Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
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Pyrite
Iron Disulfide (FeS2)
mineral
Weathered iron-rich rock, possibly garnet schist or mica schist
Foliated metamorphic rock; likely mica schist with iron oxides and quartz, but exact identification is uncertain from the image
metamorphic
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Quartz with Mica
SiO2 (Quartz) with Potassium aluminum silicate (Muscovite)
Mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Moonstone
Potassium aluminum silicate (KAlSi3O8) with Albite (NaAlSi3O8)
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Olivine
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Peridot (Olivine)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Mineral
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate, (Mg,Fe)2SiO4
Mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate)
mineral
Chrome Diopside
Diopside (Magnesium Calcium Silicate) - CaMgSi2O6 + Cr
mineral
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
Mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Beryl (Aquamarine) in Matrix
Beryllium aluminum silicate (Be3Al2(SiO3)6)
mineral
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Chert Pebble (Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Petoskey Stone (Petrified Favosites)
Favosites (extinct colonial coral), CaCO3 with Silica replacement
sedimentary
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Garnet
Silicate mineral group (often Pyrope or Almandine in this color range)
gemstone
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
sedimentary or metamorphic
Quartz-rich vein rock, possibly milky quartz in altered host rock
Quartz (SiO₂), likely with weathered silicate minerals and iron/manganese staining
mineral
Lapis Lazuli and Amazonite
Complex silicate mineral aggregates (Lazurite, Calcite, Pyrite & Microcline feldspar)
mineral
Talc
Talc (Hydrated magnesium silicate, Mg3Si4O10(OH)2)
metamorphic
Sodalite
Na4Al3(SiO4)3Cl (Sodium Aluminum Silicate Chloride)
mineral
Emerald in Matrix
Emerald (Beryllium Aluminum Silicate - Be3Al2(SiO3)6)
mineral
Ruby (Raw Corundum)
Corundum (Al2O3) with Chromium traces
mineral
Mystic Topaz (Treated Quartz or Topaz)
Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating
gemstone
Granite
Phaneritic Igneous Rock (Granite)
igneous