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Jeanbandyite

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Hingston Down Quarry, Gunnislake Area, Callington District, Cornwall, England, UK
© 2004 JBS

Show Jeanbandyite Photos (10)
Formula:
(Fe
2+
 
,Mn
2+
 
)[Sn
4+
 
(OH)
 
6
]
System:TetragonalColour: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.


Stottite Group.

Classification of Jeanbandyite

IMA status:Approved 1980
Strunz 8th edition ID:4/F.17-30
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:6.3.7.3

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
Hey's CIM Ref.:7.11.9

7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
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Type Occurrence of Jeanbandyite

Type Locality:Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Bustillos Province, Potosí Department, Bolivia
Place of Conservation of Type Material:Los Angeles County Natural History Museum (California)
Year of Discovery:1982
Geological Setting of type material:Telescoped hydrothermal tin mineralization in a highly altered acid igneous stock.
Associated Minerals at type locality:
StanniteStannitePyriteCassiterite

Physical Properties of Jeanbandyite

Colour:brownish orange
Streak:brownish yellow
Hardness (Mohs):3½
Cleavage:Distinct/Good

Crystallography of Jeanbandyite

Crystal System:Tetragonal
Cell Parameters:a = 7.64Å, c = 7.64Å
Ratio:a:c = 1 : 1
Unit Cell Volume:V 445.94 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
3.83 (100)
2.71 (70)

Optical Data of Jeanbandyite

Type:Uniaxial (-)
RI values: nω = 1.837 nε = 1.833
Maximum Birefringence:δ = 0.004

Chart 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:
(Fe
2+
 
,Mn
2+
 
)[Sn
4+
 
(OH)
 
6
]
Essential elements:Fe, H, O, Sn
All elements listed in formula:Fe, H, Mn, O, Sn

Relationship of Jeanbandyite to other Species

Related Minerals - Nickel-Strunz Grouping):
4.FC.05Bernalite
Fe(OH)
 
3
 · nH
 
2
O (n = 0.0 to 0.25)
4.FC.05Dzhalindite
In(OH)
 
3
4.FC.05Söhngeite
Ga(OH)
 
3
4.FC.10Burtite
Ca[Sn(OH)
 
6
]
4.FC.10Mushistonite
(Cu,Zn,Fe
2+
 
)[Sn(OH)
 
6
]
4.FC.10Natanite
Fe
2+
 
[Sn(OH)
 
6
]
4.FC.10Schoenfliesite
Mg[Sn(OH)
 
6
]
4.FC.10Vismirnovite
Zn[Sn(OH)
 
6
]
4.FC.10Wickmanite
Mn
2+
 
[Sn(OH)
 
6
]
4.FC.15Mopungite
Na[Sb
5+
 
(OH)
 
6
]
4.FC.15Stottite
Fe
2+
 
[Ge
4+
 
(OH)
 
6
]
4.FC.15Tetrawickmanite
Mn
2+
 
[Sn
4+
 
(OH)
 
6
]
4.FC.20Ferronigerite-2N1S
Sn(Fe,Mg)Al
 
6
O
 
11
(OH)
4.FC.20Magnesionigerite-6N6S
Sn(Mg,Fe)
 
2
Al
 
8
O
 
15
(OH)
4.FC.20Magnesionigerite-2N1S
Sn(Mg,Fe)Al
 
6
O
 
11
(OH)
4.FC.20Ferronigerite-6N6S
Sn(Fe,Mg)
 
2
Al
 
8
O
 
15
(OH)
4.FC.20Zinconigerite-2N1S
Sn(Zn,Fe,Mg)Al
 
6
O
 
11
(OH)
4.FC.20Zinconigerite-6N6S
4.FC.25Magnesiotaaffeite-6N’3S
(Mg,Fe,Zn)
 
2
Al
 
6
BeO
 
12
4.FC.25Magnesiotaaffeite-2N’2S
Mg
 
3
Al
 
8
BeO
 
16
Related Minerals - Hey's Index Grouping:
7.11.1Romarchite
SnO
7.11.2Cassiterite
SnO
 
2
7.11.4Schoenfliesite
Mg[Sn(OH)
 
6
]
7.11.5Burtite
Ca[Sn(OH)
 
6
]
7.11.6Vismirnovite
Zn[Sn(OH)
 
6
]
7.11.7Wickmanite
Mn
2+
 
[Sn(OH)
 
6
]
7.11.8Tetrawickmanite
Mn
2+
 
[Sn
4+
 
(OH)
 
6
]
7.11.10Natanite
Fe
2+
 
[Sn(OH)
 
6
]
7.11.11Mushistonite
(Cu,Zn,Fe
2+
 
)[Sn(OH)
 
6
]
7.11.12Ferronigerite-2N1S
Sn(Fe,Mg)Al
 
6
O
 
11
(OH)
7.11.13Magnesionigerite
7.11.14Argutite
GeO
 
2
7.11.15Brunogeierite
(Ge,Fe)Fe
 
2
O
 
4
7.11.16Stottite
Fe
2+
 
[Ge
4+
 
(OH)
 
6
]
7.11.17Carboirite
FeAl
 
2
GeO
 
5
(OH)
 
2
7.11.18Otjisumeite
PbGe
 
4
O
 
9
7.11.19Bartelkeite
PbFe
2+
 
Ge
 
3
O
 
8
7.11.20Massicot
PbO
7.11.21Litharge
PbO
7.11.22Minium
Pb
 
3
O
 
4
7.11.23Plattnerite
PbO
 
2
7.11.24Scrutinyite
alpha-PbO
 
2
7.11.25Murdochite
PbCu
 
6
O
 
8-x
(Cl,Br)
 
2x
 x<=0.5
7.11.26Macedonite
PbTiO
 
3
7.11.27Cesàrolite
PbH
 
2
Mn
 
3
O
 
8
7.11.28Coronadite
Pb(Mn,Mn)
 
8
O
 
16
7.11.29Quenselite
PbMnO
 
2
(OH)
7.11.30Plumboferrite
PbFe
 
4
O
 
7
7.11.31Magnetoplumbite
(Pb,Mn)(Fe,Mn)
 
12
O
 
19
7.11.32Senaite
Pb(Ti,Fe,Mn)
 
21
O
 
38

Other Names for Jeanbandyite

Synonyms:
IMA1980-043
German names:
Jeanbandyit
Russian names:
Джинбандиит
Spanish names:
Jeanbandyita

Other Information

Health Warning: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): Mineralogical Record: 13: 235-239.

American Mineralogist: 68: 471-472.

Mineralogical Magazine: 62: 707-712.

Internet Links for Jeanbandyite

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    Localities for Jeanbandyite

    Hide Locality List
    The 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.
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    (TL) indicates type locality. ? 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
     
    • Potosí Department
      • 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]
    UK
     
    • England
      • Cornwall
        • Callington District
          • Gunnislake Area
    		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
        • Mount's Bay District
          • St Hilary
    		[UKJMM 20:7-37]
    Mineral and/or Locality
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