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Burtite

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Formula:
Ca[Sn(OH)
 
6
]
System:IsometricColour:colorless, pale yellow
Hardness:3
Member of:Schoenfliesite Group
Name:Named after Dr. Donald McLain Burt (1943– ), Professor of Mineralogy, Arizona State University, Tempe, Arizona, USA, authority on mineral equilibria in skarn and greisen deposits, who had predicted the natural occurrence of the compound.


Schoenfliesite Group.

Classification of Burtite

IMA status:Approved 1980
Strunz 8th edition ID:4/F.16-20
Nickel-Strunz 10th (pending) edition ID:4.FC.10

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:6.3.6.5

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
Hey's CIM Ref.:7.11.5

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

Type Locality:Beht River, El Hammam (El Hamman), Meknès, Meknès Prefecture, Meknès-Tafilalet Region, Morocco
Year of Discovery:1980
Associated Minerals at type locality:
PectoliteGarnet

Physical Properties of Burtite

Colour:colorless, pale yellow
Hardness (Mohs):3

Crystallography of Burtite

Crystal System:Isometric
Cell Parameters:a = 8.12Å
Unit Cell Volume:V 535.39 ų (Calculated from Unit Cell)

Optical Data of Burtite

Type:Isotropic (+/-)
RI values: nα = 1.630 nβ = 1.633
Maximum Birefringence:δ = 1.630 - Isotropic minerals have no birefringence
Surface Relief:Moderate

Chemical Properties of Burtite

Formula:
Ca[Sn(OH)
 
6
]
Essential elements:Ca, H, O, Sn
All elements listed in formula:Ca, H, O, Sn

Relationship of Burtite to other Species

Member of:Schoenfliesite Group
Other Members of Group:

- +
Mushistonite
(Cu,Zn,Fe
2+
 
)[Sn(OH)
 
6
]
Natanite
Fe
2+
 
[Sn(OH)
 
6
]
Schoenfliesite
Mg[Sn(OH)
 
6
]
Vismirnovite
Zn[Sn(OH)
 
6
]
Wickmanite
Mn
2+
 
[Sn(OH)
 
6
]
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.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.15Jeanbandyite
(Fe
2+
 
,Mn
2+
 
)[Sn
4+
 
(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
 
2
BeAl
 
6
O
 
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
]
7.11.6Vismirnovite
Zn[Sn(OH)
 
6
]
7.11.7Wickmanite
Mn
2+
 
[Sn(OH)
 
6
]
7.11.8Tetrawickmanite
Mn
2+
 
[Sn
4+
 
(OH)
 
6
]
7.11.9Jeanbandyite
(Fe
2+
 
,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
Fe
2+
2
Ge
4+
 
O
 
4
7.11.16Stottite
Fe
2+
 
[Ge
4+
 
(OH)
 
6
]
7.11.17Carboirite
FeAl
 
2
(GeO
 
4
)O(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
 where x<=0.5
7.11.26Macedonite
PbTiO
 
3
7.11.27Cesàrolite
Pb(Mn
4+
 
)
 
3
O
 
6
(OH)
 
2
7.11.28Coronadite
Pb(Mn
4+
 
,Mn
3+
 
)
 
8
O
 
16
7.11.29Quenselite
PbMnO
 
2
(OH)
7.11.30Plumboferrite
Pb
 
2
Fe
3+
11-x
Mn
2+
x
O
 
19-2x
, x = 1/3
7.11.31Magnetoplumbite
(Pb,Mn)(Fe,Mn)
 
12
O
 
19
7.11.32Senaite
Pb(Ti,Fe,Mn)
 
21
O
 
38

Other Names for Burtite

Synonyms:
IMA1980-078
Other Languages:
German:Burtit
Russian:Буртит
Simplified Chinese:羟锡钙石
Spanish:Burtita

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 Burtite

Reference List:

- +
Sonnet, P. M. (1981): Burtite, calcium hexahydroxostannate, a new mineral from El Hamman, central Morocco. Canadian Mineralogist, 19, 397-401.

American Mineralogist: 67: 854.

Internet Links for Burtite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Burtite details from Handbook of Mineralogy (PDF)
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    • Localities for Burtite

    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.
    Hide Locality List
    (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.
    Morocco
     
    • Meknès-Tafilalet Region
      • Meknès Prefecture
        • Meknès
          • El Hammam (El Hamman)
    		Ph. M. Sonnet : "Burtite, Calcium Hexahydrostannate, a New Mineral from El Hamman, Central Morocco", Canadian Mineralogist, Vol. 19, 1981, pp. 397-401.
    Econ Geol (1989) 84:575-590
    Russia
     
    • Far-Eastern Region
      • Primorskiy Kray
        • Kavalerovo Mining District
          • Karadubsky ore field
    		N.V., Gorelikova analytical data
    Mineral and/or Locality
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