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Wiserite

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Gonzen Mine, Sargans, Alvier Group, St Gallen, Switzerland
© Sandro Maggia

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Formula:
(Mn,Mg)
 
14
[Cl|(OH)
 
8
|(Si,Mg)(O,OH)
 
4
|(B
 
2
O
 
5
)
 
4
]
System:TetragonalColour:Yellowish white, ...
Hardness:2½
Name:Named by Haidinger in 1845 for David Friedrich Wiser (1802-1878), Swiss mineralogical chemist, who had discovered the mineral in 1842.
This page provides mineralogical data about Wiserite.

Classification of Wiserite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/H.03-10
Nickel-Strunz 10th (pending) edition ID:6.BA.20

6 : BORATES
B : Diborates
A : Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.
Dana 8th edition ID:27.1.10.1

27 : COMPOUND BORATES
1 : Miscellaneous
Hey's CIM Ref.:9.7.5

9 : Borates
7 : Borates of Mn
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Type Occurrence of Wiserite

Type Locality:Gonzen Mine, Sargans, Alvier Group, St Gallen, Switzerland
General Appearance of Type Material:Fibrous masses, intimately intergrown with sussexite
Year of Discovery:1842
Geological Setting of type material:In veins of rhodochrosite-hausmannite ore
Associated Minerals at type locality:
SussexiteRhodochrositePyrochroiteHausmanniteFluorite
Baryte

Physical Properties of Wiserite

Lustre:Silky
Colour:Yellowish white, pink-brown, light red
Hardness (Mohs):2½
Density (calculated):3.42 g/cm3

Crystallography of Wiserite

Crystal System:Tetragonal
Cell Parameters:a = 20.19Å, c = 2.81Å
Ratio:a:c = 1 : 0.139
Unit Cell Volume:V 1,145.46 ų (Calculated from Unit Cell)
Morphology:Fibrous, asbestiform masses

Optical Data of Wiserite

Type:Uniaxial (-)
RI values: nω = 1.751 - 1.760 nε = 1.700 - 1.717
Maximum Birefringence:δ = 0.051

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Wiserite

Formula:
(Mn,Mg)
 
14
[Cl|(OH)
 
8
|(Si,Mg)(O,OH)
 
4
|(B
 
2
O
 
5
)
 
4
]
Essential elements:B, Cl, H, Mn, O, Si
All elements listed in formula:B, Cl, H, Mg, Mn, O, Si
Common Impurities:Fe,Ca,H2O

Relationship of Wiserite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.BA.05Suanite
Mg
 
2
[B
 
2
O
 
5
]
6.BA.10Clinokurchatovite
Ca(Mg,Fe
2+
 
,Mn
2+
 
)[B
 
2
O
 
5
]
6.BA.10Kurchatovite
Ca(Mg,Mn
2+
 
)[B
 
2
O
 
5
]
6.BA.15Sussexite
(Mn
2+
 
,Mg)
 
2
[(OH)(B
 
2
O
 
4
(OH))]
6.BA.15Szaibélyite
Mg
 
2
[(OH)(B
 
2
O
 
4
(OH))]
Related Minerals - Hey's Index Grouping:

- +
9.7.1Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
9.7.2Orthopinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
9.7.3Jimboite
(Mn
2+
 
,Mg)
 
3
[BO
 
3
]
 
2
9.7.4Sussexite
(Mn
2+
 
,Mg)
 
2
[(OH)(B
 
2
O
 
4
(OH))]
9.7.6Kurchatovite
Ca(Mg,Mn
2+
 
)[B
 
2
O
 
5
]
9.7.7Clinokurchatovite
Ca(Mg,Fe
2+
 
,Mn
2+
 
)[B
 
2
O
 
5
]
9.7.8Takéuchiite
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
9.7.9Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
9.7.10Tusionite
Mn
2+
 
Sn
4+
 
[BO
 
3
]
 
2

Other Names for Wiserite

Other Languages:
German:Wiserit
Russian:Визерит
Spanish:Wiserita

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 Wiserite

Reference List:

- +
Haidinger, Wm. (1845a) Handbuch der bestimmenden Mineralogie. Vienna: 493.

Epprecht (1946) Beitr. Geol. Schweiz., Geotecn. Ser. Lief.: 24.

Epprecht (1946) Schweizerische mineralogische und petrographische Mitteilungen, Frauenfeld: 26: 19.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 245.

American Mineralogist (1960): 45: 258.

Dunn, P. J., Francis, C. A., Ramik, R. A., Nelen, J. A. and Innes, J. (1989): Wiserite, an occurrence at the Kombat mine in Namibia, and new data. American Mineralogist: 74: 1374-1376.

European Journal of Mineralogy (1997): 9: 228.

Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 430

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Wiserite

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    • Localities for Wiserite

    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.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Gunma Prefecture
          • Kiryuu City
        • Saitama Prefecture
          • Chichibu City
            • Urayama
    		K. Nishikubo, T. Yamada, A. Harada, M. Takizawa, K. Tange, Y. Kosuge, R. Miyawaki, and S. Matsubara (2005) "Rambergite from the Hirogawara mine, Urayama, Chichibu City, Saitama Prefecture, Japan"
        • Tochigi Prefecture
    		Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
          • Kanuma City
    		Akira Kato (undated manuscript): Country rock and Minerals of the Kaso mine, Kanuma City, Tochigi Prefecture. (in japanese)
      • Kinki region
        • Shiga prefecture
          • Tsuchiyama
    		Am Min 74: pp 1374-1376
    Namibia
     
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    		Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425. American Mineralogist: 74: 1374-1376.
    Switzerland
     
    • St Gallen
      • Alvier Group
        • Sargans
    		Haidinger, W. (1845) : Handb. bestimm. Min.: 493; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 245.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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