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
System:
Tetragonal
Colour:
brownish orange
Hardness:
3½
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.
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 (Mohs):
3½
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.
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 in formula:
Analytical Data:
Llallagua material, electron microprobe, wt.%, water by difference, Fe mostrly trivalent as confirmed microchemically
SiO2 0.79 SnO2 49.61 Fe2O3 22.07 MnO 5.82 MgO 0.61 H2O 21.10 total 100.00
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 Volume:
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 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.
Empirical Formula:
(Fe3+0.71Mn2+0.21Mg0.04)Σ0.96(Sn0.84Si0.03)Σ0.87(OH)6
Associated Minerals at Type Locality:
Relationship of Jeanbandyite to other Species
Other Members of Group:
| Burtite | Ca[Sn(OH)6] |
| Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] |
| Natanite | Fe2+[Sn(OH)6] |
| Schoenfliesite | Mg[Sn(OH)6] |
| Vismirnovite | Zn[Sn(OH)6] |
| Wickmanite | Mn2+[Sn(OH)6] |
| 4.FC.05 | Bernalite | Fe(OH)3 · nH2O (n = 0.0 to 0.25) |
| 4.FC.05 | Dzhalindite | In(OH)3 |
| 4.FC.05 | Söhngeite | Ga(OH)3 |
| 4.FC.10 | Burtite | Ca[Sn(OH)6] |
| 4.FC.10 | Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] |
| 4.FC.10 | Natanite | Fe2+[Sn(OH)6] |
| 4.FC.10 | Schoenfliesite | Mg[Sn(OH)6] |
| 4.FC.10 | Vismirnovite | Zn[Sn(OH)6] |
| 4.FC.10 | Wickmanite | Mn2+[Sn(OH)6] |
| 4.FC.15 | Mopungite | Na[Sb5+(OH)6] |
| 4.FC.15 | Stottite | Fe2+[Ge4+(OH)6] |
| 4.FC.15 | Tetrawickmanite | Mn2+[Sn4+(OH)6] |
| 4.FC.20 | Ferronigerite-2N1S | (Al,Fe,Zn)2(Al,Sn)6O11(OH) |
| 4.FC.20 | Magnesionigerite-6N6S | (Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH) |
| 4.FC.20 | Magnesionigerite-2N1S | (Mg,Al,Zn)2(Al,Sn)6O11(OH) |
| 4.FC.20 | Ferronigerite-6N6S | (Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH) |
| 4.FC.20 | Zinconigerite-2N1S | (Zn,Al,Mg)2(Al,Sn)6O11(OH) |
| 4.FC.20 | Zinconigerite-6N6S | (Zn,Mg,Al)3(Al,Sn,Fe)8O15(OH) |
| 4.FC.25 | Magnesiotaaffeite-6N’3S | Mg2BeAl6O12 |
| 4.FC.25 | Magnesiotaaffeite-2N’2S | Mg3Al8BeO16 |
| 7.11.1 | Romarchite | SnO |
| 7.11.2 | Cassiterite | SnO2 |
| 7.11.4 | Schoenfliesite | Mg[Sn(OH)6] |
| 7.11.5 | Burtite | Ca[Sn(OH)6] |
| 7.11.6 | Vismirnovite | Zn[Sn(OH)6] |
| 7.11.7 | Wickmanite | Mn2+[Sn(OH)6] |
| 7.11.8 | Tetrawickmanite | Mn2+[Sn4+(OH)6] |
| 7.11.10 | Natanite | Fe2+[Sn(OH)6] |
| 7.11.11 | Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] |
| 7.11.12 | Ferronigerite-2N1S | (Al,Fe,Zn)2(Al,Sn)6O11(OH) |
| 7.11.13 | Magnesionigerite | |
| 7.11.14 | Argutite | GeO2 |
| 7.11.15 | Brunogeierite | Fe22+Ge4+O4 |
| 7.11.16 | Stottite | Fe2+[Ge4+(OH)6] |
| 7.11.17 | Carboirite | FeAl2(GeO4)O(OH)2 |
| 7.11.18 | Otjisumeite | PbGe4O9 |
| 7.11.19 | Bartelkeite | Pb(Fe2+Ge)[Ge2O7](OH)2 · H2O |
| 7.11.20 | Massicot | PbO |
| 7.11.21 | Litharge | PbO |
| 7.11.22 | Minium | Pb3O4 |
| 7.11.23 | Plattnerite | PbO2 |
| 7.11.24 | Scrutinyite | α-PbO2 |
| 7.11.25 | Murdochite | PbCu6O8-x(Cl,Br)2x where x<=0.5 |
| 7.11.26 | Macedonite | PbTiO3 |
| 7.11.27 | Cesàrolite | Pb(Mn4+)3O6(OH)2 |
| 7.11.28 | Coronadite | Pb(Mn64+Mn23+)O16 |
| 7.11.29 | Quenselite | PbMnO2(OH) |
| 7.11.30 | Plumboferrite | Pb2(Fe3+,Mn2+,Mg)11O19 |
| 7.11.31 | Magnetoplumbite | (Pb,Mn)(Fe,Mn)12O19 |
| 7.11.32 | Senaite | Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38 |
Other Names for Jeanbandyite
Name in Other Languages:
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:
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.
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
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External Links:
Mineral Dealers:
Specimens:
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Localities for Jeanbandyite
This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
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(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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 |
| [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