Jasper (Multi-color Chert)
Silicon dioxide (SiO2)
sedimentary
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
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Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Mineral
Picture Jasper
Silicon dioxide (SiO2)
sedimentary
Picture Jasper
Jasper (Silicon Dioxide, SiO2 with impurities)
sedimentary
Feldspar (Potassium Feldspar / Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Common Opal (Green Opal / Pistachio Opal)
Hydrated silica (SiO2·nH2O)
mineraloid
Orthoclase (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Red Garnet (Pyrope or Almandine)
Magnesium aluminum silicate (Mg3Al2(SiO4)3) or Iron aluminum silicate (Fe3Al2(SiO4)3)
mineral
Common Opal (Potch)
Hydrated Silica (SiO2·nH2O)
mineral
Olivine (often within Peridotite)
Magnesium iron silicate, (Mg,Fe)2SiO4
mineral
Green Jasper
Silicon Dioxide (SiO2) with impurities of iron(II) silicate
sedimentary
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Mineral
Ferruginous Sandstone (with possible trace fossils)
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)
sedimentary
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Jadeite (Jade)
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Likely serpentine pebble
Serpentinite; predominantly serpentine-group minerals, Mg₃Si₂O₅(OH)₄
metamorphic
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Banded Jasper / Yellow Jasper with Chlorite or Epidote inclusions
Silicon Dioxide (SiO2) with iron oxide and silicate impurities
sedimentary
Polished/tumbled jasper, likely ocean jasper or brecciated jasper
Jasper: microcrystalline quartz (SiO₂) with iron oxides and other silicate impurities
mineral
Rose Quartz
Silicon Dioxide with traces of titanium, iron, or manganese (SiO2)
mineral
Red Jasper
Silicate (SiO2 with Hematite impurities)
sedimentary
Mixed Mineral Bead Bracelet
Polycrystalline and Monocrystalline Silicates/Oxides (Quartz, Howlite, Hematite)
gemstone
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Green Slate (Greenstone)
Foliated Metamorphic Rock (rich in Chlorite/Epidote)
metamorphic
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Imperial Topaz
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
mineral
Green Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.
Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Slag
Anthropogenic Vitreous Silicate / Ferro-silicate Slag
igneous
Green Beryl (Emerald variety)
Beryllium aluminum silicate (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Plume Agate
Silicon Dioxide (SiO2) - Chalcedony Variety
mineral
Talc (Soapstone variety)
Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
Mineral