Jeanbandyite
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Formula:
Fe3+xFe2+1-xSn(OH)6-xOx (1 ≥ x > 0.5)
Ideal end-member: Fe3+Sn(OH)5O; originally assumed to be (Fe3+1-x,◻x)(Sn1-y,◻y)(OH)6
Colour:
brownish orange
Hardness:
3½
Specific Gravity:
3.81
Crystal System:
Tetragonal
Member of:
Name:
Honouring Mrs. Jean Bandy (1900-1991), who donated to the Los Angeles Natural History Museum the collection on one of whose specimens this new mineral was discovered.
Type Locality:
Dimorph of:
Stottite Group. Jeanbandyite and natanite represent the only hydroxide-bearing minerals with dominant Fe and Sn.
Oxidised counterpart of natanite with partially deprotonated oxygen sites. Double perovskite of BB'(OH)6 type. The deprotonated domains have local short-range order.
A dark violet and hard mineral of the (Fe,Mn)(Sn,Ge)(OH)6 composition is reported as "Mineral D" and the Sn-analogue of stottite, from Tsumeb, Namibia (Geier & Ottemann, 1970).
Oxidised counterpart of natanite with partially deprotonated oxygen sites. Double perovskite of BB'(OH)6 type. The deprotonated domains have local short-range order.
A dark violet and hard mineral of the (Fe,Mn)(Sn,Ge)(OH)6 composition is reported as "Mineral D" and the Sn-analogue of stottite, from Tsumeb, Namibia (Geier & Ottemann, 1970).
Classification of Jeanbandyite
Approved
Approval Year:
1980
4/F.17-30
4.FC.15
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
C : Hydroxides with OH, without H2O; corner-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
C : Hydroxides with OH, without H2O; corner-sharing octahedra
6.3.7.3
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
7.11.9
7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
Physical Properties of Jeanbandyite
Colour:
brownish orange
Streak:
brownish yellow
Hardness:
3½ on Mohs scale
Comment:
ca. 3.5
Cleavage:
Imperfect/Fair
{001} and {100}
{001} and {100}
Density:
3.81(5) g/cm3 (Measured) 3.81 g/cm3 (Calculated)
Optical Data of Jeanbandyite
Type:
Uniaxial (-)
RI values:
nω = 1.837 nε = 1.833
Max Birefringence:
δ = 0.004

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemical Properties of Jeanbandyite
Formula:
Fe3+xFe2+1-xSn(OH)6-xOx (1 ≥ x > 0.5)
Ideal end-member: Fe3+Sn(OH)5O; originally assumed to be (Fe3+1-x,◻x)(Sn1-y,◻y)(OH)6
Ideal end-member: Fe3+Sn(OH)5O; originally assumed to be (Fe3+1-x,◻x)(Sn1-y,◻y)(OH)6
IMA Formula:
Fe3+Sn(OH)5O
Elements listed:
Common Impurities:
Mn,(Mg,Si)
Crystallography of Jeanbandyite
Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
P42/n
Cell Parameters:
a = 7.64 Å, c = 7.64 Å
Ratio:
a:c = 1 : 1
Unit Cell V:
445.94 ų (Calculated from Unit Cell)
Z:
4
Comment:
New refinement gives cubic cell, space group Pn-3, a=7.6427 or 7.658; on the other hand the stoichiometry (see the current formula) does not fit to such structure
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.83 | (100) |
2.71 | (70) |
1.71 | (60) |
Type Occurrence of Jeanbandyite
Place of Conservation of Type Material:
Los Angeles County Natural History Museum (California)
Geological Setting of Type Material:
Telescoped hydrothermal tin mineralization in a highly altered acid igneous stock.
Associated Minerals at Type Locality:
Synonyms of Jeanbandyite
Other Language Names for Jeanbandyite
Relationship of Jeanbandyite to other Species
Member of:
Other Members of this group:
Burtite | Ca[Sn(OH)6] | Iso. |
Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] | |
Natanite | Fe2+[Sn(OH)6] | Iso. m3m (4/m 3 2/m) : Pn3m |
Schoenfliesite | Mg[Sn(OH)6] | Iso. m3 (2/m 3) : Pn3 |
Vismirnovite | Zn[Sn(OH)6] | Iso. |
Wickmanite | Mn2+[Sn(OH)6] | Iso. m3 (2/m 3) : Pn3 |
Common Associates
Associated Minerals Based on Photo Data:
Crandallite | 3 photos of Jeanbandyite associated with Crandallite on mindat.org. |
Wickmanite | 3 photos of Jeanbandyite associated with Wickmanite on mindat.org. |
Stannite | 3 photos of Jeanbandyite associated with Stannite on mindat.org. |
Pyrite | 3 photos of Jeanbandyite associated with Pyrite on mindat.org. |
Wolframite | 2 photos of Jeanbandyite associated with Wolframite on mindat.org. |
Arsenopyrite | 1 photo of Jeanbandyite associated with Arsenopyrite on mindat.org. |
Scorodite | 1 photo of Jeanbandyite associated with Scorodite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
4.FC.05 | Bernalite | Fe(OH)3 · nH2O (n = 0.0 to 0.25) | Orth. mmm (2/m 2/m 2/m) : Pmmn |
4.FC.05 | Dzhalindite | In(OH)3 | Iso. |
4.FC.05 | Söhngeite | Ga(OH)3 | Tet. |
4.FC.10 | Burtite | Ca[Sn(OH)6] | Iso. |
4.FC.10 | Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] | |
4.FC.10 | Natanite | Fe2+[Sn(OH)6] | Iso. m3m (4/m 3 2/m) : Pn3m |
4.FC.10 | Schoenfliesite | Mg[Sn(OH)6] | Iso. m3 (2/m 3) : Pn3 |
4.FC.10 | Vismirnovite | Zn[Sn(OH)6] | Iso. |
4.FC.10 | Wickmanite | Mn2+[Sn(OH)6] | Iso. m3 (2/m 3) : Pn3 |
4.FC.15 | Mopungite | Na[Sb5+(OH)6] | Tet. 4/m : P42/n |
4.FC.15 | Stottite | Fe2+[Ge4+(OH)6] | Tet. |
4.FC.15 | Tetrawickmanite | Mn2+[Sn4+(OH)6] | Tet. 4/m : P42/n |
4.FC.20 | Ferronigerite-2N1S | (Al,Fe,Zn)2(Al,Sn)6O11(OH) | Trig. 3m (3 2/m) : P3m1 |
4.FC.20 | Magnesionigerite-6N6S | (Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH) | Trig. 3m (3 2/m) : R3m |
4.FC.20 | Magnesionigerite-2N1S | (Mg,Al,Zn)2(Al,Sn)6O11(OH) | Trig. 3m (3 2/m) : P3m1 |
4.FC.20 | Ferronigerite-6N6S | (Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH) | Trig. 3m (3 2/m) : R3m |
4.FC.20 | Zinconigerite-2N1S | (Zn,Al,Mg)2(Al,Sn)6O11(OH) | Trig. 3m (3 2/m) : P3m1 |
4.FC.20 | Zinconigerite-6N6S | (Zn,Mg,Al)3(Al,Sn,Fe)8O15(OH) | Trig. 3m (3 2/m) : R3m |
4.FC.25 | Magnesiotaaffeite-6N’3S | Mg2BeAl6O12 | Trig. |
4.FC.25 | Magnesiotaaffeite-2N’2S | Mg3Al8BeO16 | Hex. 6/mmm (6/m 2/m 2/m) |
Related Minerals - Dana Grouping (8th Ed.)
6.3.7.1 | Stottite | Fe2+[Ge4+(OH)6] | Tet. |
6.3.7.2 | Tetrawickmanite | Mn2+[Sn4+(OH)6] | Tet. 4/m : P42/n |
6.3.7.4 | Mopungite | Na[Sb5+(OH)6] | Tet. 4/m : P42/n |
Related Minerals - Hey's Chemical Index of Minerals Grouping
7.11.1 | Romarchite | SnO | Tet. |
7.11.2 | Cassiterite | SnO2 | Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm |
7.11.4 | Schoenfliesite | Mg[Sn(OH)6] | Iso. m3 (2/m 3) : Pn3 |
7.11.5 | Burtite | Ca[Sn(OH)6] | Iso. |
7.11.6 | Vismirnovite | Zn[Sn(OH)6] | Iso. |
7.11.7 | Wickmanite | Mn2+[Sn(OH)6] | Iso. m3 (2/m 3) : Pn3 |
7.11.8 | Tetrawickmanite | Mn2+[Sn4+(OH)6] | Tet. 4/m : P42/n |
7.11.10 | Natanite | Fe2+[Sn(OH)6] | Iso. m3m (4/m 3 2/m) : Pn3m |
7.11.11 | Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] | |
7.11.12 | Ferronigerite-2N1S | (Al,Fe,Zn)2(Al,Sn)6O11(OH) | Trig. 3m (3 2/m) : P3m1 |
7.11.13 | Magnesionigerite | Trig. | |
7.11.14 | Argutite | GeO2 | Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm |
7.11.15 | Brunogeierite | Fe2+2Ge4+O4 | Iso. m3m (4/m 3 2/m) : Fd3m |
7.11.16 | Stottite | Fe2+[Ge4+(OH)6] | Tet. |
7.11.17 | Carboirite | FeAl2(GeO4)O(OH)2 | Tric. |
7.11.18 | Otjisumeite | PbGe4O9 | Tric. |
7.11.19 | Bartelkeite | Pb(Fe2+Ge)[Ge2O7](OH)2 · H2O | Mon. 2/m : P21/m |
7.11.20 | Massicot | PbO | Orth. mmm (2/m 2/m 2/m) : Cmmm |
7.11.21 | Litharge | PbO | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
7.11.22 | Minium | Pb3O4 | Tet. 4/mmm (4/m 2/m 2/m) : P42/mbc |
7.11.23 | Plattnerite | PbO2 | Tet. 4/mmm (4/m 2/m 2/m) |
7.11.24 | Scrutinyite | α-PbO2 | Orth. |
7.11.25 | Murdochite | PbCu6O8-x(Cl,Br)2x where x<=0.5 | Iso. m3m (4/m 3 2/m) : Fm3m |
7.11.26 | Macedonite | PbTiO3 | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
7.11.27 | Cesàrolite | Pb(Mn4+)3O6(OH)2 | |
7.11.28 | Coronadite | Pb(Mn4+6Mn3+2)O16 | Mon. 2/m |
7.11.29 | Quenselite | PbMnO2(OH) | Mon. 2/m : P2/b |
7.11.30 | Plumboferrite | Pb2(Fe3+,Mn2+,Mg)11O19 | Trig. 3 2 |
7.11.31 | Magnetoplumbite | (Pb,Mn)(Fe,Mn)12O19 | Hex. |
7.11.32 | Senaite | Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38 | Trig. |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Jeanbandyite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Geier, B.H., Ottemann, J. (1970) New secondary tin-germanium and primary tungsten-(molybdenum, vanadium-) germanium minerals from the Tsumeb ore-deposit. Neues Jahrb. Mineral. Abhandl.: 114: 89-107.
Fleischer, M. (1971) New mineral names. American Mineralogist: 56: 1487-1489.
Kampf, A.R. (1982) Jeanbandyite, a new member of the stottite group from
Llallagua, Bolivia. Mineralogical Record: 13: 235-239.
Dunn, P.J., Fleischer, M., Burns, R.G., Pabst, A. (1983) New mineral names. American Mineralogist: 68: 471-475.
Betterton, J., Green, D.I., Jewson, C., Spratt, J., Tandy, P. (1998) The composition and structure of jeanbandyite and natanite. Mineralogical Magazine: 62: 707-712.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016)
Welch, M.D., Kampf, A.R. (2017) Stoichiometric partially-protonated states in hydroxide perovskites: the jeanbandyite enigma revisited. Mineralogical Magazine: 81: 297-303.
Mitchell, R.H., Welch, M.D., Chakhmouradian, A.R. (2017) Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition. Mineralogical Magazine: 81: 411-461.
Internet Links for Jeanbandyite
mindat.org URL:
https://www.mindat.org/min-2084.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Jeanbandyite
Locality List




All localities listed without proper references should be considered as questionable.
Bolivia (TL) | |
| Kampf, A. R. (1982): Jeanbandyite a new member of the stottite group from Llallagua, Bolivia. Mineralogical Record 13 (4), 235-239.; [MinRec 32:474] |
Canada | |
| M.E. Ciriotti collection 03.09.2010 (ex Cooke collection); Betterton J, Green D I, Jewson C, Spratt J, Tandy P (1998) The composition and structure of jeanbandyite and natanite. Mineralogical Magazine 62, 707-712 |
Mexico | |
| Megaw, P.K.M., 1990b, Geology and geochemistry of the Santa Eulalia mining district, Chihuahua, Mexico.: Unpublished Ph.D. Thesis, Univ. of Arizona, 549 p |
| Peter Megaw Collection |
Namibia | |
| Geier, B.H., Ottemann, J. (1970): New secondary tin-germanium and primary tungsten-(molybdenum, vanadium-) germanium minerals from the Tsumeb ore-deposit. Neues Jahrb. Mineral. Abhandl.: 114: 89-107; in: Fleischer, M. (1971): New mineral names. American Mineralogist: 56: 1487-1489 |
UK | |
| Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25; Betterton J, Green D I, Jewson C, Spratt J, Tandy P (1998) The composition and structure of jeanbandyite and natanite. Mineralogical Magazine 62, 707-712 |
| Martin Stolworthy Collection |
| Specimens collected by David Moulding and now in the collection of D. H. Ifold. |
| [UKJMM 20:7-37]; Betterton J, Green D I, Jewson C, Spratt J, Tandy P (1998) The composition and structure of jeanbandyite and natanite. Mineralogical Magazine 62, 707-712 |
Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK