HOME
FOTO ATLAS
SYSTEMATIK


MINERAL CLASSIFICATION / SYSTEMATIK der MINERALE

           based on E.H. Nickel & M.C. Nichols (2009), H. Strunz & E.H. Nickel (2001),
           revised by Thomas Witzke (2022)



4. OXIDES, HYDROXIDES
(Oxides, Hydroxides, V[5,6]-Vanadates, Arsenites, Antimonites, Bismutites, Sulfites, Selenites, Tellurites, Iodates)


4.J: Arsenites, Antimonites, Bismuthites


4.JA. Neso-Arsenites, Antimonites and Bismuthites
 
4.JA.005. Reinerite
 
Reinerite Zn3(AsO3)2 orth., Pbam G


 
4.JA.010. Trigonite
 
Trigonite Pb3Mn(AsO3)2(AsO2OH) mon., Pn G


 
4.JA.015. Gabrielsonite
 
Gabrielsonite PbFe3+(AsO3)O orth., P21ma IMA 1966-011, Rd

Gabrielsonite, originally described as PbFe(AsO4)(OH) and as a member of the Descloizite group (or supergroup), was redefined as an arsenite (IMA 17-G). The mineral shows some structural relation, but is not a member of this supergroup.


 
4.JA.020. Chadwickite
 
Chadwickite (UO2)HAsO3 tetr. IMA 1997-005


 
4.JA.025. Derbylite group
 
Derbylite Fe3+4Ti3Sb3+O13(OH) mon., P21/n FOTO G
Tomichite (V,Fe3+)4Ti3As3+O13(OH) mon., A2/m IMA 1978-084
Graeserite Fe4Ti3AsO13(OH) mon., A2/m IMA 1996-010


 
4.JA.030. Hemloite
 
Hemloite (Ti,V,Fe)12(As,Sb)2O23(OH) tric., P1 IMA 1987-015


 
4.JA.035. Zimbabweite
 
Zimbabweite Na(Pb,Na,K)2(Ta,Nb,Ti)4As4O18 orth., Ccmb IMA 1984-034


 
4.JA.040. Finnemanite
 
Finnemanite Pb5(AsO3)3Cl hex., P63/m G


 
4.JA.045. Georgiadesite
 
Georgiadesite Pb4(AsO3)Cl4(OH) mon., P21/c G


 
4.JA.050. Freedite
 
Freedite CuPb8(AsO3)2O3Cl5 mon., C2/m IMA 1984-012


 
4.JA.055. Magnussonite group
 
Magnussonite Mn2+19As3+12O36(OH,Cl)2 cub., Ia3d Rd
Brattforsite Mn2+19As3+12O36Cl2 mon., C2/c IMA 2019-127

Magnussonite: anion-deficient derivative of the fluorite structure, with AsO3 groups. Brattforsite is structurally related to Magnussonite.


 
4.JA.060. Armangite
 
Armangite Mn2+26[As3+6(OH)4O14][As3+6O18](CO3) trig., P3 G

Armangite: anion-deficient derivative of the fluorite structure, with AsO3 groups.


 
4.JA.065. Cafarsite
 
Cafarsite (Ca,Na,)19Ti3Fe3+4Fe2+4(AsO3)28F cub., Pn3 FOTO IMA 1965-036, Rd


 
4.JA.070. Nanlingite
 
Nanlingite Na(Ca5Li)Mg12(AsO3)2[Fe2+(AsO3)6]F14 trig., R3m or R3m A


 
4.JA.075. Rouseite
 
Rouseite Pb2Mn(AsO3)2·2H2O tric., P1 or P1 IMA 1984-071


 
4.JA.080. Seelite group
 
Seelite Mg(UO2)2(AsO3,AsO4)2·7H2O mon., C2/m IMA 1992-005
Dymkovite Ni(UO2)2(AsO3)2·7H2O mon., C2/m IMA 2010-087


 
4.JA.085. Nealite
 
Nealite Pb4Fe(AsO3)2Cl4·2H2O tric., P1 FOTO IMA 1979-050



 
 
4.JB. Neso-Arsenites, Antimonites and Bismuthites, with additional anions (BO3, SO4, SiO4 etc.)
 
4.JB.005. Tooeleite
 
Tooeleite Fe6(AsO3)4(SO4)(OH)4·4H2O mon., C2/m IMA 1990-010


 
4.JB.010. Szklaryite [Dumortierite supergroup]
 
Szklaryite Al6BAs3+3O15 orth., Pbcm IMA 2012-070


 
4.JB.015. Ekatite
 
Ekatite (Fe,Fe2+,Zn)12(AsO3)6(AsO3,SiO3OH)2(OH)6 hex., P63mc IMA 1998-024


 
4.JB.020. Asbecasite
 
Asbecasite Ca3(Be,B)2(Ti,Sn,Fe)As3+6Si2O20 trig., P3c1 IMA 1965-037



 
 
4.JC. Soro-Arsenites, Antimonites and Bismuthites
 
4.JC.005. Paulmooreite
 
Paulmooreite Pb2As2O5 mon., P21/a IMA 1978-004

Paulmooreite: with As2O5 dimers of two corner-sharing AsO3 pyramides.


 
4.JC.010. Fetiasite
 
Fetiasite (Fe2+,Fe3+,Ti4+)3O2As2O5 mon., P21/m FOTO IMA 1991-019

Fetiasite: with As2O5-dimers.


 
4.JC.015. Bianchiniite
 
Bianchiniite Ba2(TiV)(As2O5)2OF tetr., I4/mcm IMA 2019-022

Bianchiniite: with As2O5-dimers.


 
4.JC.020. Gebhardite
 
Gebhardite Pb8O(As2O5)2Cl6 mon., P21/c IMA 1979-071

Gebhardite: with As2O5-dimers.


 
4.JC.025. Vajdakite
 
Vajdakite (Mo6+O2)2As3+2O5·3H2O mon. FOTO IMA 1998-031


 
4.JC.030. Prachařite
 
Prachařite CaSb5+2(As3+2O5)2O2·10H2O trig., P3c1 IMA 2018-081


 
4.JC.035. Schneiderhöhnite
 
Schneiderhöhnite Fe2+Fe3+3As3+5O13 tric., P1 IMA 1973-046

With As2O5 dimers and single AsO3 groups (Cooper & Hawthorne, 2016, Can. Min. 54, 707).


 
4.JC.040. Ludlockite
 
Ludlockite PbFe3+4As3+10O22 tric., A1 FOTO IMA 1969-046

Ludlockite: five corner-sharing AsO3 pyramides forming As5O10 groups (Cooper & Hawthorne, 2016, Can. Min. 54, 707).



 
 
4.JD. Ino-Arsenites, Antimonites and Bismuthites
 
4.JD.005. Leiteite
 
Leiteite ZnAs2O4 mon., P21/c IMA 1976-026

The structure is built up of layers of edge-sharing ZnO4 tetrahedra and chains of edge-sharing AsO3 trigonal pyramides (Ghose et al., 1987, Am. Min. 72, 629).


 
4.JD.010. Trippkeite group
 
Trippkeite Cu2+As3+2O4 tetr., P42/mbc G
Schafarzikite Fe2+Sb3+2O4 tetr., P42/mbc G
Kusachiite Cu2+Bi3+2O4 tetr., P4/ncc FOTO IMA 1992-024
Igelströmite Fe3+(Sb3+Pb)O4 tetr., P42/mbc IMA 2021-035

Trippkeite: the structure contains chains of edge-sharing AsO3 trigonal pyramides.


 
4.JD.015. Apuanite
 
Apuanite Fe3+4Fe2+Sb3+4O12S tetr., P42/mbc FOTO IMA 1978-069

Apuanite: a derivative of the schafarzikite structure, with every third Sb in the (SbO3) pyramides in the chains is replaced by Fe. By additional sulfide anions the coordination of the Fe is increased to 4. By sharing the sulfide, the (FeO3S) polyhedra connect two chains to a band (Mellini & Merlino, 1979, Am. Min. 64, 1235).
Apuanite is formally not a chain antimonate, but placed here because of the close relation to schafarzikite.


 
4.JD.020. Versiliaite
 
Versiliaite (Fe2+2Fe3+2)(Fe3+2Sb3+6)O16S tetr., Pbam IMA 1978-068

Versiliaite: a derivative of the schafarzikite structure, with every fourth Sb in the (SbO3) pyramides in the chains is replaced by Fe. By additional sulfide anions the coordination of the Fe is increased to 4. By sharing the sulfide, the (FeO3S) polyhedra connect two chains to a band (Mellini & Merlino, 1979, Am. Min. 64, 1235).
Versiliaite is formally not a chain antimonate, but placed here because of the close relation to schafarzikite.


 
4.JD.025. Stibivanite
 
Stibivanite Sb2VO5 mon., C2/c FOTO IMA 1980-020

Stibivanite polytypes: Stibivanite-2M (mon., C2/c), Stibivanite-2O (orth., Pmcn).
The structure contains complex ribbons with chains of corner-sharing SbO3 pyramids attached to both sides of chains of edge-sharing tetragonal VO4 pyramides (Merlino et al. 1989, Can. Min. 27, 625)


 
4.JD.030. Karibibite
 
Karibibite Fe3+2As3+4(O,OH)9 orth. FOTO IMA 1973-007

The structure contains chains of edge-sharing AsO3 trigonal pyramides and As2O5 dimers (Colombo et al., 2017, Min. Mag. 81, 1191).



 
 
4.JE. Cyclo-Arsenites, Antimonites and Bismuthites
 
4.JE.005. Stenhuggarite
 
Stenhuggarite CaFe3+(As3+O2)(Sb3+As3+O5) tetr., I41/a IMA 1966-037

Stenhuggarit: with (As3+4O8)4--rings and -O-Sb-O- helices with -OAsO2 side groups, forming (Sb3+As3+O5)4--units.


 
4.JE.010. Lepageite
 
Lepageite Mn2+3(Fe3+7Fe2+4)O3(Sb3+5As3+8O34) tric., P1 IMA 2018-028

Lepageite: the structure contains a 6-membered ring of alternating As3+O3 pyramides and Sb3+O4 groups, connected to a 3-membered ring with an attached As3+O3 group, forming all together [Sb3+4As3+4O19] clusters. Additional isolated As3+O3 pyramides are present (Pieczka et al., Am. Min. 104, 1043).



 
 
4.JF. Phyllo-Arsenites, Antimonites and Bismuthites
 
4.JF.005. Manganarsite
 
Manganarsite Mn3As2O4(OH)4 trig. IMA 1985-037

Manganarsite: layer structure, related to pyrosmalite-(Mn), probably with rings of AsO3 groups.



 
 
4.JG. Tecto-Arsenites, Antimonites and Bismuthites
 
4.JG.005. Cuyaite
 
Cuyaite Ca2Mn3+As3+14O24Cl mon., Pn IMA 2019-126

Cuyaite: 3-dimensional network of AsO3 groups.



 
 
4.JH. Arsenites, Antimonites and Bismuthites, not classified (unknown structure)
 
4.JH.005. Lazarenkoite
 
Lazarenkoite CaFe3+As3O7·3H2O orth. FOTO IMA 1980-076



 
 

G = Grandfathered minerals: original description preceded the establishment of the CNMNC in 1959, and generally regarded as a valid species
A or IMA No. = Minerals approved by the CNMNC
Rd = Redefinition of the mineral approved by the CNMNC
Rn = Renamed with approval by the CNMNC
Q = Questionable mineral


To distinguish from classical Strunz numbering, on hierarchical "group" level, a numbering with 3 digits is used, like "4.JA.005. Reinerite", instead of 2 digits (like "4.JA.05.") in the Strunz system.


© Thomas Witzke (2022)


HOME
FOTO ATLAS
SYSTEMATIK