiss
Gneiss
metamorphic
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn)3Si2O5(OH)4
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartzite pebble
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix
metamorphic
Banded Agate
Silicon Dioxide (SiO2) - Variety Agate
mineral
Green Schist
Greenschist (Chlorite Schist)
metamorphic
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (White Chert/Flint)
Chert (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2)
mineral
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Quartz (Milky/Common)
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Sapphire (Tumbled/Polished)
Corundum (Al2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Quartzite Geode or Crystalline Quartz Node
Silicon Dioxide (SiO2)
metamorphic
Banded Gneiss with Quartz Vein
Gneiss containing SiO2 (Quartz) intrusion
metamorphic
Unakite
Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) and KAlSi3O8)
metamorphic
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Zircon
Zircon (Zirconium Silicate - ZrSiO4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Glaucophane Schist (Blueschist)
Blueschist (Glaucophane-bearing schist)
metamorphic
Green Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Quartz Vein in Hematitic Siltstone
Hydrothermal Quartz (SiO2) in Ferriferous Matrix
metamorphic
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Green Quartz / Prasiolite
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Pseudomorph of Crocidolite (SiO2 with iron oxides)
mineral
Gemstone Sand (Mineral Assortment)
Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)
mineral
Chert (variations like Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Mica Schist with Quartz
Mica Schist (primarily Muscovite or Biotite with Quartz)
metamorphic
Fossilized Echinoid (Sea Urchin)
Echinoidea (Class), often found as calcitic fossils
sedimentary