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Jeanbandyite

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Formula:
(Fe3+,Mn2+)Sn4+(OH,O)6
System:
Tetragonal
Colour:
brownish orange
Hardness:
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).


Classification of Jeanbandyite

Approved
Approval Year:
1980
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
6.3.7.3

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
7.11.9

7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb

Physical Properties of Jeanbandyite

Colour:
brownish orange
Streak:
brownish yellow
Hardness (Mohs):
Comment:
ca. 3.5
Cleavage:
Imperfect/Fair
{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

IMA Formula:
(Fe3+,Mn2+)Sn4+(OH,O)6
Mindat.org 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
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-spacingIntensity
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

Relationship of Jeanbandyite to other Species

Other Members of Group:
BurtiteCa[Sn(OH)6]
Mushistonite(Cu,Zn,Fe2+)[Sn(OH)6]
NataniteFe2+[Sn(OH)6]
SchoenfliesiteMg[Sn(OH)6]
VismirnoviteZn[Sn(OH)6]
WickmaniteMn2+[Sn(OH)6]
4.FC.05BernaliteFe(OH)3
4.FC.05DzhalinditeIn(OH)3
4.FC.05SöhngeiteGa(OH)3
4.FC.10BurtiteCaSn4+(OH)6
4.FC.10MushistoniteCu2+Sn4+(OH)6
4.FC.10NataniteFe2+Sn4+(OH)6
4.FC.10SchoenfliesiteMgSn(OH)6
4.FC.10VismirnoviteZnSn(OH)6
4.FC.10WickmaniteMn2+Sn4+(OH)6
4.FC.15MopungiteNaSb5+(OH)6
4.FC.15StottiteFe2+Ge4+(OH)6
4.FC.15TetrawickmaniteMn2+Sn4+(OH)6
4.FC.20Ferronigerite-2N1S(Al,Fe,Zn)2(Al,Sn)6O11(OH)
4.FC.20Magnesionigerite-6N6S(Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH)
4.FC.20Magnesionigerite-2N1S(Mg,Al,Zn)2(Al,Sn)6O11(OH)
4.FC.20Ferronigerite-6N6S(Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH)
4.FC.20Zinconigerite-2N1S(Zn,Al,Mg)2(Al,Sn)6O11(OH)
4.FC.20Zinconigerite-6N6S(Zn,Mg,Al)3(Al,Sn,Fe)8O15(OH)
4.FC.25Magnesiotaaffeite-6N’3SMg2BeAl6O12
4.FC.25Magnesiotaaffeite-2N’2SMg3BeAl8O16
7.11.1RomarchiteSnO
7.11.2CassiteriteSnO2
7.11.4SchoenfliesiteMgSn(OH)6
7.11.5BurtiteCaSn4+(OH)6
7.11.6VismirnoviteZnSn(OH)6
7.11.7WickmaniteMn2+Sn4+(OH)6
7.11.8TetrawickmaniteMn2+Sn4+(OH)6
7.11.10NataniteFe2+Sn4+(OH)6
7.11.11MushistoniteCu2+Sn4+(OH)6
7.11.12Ferronigerite-2N1S(Al,Fe,Zn)2(Al,Sn)6O11(OH)
7.11.13Magnesionigerite
7.11.14ArgutiteGeO2
7.11.15BrunogeieriteFe22+Ge4+O4
7.11.16StottiteFe2+Ge4+(OH)6
7.11.17CarboiriteFe2+Al2GeO5(OH)2
7.11.18OtjisumeitePbGe4O9
7.11.19BartelkeitePbFeGe(Ge2O7)(OH)2 · H2O
7.11.20MassicotPbO
7.11.21LithargePbO
7.11.22MiniumPb22+Pb4+O4
7.11.23PlattneritePbO2
7.11.24ScrutinyitePbO2
7.11.25MurdochiteCu12Pb2O15Cl2
7.11.26MacedonitePbTiO3
7.11.27CesàrolitePbMn34+O6(OH)2
7.11.28CoronaditePb(Mn64+Mn23+)O16
7.11.29QuenselitePbMn3+O2(OH)
7.11.30PlumboferritePb2(Fe3+,Mn2+,Mg)11O19
7.11.31MagnetoplumbitePbFe123+O19
7.11.32SenaitePb(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:
Kampf, A.R. (1982): Jeanbandyite, a new member of the stottite group from
Llallagua, Bolivia. Mineralogical Record: 13: 235-239.

American Mineralogist: 68: 471-472.

Mineralogical Magazine: 62: 707-712.

Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016)

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

Welch, M.D. & Kampf, A.R. (2016): Stoichiometric partially-protonated states in hydroxide perovskites: the jeanbandyite enigma revisited. Mineralogical Magazine: 80 (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=12713 (2016).

Internet Links for Jeanbandyite

mindat.org URL:
https://www.mindat.org/min-2084.html
Please feel free to link to this page.
Specimens:
The following Jeanbandyite specimens are currently listed for sale on minfind.com.

Localities for Jeanbandyite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(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)
 
  • Potosí Department
    • Rafael Bustillo Province (Bustillos Province)
      • Llallagua
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
 
  • New Brunswick
    • Charlotte Co.
      • Saint George Parish
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
 
  • Chihuahua
    • Mun. de Aquiles Serdán
      • Santa Eulalia District
        • East Camp
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
        • West Camp
          • Francisco Portillo
Peter Megaw Collection
Namibia
 
  • Otjikoto Region (Oshikoto)
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
 
  • England
    • Cornwall
      • Callington District
        • Calstock
          • Gunnislake
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
      • Liskeard District
        • St Neot
Martin Stolworthy Collection
      • Mount's Bay District
        • St Hilary
[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
Mineral and/or Locality  
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