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Jeanbandyite

A valid IMA mineral species
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About JeanbandyiteHide

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:
Specific Gravity:
3.81
Crystal System:
Tetragonal
Name:
Honouring Mrs. Jean A. Bandy (1900-1991), of Wickenburg, Arizona, USA, who donated to the Los Angeles Natural History Museum the collection on one of whose specimens this new mineral was discovered. The mineral bandylite was named for her husband.
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).


Unique IdentifiersHide

Mindat ID:
2084
Long-form identifier:
mindat:1:1:2084:4
GUID
(UUID V4):
f532f4fb-d5ed-4e7b-8920-d9c66afab76b

IMA Classification of JeanbandyiteHide

Approved
IMA Formula:
Fe3+Sn(OH)5O
Approval year:
1980

Classification of JeanbandyiteHide

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
JbdIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of JeanbandyiteHide

Colour:
brownish orange
Streak:
brownish yellow
Hardness:
3½ on Mohs scale
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 JeanbandyiteHide

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

Chemistry of JeanbandyiteHide

Mindat 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
Common Impurities:
Mn,(Mg,Si)

Crystallography of JeanbandyiteHide

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

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0013052JeanbandyiteMorgenstern-Badarau I, Michel A (1976) Sur l'existence d'un oxyhydroxyde double de fer(III) et d'etain(IV) Journal of Inorganic and Nuclear Chemistry 38 1400-14021976synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.83 Å(100)
2.71 Å(70)
1.71 Å(60)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]

Type Occurrence of JeanbandyiteHide

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 JeanbandyiteHide

Other Language Names for JeanbandyiteHide

Relationship of Jeanbandyite to other SpeciesHide

Other Members of this group:
BurtiteCa[Sn(OH)6]Hex.
Mushistonite(Cu,Zn,Fe2+)[Sn(OH)6]Iso. m3m (4/m 3 2/m) : Pn3m
NataniteFe2+[Sn(OH)6]Iso. m3m (4/m 3 2/m) : Pn3m
SchoenfliesiteMg[Sn(OH)6]Iso. m3 (2/m 3) : Pn3
VismirnoviteZn[Sn(OH)6]Iso. m3m (4/m 3 2/m) : Pn3m
WickmaniteMn2+[Sn(OH)6]Iso. m3 (2/m 3) : Pn3

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Jeanbandyite associated with StanniteCu2FeSnS4
7 photos of Jeanbandyite associated with ChalcociteCu2S
7 photos of Jeanbandyite associated with FluoriteCaF2
7 photos of Jeanbandyite associated with DzhalinditeIn(OH)3
3 photos of Jeanbandyite associated with CrandalliteCaAl3(PO4)(PO3OH)(OH)6
3 photos of Jeanbandyite associated with WickmaniteMn2+[Sn(OH)6]
3 photos of Jeanbandyite associated with PyriteFeS2
2 photos of Jeanbandyite associated with ArsenopyriteFeAsS
2 photos of Jeanbandyite associated with ChalcopyriteCuFeS2
2 photos of Jeanbandyite associated with Wolframite Group

Related Minerals - Strunz-mindat GroupingHide

4.FC.05BernaliteFe(OH)3 · nH2O (n = 0.0 to 0.25)Orth. mmm (2/m 2/m 2/m) : Pmmn
4.FC.05DzhalinditeIn(OH)3Iso. m3 (2/m 3) : Im3
4.FC.05SöhngeiteGa(OH)3Tet.
4.FC.10BurtiteCa[Sn(OH)6]Hex.
4.FC.10Mushistonite(Cu,Zn,Fe2+)[Sn(OH)6]Iso. m3m (4/m 3 2/m) : Pn3m
4.FC.10NataniteFe2+[Sn(OH)6]Iso. m3m (4/m 3 2/m) : Pn3m
4.FC.10SchoenfliesiteMg[Sn(OH)6]Iso. m3 (2/m 3) : Pn3
4.FC.10VismirnoviteZn[Sn(OH)6]Iso. m3m (4/m 3 2/m) : Pn3m
4.FC.10WickmaniteMn2+[Sn(OH)6]Iso. m3 (2/m 3) : Pn3
4.FC.15MopungiteNa[Sb5+(OH)6]Tet. 4/m : P42/n
4.FC.15StottiteFe2+[Ge4+(OH)6]Tet. 4/m : P42/n
4.FC.15TetrawickmaniteMn2+[Sn4+(OH)6]Tet. 4/m : P42/n
4.FC.20Ferronigerite-2N1S(Al,Fe,Zn)2(Al,Sn)6O11(OH)Trig. 3m (3 2/m) : P3m1
4.FC.20Magnesionigerite-6N6S(Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH)Trig. 3m (3 2/m) : R3m
4.FC.20Magnesionigerite-2N1S(Mg,Al,Zn)2(Al,Sn)6O11(OH)Trig. 3m (3 2/m) : P3m1
4.FC.20Ferronigerite-6N6S(Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH)Trig. 3m (3 2/m) : R3m
4.FC.20Zinconigerite-2N1S(Zn,Al,Mg)2(Al,Sn)6O11(OH)Trig. 3m (3 2/m) : P3m1
4.FC.20Zinconigerite-6N6SZn3Sn2Al16O30(OH)2Trig. 3m (3 2/m) : R3m
4.FC.25Magnesiotaaffeite-6N’3SMg2BeAl6O12Trig. 3m (3 2/m) : R3m
4.FC.25Magnesiotaaffeite-2N’2SMg3Al8BeO16Hex. 6/mmm (6/m 2/m 2/m)
4.FC.25Ferrotaaffeite-2N’2SBe(Fe,Mg,Zn)3Al8O16 Hex. 6mm : P63mc

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for JeanbandyiteHide

References for JeanbandyiteHide

Localities for JeanbandyiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Bolivia (TL)
 
  • Potosí
    • Rafael Bustillo Province
      • Llallagua
Kampf (1982) +1 other reference
Canada
 
  • New Brunswick
    • Charlotte Co.
      • Saint George Parish
M.E. Ciriotti collection 03.09.2010 (ex Cooke collection) +1 other reference
Mexico
 
  • Chihuahua
    • Aquiles Serdán Municipality
      • Santa Eulalia Mining District
        • East Camp
Megaw
        • West Camp
          • Francisco Portillo
Megaw (2023)
Namibia
 
  • Oshikoto Region
Geier et al. (1970) +1 other reference
EDS and Raman analyzed by Joy Desor.
UK
 
  • England
    • Cornwall
      • Calstock
        • Gunnislake
Betterton J et al. (1998) +1 other reference
      • Perranuthnoe
Specimens collected by David Moulding ...
      • St Hilary
[[1]] Betterton et al. (1998) +1 other reference
      • St Neot
Martin Stolworthy Collection
 
Mineral and/or Locality  
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