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Zwieselite

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Formula:
(Fe
2+
 
,Mn
2+
 
)
 
2
(PO
 
4
)F
System:MonoclinicColour:Dark brown; black ...
Lustre:Vitreous, ResinousHardness:5 - 5½
Member of:Triplite Group
Name:Named after the town of Zwiesel (Bavaria, Germany).

Classification of Zwieselite

IMA status:Approved
Strunz 8th edition ID:7/B.03-30
Nickel-Strunz 10th (pending) edition ID:8.BB.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
Dana 8th edition ID:41.6.1.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
Hey's CIM Ref.:22.1.25

22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
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Type Occurrence of Zwieselite

Type Locality:Birkhöhe Quarry, Town Centre, Zwiesel, Bavarian Forest, Lower Bavaria, Bavaria, Germany
Year of Discovery:1841

Physical Properties of Zwieselite

Lustre:Vitreous, Resinous
Diaphaneity (Transparency):Translucent
Colour:Dark brown; black (altered)
Streak:White to tan
Hardness (Mohs):5 - 5½

Crystallography of Zwieselite

Crystal System:Monoclinic
Cell Parameters:a = 12.08Å, b = 6.53Å, c = 9.91Å
β = 105.63°
Ratio:a:b:c = 1.85 : 1 : 1.518
Unit Cell Volume:V 752.82 ų (Calculated from Unit Cell)

Optical Data of Zwieselite

Type:Biaxial (+)
RI values: nα = 1.686 nβ = 1.690 nγ = 1.703
2V:Measured: 58° , Calculated: 60°
Maximum Birefringence:δ = 0.017

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

Chemical Properties of Zwieselite

Formula:
(Fe
2+
 
,Mn
2+
 
)
 
2
(PO
 
4
)F
Simplified for copy/paste:(Fe2+,Mn2+)2(PO4)F
Idealised Formula:
Fe
2+
2
(PO
 
4
)F
Essential elements:F, Fe, O, P
All elements listed in formula:F, Fe, Mn, O, P
Common Impurities:Mg,Ca

Relationship of Zwieselite to other Species

Series:Forms a series with Triplite (see here)
Member of:Triplite Group
Other Members of Group:

- +
Triplite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(F,OH)
Related Minerals - Nickel-Strunz Grouping):

- +
8.BB.05Amblygonite
LiAl(PO
 
4
)F
8.BB.05Montebrasite
LiAl(PO
 
4
)(OH)
8.BB.05Tavorite
LiFe
3+
 
(PO
 
4
)(OH)
8.BB.10Triplite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(F,OH)
8.BB.15Sarkinite
Mn
2+
2
(AsO
 
4
)(OH)
8.BB.15Triploidite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(OH)
8.BB.15Wagnerite
(Mg,Fe
2+
 
)
 
2
(PO
 
4
)F
8.BB.15Wolfeite
(Fe
2+
 
,Mn
2+
 
)
 
2
(PO
 
4
)(OH)
8.BB.15Stanĕkite
(Mn
2+
 
,Fe
2+
 
,Mg)Fe
3+
 
(PO
 
4
)O
8.BB.15Joosteite
Mn
2+
 
(Mn
3+
 
,Fe
3+
 
)(PO
 
4
)O
8.BB.15Hydroxylwagnerite
Mg
 
2
(PO
 
4
)(OH)
8.BB.20Holtedahlite
Mg
 
2
(PO
 
4
)(OH)
8.BB.20Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
(PO
 
4
)(OH,O)
8.BB.25Althausite
Mg
 
2
(PO
 
4
)(OH,F)
8.BB.30Adamite
Zn
 
2
(AsO
 
4
)(OH)
8.BB.30Eveite
Mn
2+
2
(AsO
 
4
)(OH)
8.BB.30Libethenite
Cu
 
2
(PO
 
4
)(OH)
8.BB.30Olivenite
Cu
 
2
(AsO
 
4
)(OH)
8.BB.30Zincolibethenite
CuZn(PO
 
4
)(OH)
8.BB.30Zincolivenite
CuZn(AsO
 
4
)(OH)
8.BB.30Auriacusite
Fe
3+
 
Cu
2+
 
(AsO
 
4
)O
8.BB.35Paradamite
Zn
 
2
(AsO
 
4
)(OH)
8.BB.35Tarbuttite
Zn
 
2
(PO
 
4
)(OH)
8.BB.40Barbosalite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Hentschelite
CuFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Lazulite
(Mg,Fe
2+
 
)Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Scorzalite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Wilhelmkleinite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
8.BB.45Trolleite
Al
 
4
(PO
 
4
)
 
3
(OH)
 
3
8.BB.50Namibite
Cu(BiO)
 
2
(VO
 
4
)(OH)
8.BB.55Phosphoellenbergerite
Mg
 
14
(PO
 
4
)
 
6
(HPO
 
4
,CO
 
3
)
 
2
(OH)
 
6
8.BB.60Urusovite
CuAl(AsO
 
4
)O
8.BB.65Theoparacelsite
Cu
 
3
(As
 
2
O
 
7
)(OH)
 
2
8.BB.70Turanite
Cu
 
5
(VO
 
4
)
 
2
(OH)
 
4
8.BB.75Stoiberite
Cu
 
5
(VO
 
4
)
 
2
O
 
2
8.BB.80Fingerite
Cu
 
11
(VO
 
4
)
 
6
O
 
2
8.BB.85Averievite
Cu
 
6
(VO
 
4
)
 
2
O
 
2
Cl
 
2
8.BB.90Lipscombite
(Fe
2+
 
,Mn
2+
 
)Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.90Richellite
CaFe
3+
2
(PO
 
4
)
 
2
(OH,F)
 
2
8.BB.90Zinclipscombite
ZnFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
22.1.1Amblygonite
LiAl(PO
 
4
)F
22.1.2Lacroixite
NaAl(PO
 
4
)F
22.1.3Natrophosphate
Na
 
7
(PO
 
4
)
 
2
F · 19H
 
2
O
22.1.5Nacaphite
Na
 
2
Ca(PO
 
4
)F
22.1.6Arctite
Na
 
2
Ca
 
4
(PO
 
4
)
 
3
F
22.1.7Nefedovite
Na
 
5
Ca
 
4
(PO
 
4
)
 
4
F
22.1.9Fluorapatite
Ca
 
5
(PO
 
4
)
 
3
F
22.1.10Herderite
CaBePO
 
4
(F,OH)
22.1.11Isokite
CaMg(PO
 
4
)F
22.1.12Panasqueiraite
CaMg(PO
 
4
)(OH,F)
22.1.13Babefphite
BaBePO
 
4
(F,OH)
22.1.14Fluellite
Al
 
2
(PO
 
4
)F
 
2
(OH) · 7H
 
2
O
22.1.15Minyulite
KAl
 
2
(PO
 
4
)
 
2
(OH,F) · 4H
 
2
O
22.1.16Morinite
NaCa
 
2
Al
 
2
(PO
 
4
)
 
2
(OH)F
 
4
· 2H
 
2
O
22.1.17Bøggildite
Na
 
2
Sr
 
2
Al
 
2
PO
 
4
F
 
9
22.1.18Fluorstrophite
SrCaSr
 
3
(PO
 
4
)
 
3
F
22.1.19Viitaniemiite
Na(Ca,Mn
2+
 
)Al(PO
 
4
)(F,OH)
 
3
22.1.20Väyrynenite
Mn
2+
 
Be(PO
 
4
)(OH,F)
22.1.21Maxwellite
NaFe
3+
 
(AsO
 
4
)F
22.1.22Wagnerite
(Mg,Fe
2+
 
)
 
2
(PO
 
4
)F
22.1.23Triplite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(F,OH)
22.1.24Magniotriplite
(Mg,Fe
2+
 
,Mn
2+
 
)
 
2
PO
 
4
F
22.1.26Mcauslanite
HFe
2+
3
Al
 
2
(PO
 
4
)
 
4
F · 18H
 
2
O
22.1.27Richellite
CaFe
3+
2
(PO
 
4
)
 
2
(OH,F)
 
2
22.1.28Svabite
Ca
 
5
(AsO
 
4
)
 
3
F
22.1.29Tilasite
CaMg(AsO
 
4
)F
22.1.30Johnbaumite-M
Ca
 
5
(AsO
 
4
)
 
3
OH
22.1.31Durangite
NaAl(AsO
 
4
)F

Other Names for Zwieselite

Synonyms:
Zwiselite
Other Languages:
German:Zwieselit
Russian:Цвизелит
Spanish:Zwieselita

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 Zwieselite

Reference List:

- +
Breithaupt, A. (1841) Vollständige Handbuch der Mineralogie. Vol. 2: 299 (as Zwiselite).

Glocker, E.F. (1847) Generum et specierum mineralium secundum ordines naturales digestorum synopsis. Halle: 244.

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. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 849.

Mineralogical Magazine (1957): 31: 587.

Acta Univ. Carol., Geol., Prague (1964): 97.

Internet Links for Zwieselite

Search Engines:
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  • Look for Zwieselite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Zwieselite details from Handbook of Mineralogy (PDF)
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  • Localities for Zwieselite

    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.
    (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.
    Argentina
     
    • Córdoba
      • San Alberto Department
        • Pampa de Achala
    Milka K. de Brodtkorb (2006) Las Especies Minerales de la Republica Argentina, Vol. 2, p 428 (Asociación Mineralógica Argentina)
    Australia
     
    • New South Wales
      • Yancowinna Co.
        • Broken Hill District
    • South Australia
      • Olary Province
        • Bimbowrie Station
        • Boolcoomatta Reserve (Boolcoomata Station; Boolcoomatta)
    Lottermoser, B.G., and Lu, J. (1997): Mineralogy and Petrology 59, 1-19.
    • Victoria
      • Loddon Shire
        • Pyramid Hill
    W. Birch 1996 AJM 2(2)
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Horní Slavkov (Schlaggenwald)
          • Krásno (Schönfeld)
    Petr Pauliš (2000): Nejzajímavější mineralogická naleziště Čech, Kuttna, Kutná Hora; Sejkora, J., Škoda, R., Ondruš, P., Beran, P. & Susser, C. (2006): Mineralogy of phosphate accumulations in the Huber stock, Krásno ore district, Slavkovský les area, Czech Republic. Journal of the Czech Geological Society 51, 103-147.
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Velké Meziříčí
    Škoda, R., Staněk, J., Čopjaková, R.: Minerální asociace fosfátových nodulí z granitického pegmatitu od Cyrilova u Velkého Meziříčí, Moldanubikum; část 1 – primární a exsoluční fáze. Acta Mus. Moraviae, Sci. geol., 2007, 92, 59-74.
        • Žďár nad Sázavou
    Staněk, J.: Parageneze minerálů pegmatitových žil z Hatí u Dolních Borů na západní Moravě. Acta Mus. Moraviae, Sci. nat., vol. 76, pages 19-49.
    Finland
     
    • Southwestern Finland Region
      • Kemiö Island (Kimito Island)
    Pertti Hyvärinen collection;
    France
     
    • Limousin
      • Haute-Vienne
        • Bessines-sur-Gartempe
    http://perso.wanadoo.fr/jeldemine/listes%20mineraux.html
    Le Règne Minéral, Hors Série IV, 1998
        • Razès
          • Chanteloube
            • Vilatte Quarries (La Vilate)
    Le Règne Minéral, Hors Série IV, 1998
    http://perso.wanadoo.fr/jeldemine/listes%20mineraux.html
        • Saint-Sylvestre
    Le Règne Minéral, Hors Série IV, 1998
    Germany
     
    • Bavaria
      • Lower Bavaria
        • Bavarian Forest
          • Arnbruck
            • Drachselsried
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
          • Lam
            • Lohberghütte
    S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
          • Waldkirchen
            • Röhrnbach
    Habel, M. (2009): Der Granodioritbruch der Fa. Josef Uhrmann OHG, Steinerleinbach bei Röhrnbach. Mineralien-Welt 20 (2), 66-86.
          • Zwiesel
            • Bodenmais
              • Auerkiel
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
            • Rabenstein
    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: 851; Nickel & Nichols, 1991 "Mineral Reference Manual", 238.
            • Town Centre
    Min Mag 31 (1957), 587; Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Obermüller, T., (1993): Über Phosphatmineralien aus Zwiesel/Bayerischer Wald, Der Aufschluss, Vol. 44, pp. 337-341
      • Upper Palatinate
        • Oberpfälzer Wald
          • Plößberg
    Weiss: "Mineralfundstellen, Deutschland West", 1990
          • Tirschenreuth
            • Marchaney
    Weiss: "Mineralfundstellen, Deutschland West", 1990
          • Vohenstrauß
            • Pleystein
    Dill, H.G., Weber, B. (2009), Pleystein-City on Pegmatite, 4th International Symposium on Granitic Pegmatites, Recife, Brazil.
            • Waidhaus
              • Hagendorf
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990; Dill H.G.: "Mineralogical and chemical composition of the Hagendorf-North Pegmatite, SE Germany - a monographic study", J. Min. Geochem, 2013
    http://www.berthold-weber.de/h_miner.htm
          • Waldmünchen
            • Althütte
    Lapis, 10 (4), 13-17.
    • Saxony
      • Erzgebirge
        • Ehrenfriedersdorf
    Thomas, R., and Webster, J.D. (2000): Mineralium Deposita 35, 570-582.
        • Schmiedeberg
    Frank Zschäbitz, Walter Hajek, Roland Stenzel (2011): Neufunde von Kolbeckit, Hübnerit und Roscherit aus Sadisdorf, Sachsen. Lapis, 36 (7-8), 37-39.
    Namibia
     
    • Erongo Region
      • Karibib District
        • Okatjimukuju Farm 55 (Friedrichsfelde Farm)
    P. Keller and O. von Knorring, Eur. J. Mineral. , 1989, 1, pp. 567-593.
        • Tsaobismund Farm 85
    Contrib Mineral Petrol (1986) 92:502-517
    Portugal
     
    • Guarda District
      • Gouveia
        • Folgosinho
    Keck, E., Witzke, T., Pöllmann, H. & Friese, K. (1998): Benyacarit aus ostbayerischen und portugiesischen Pegmatiten. Aufschluss 49, 281-285.
      • Sabugal
        • Bendada
    Schnorrer-Köhler (1991), Mineral Occurrences.
    • Viseu District
      • Sátão
        • Ferreira de Aves
          • Aldeia Nova
    Sweden
     
    • Södermanland
      • Norrö
    Smeds, S-A., Uher, P., Cerny, P., Wise, M.A., Gustafsson, L. & Penner, P. (1998): Graftonite-beusite in Sweden: primary phases, products of exsolution, and distribution in zoned populations of granitic pegmatites. Canadian Mineralogist. 36, 377-394.
      • Stockholm
    Smeds, S-A., Uher, P., Cerny, P., Wise, M.A., Gustafsson, L. & Penner, P. (1998): Graftonite-beusite in Sweden: primary phases, products of exsolution, and distribution in zoned populations of granitic pegmatites. Canadian Mineralogist. 36, 377-394.
    UK
     
    • England
      • Cornwall
        • Mount's Bay District
          • Breage
    No reference listed
    USA
     
    • Colorado
      • Larimer Co.
        • Crystal Mountain Pegmatite District (Storm Mountain District)
          • Storm Mountain
    Minerals of Colorado (1997) E.B. Eckels
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