Chert (specifically Flint)
Silicon dioxide (SiO2)
Category
Browse mineral (variety of quartz) specimens identified by the Rock Identifier community.
Chert (specifically Flint)
Silicon dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Milky and Citrine-type Quartz
Silicon Dioxide (SiO2)
Dalmatian Stone (Dalmatian Jasper)
Dalmatian Stone (A variety of Perthite / Aplite)
Banded Jasper with Hematite or Quartz
Silicon Dioxide (SiO2) with impurities
Chalcedony (or a variety of Chalcedony, likely Agate or Jasper)
Chalcedony (SiO₂)
Chert (Jasper or Flint variant)
Chert (composed of microcrystalline quartz, SiO2)
Banded Agate (specifically sardonyx or carnelian agate variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Banded Agate (specifically Black Sardonyx/Onyx variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chert (White/Gray variety)
Chert (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Fluorite (Blue)
Calcium Fluoride (CaF2)
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Jade (likely Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
Rutile in Quartz (Rutilated Quartz)
SiO2 with TiO2 inclusions
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Blue-dyed Quartz Druzy
Silicon Dioxide (SiO2) with artificial pigment
Granitic Pegmatite (Muscovite and Quartz)
Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Rose Quartz (SiO₂)
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
White Quartz (Mushroom Carving)
Quartz (Silicon Dioxide - SiO2)
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper influence)
Microcrystalline Quartz (SiO2)
Diorite
Phaneritic Intrusive Igneous Rock (composed of Plagioclase feldspar, Hornblende, and Biotite)
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz and Feldspar Pegmatite
Granitic Pegmatite (chiefly SiO2 and KAlSi3O8)
Pyrite on Quartz matrix
Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)
Chert (White Variety)
Silicon Dioxide (SiO2)
Greisen
Greisen
River Pebbles and Quartz
Mixed Igneous, Sedimentary, and Metamorphic Rocks (Silicon Dioxide SiO2 dominant)
Bloodstone / Heliotrope
Silicon dioxide (SiO2) with inclusions
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with impurities