Strunz Classification

Strunz Classification
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Minerals arranged by the Strunz Classification System.

Strunz classification courtesy of GEOLIB with updates from MinDAT, Athena, and MinMax).
I Elements
I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides
I/B - Semimetals and nonmetals
II Sulfides
II/A - Alloys and alloylike compounds, with Copper, Silver, Gold and Nickel
II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Copper sulfides Chalcocite group
II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold
II/E - Sulfosalts (S : As,Sb,Bi = x), Sulfosalts with predominant Iron and Copper x = 2.0
II/F - Sulfides with nonmetallic properties, Arsenic-Sulfides
III Halogenides
III/A - Simple halogenides, without water Metal : Halogen = 1 : 1
III/B - Double halogenides without water, with [BF4]1-,[SiF6]2- and [AlF6]3-
III/C - Double halogenides with water, Fluorides
III/D - Oxi-halogenides with Mg - Mn - Cu - Zn - Sn
IV Oxides and Hydroxides
IV/A - Oxides with metal : oxygen = 1:1 and 2:1 (M2O,MO)
IV/B - Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related), Aluminate-Spinels
IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)
IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)
IV/E - Oxides with metal : oxygen < 1:2 (M2O5, MO3)
IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure
IV/G - Vanadium oxides (with V4+/5+), group-vanadates
IV/H - Uranyl ([UO2]2+) hydroxides and hydrates
IV/J - Arsenides with [AsO3]3- groups
IV/K - Sulfides, selenides, tellurides with [XO3]2- groups and related structures
IV/L - Iodates with [IO3]1- groups
V Nitrates, Carbonates and Borates
V/A - Nitrates [NO3]1-
V/B - Waterfree carbonates [CO3]2- without unfamiliar anions
V/C - Waterfree carbonates with unfamiliar anions
V/D - Water-bearing carbonates without unfamiliar anions
V/E - Water-bearing carbonates with unfamiliar anions
V/F - Uranylcarbonates ([UO2]2+ - [CO3]2-)
V/G - "Insel" borates [BO3]3- "inseln"
V/H - Group borates. Planary groups [B2O5]4- to [B2O7]2-
V/J - Chain borates with [B2O4]2- to [B6O10]2-
V/K - Layered borates with complex groups [Bx(O,OH)y]
V/L - Shelly borates with [BO2]1- to [B6O10]2-
VI Sulfates, Chromates, Molybdates and Tungstates
VI/A - Waterfree sulfates [SO4]2- without unfamiliar anions. cations of medium size
VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. cations of medium size
VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium size
VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size
VI/F - Chromates [CrO4]2-
VI/G - Molybdates [MoO4]2- and wolframates [WO4]2-
VII Phosphates, Arsenates and Vanadates
VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of small size: Li, Be, Al
VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH, cations of very small size: Li, Be
VII/C - VII/C Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg
VII/D - Water-bearing phosphates with unfamiliar anions, mostly cations of small size: Be, Li
VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-
VIII Silicates
VIII/A - Nesosilicates (Isolated tetrahedron) structures
VIII/B - Nesosubsilicates (Isolated - semi-isolated tetrahedron) structures
VIII/C - Sorosilicates  (dimer) structures
VIII/D - Unclassified silicate structures
VIII/E - Cyclosilicates (ring) structures
VIII/F - Inosilicates (chain and band) structures
VIII/G - Intermediate (layered - chain) structures.
VIII/H - Phyllosilicates (layered) structures
VIII/J - Tectosilicates (network) structures
IX Organic Compounds
IX/A - Oxalates. Salts from organic acids. [C2O4]2- arranged after increasing cation size
IX/B - Nitrogen-free compounds with C and water, chain structures
IX/C - Resins and other compounds
IX/D - Compounds with N, C and water
  • I-Elements
  • II-Sulfides
  • III-Oxides
  • IV-Halides
  • V-Carbonates
  • VI-Sulfates
  • VII-Phosphates
  • VIII-Silicates
  • IX-Organics

Entire Listing (820 Kb)

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