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Langbeinite

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Formula:
K
 
2
Mg
 
2
(SO
 
4
)
 
3
System:IsometricColour:Colorless, white, pale ...
Hardness:3½ - 4
Member of:Langbeinite Group
Name:After A. Langbein of Leopoldshall, Germany.


Piezoelectric.

Classification of Langbeinite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/A.03-10
Nickel-Strunz 10th (pending) edition ID:7.AC.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
C : With medium-sized and large cations
Dana 8th edition ID:28.4.4.1

28 : ANHYDROUS ACID AND NORMAL SULFATES
4 : Miscellaneous
Hey's CIM Ref.:25.3.13

25 : Sulphates
3 : Sulphates of Mg
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Type Occurrence of Langbeinite

Type Locality:Wilhelmshall, Halberstadt, Saxony-Anhalt, Germany
Year of Discovery:1891

Occurrences of Langbeinite

Geological Setting:Salt deposits.

Physical Properties of Langbeinite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colorless, white, pale tinges; colourless in transmitted light
Hardness (Mohs):3½ - 4
Tenacity:Brittle
Cleavage:None Observed
Fracture:Conchoidal
Density (measured):2.83 g/cm3
Density (calculated):2.77 g/cm3

Crystallography of Langbeinite

Crystal System:Isometric
Class (H-M):2 3 - Tetartoidal
Space Group:P21 3
Cell Parameters:a = 9.92Å
Unit Cell Volume:V 976.19 ų (Calculated from Unit Cell)
Z:4
Morphology:Crystals rare. Usually disseminated grains, nodular or massive aggregates.

Optical Data of Langbeinite

Type:Isotropic

Chemical Properties of Langbeinite

Formula:
K
 
2
Mg
 
2
(SO
 
4
)
 
3
Simplified for copy/paste:K2Mg2(SO4)3
Essential elements:K, Mg, O, S
All elements listed in formula:K, Mg, O, S
Analytical Data:Slowly water soluble.

Relationship of Langbeinite to other Species

Member of:Langbeinite Group
Other Members of Group:

- +
Calciolangbeinite
K
 
2
Ca
 
2
(SO
 
4
)
 
3
Efremovite
(NH
 
4
)
 
2
Mg
 
2
(SO
 
4
)
 
3
Manganolangbeinite
K
 
2
Mn
 
2
(SO
 
4
)
 
3
Related Minerals - Nickel-Strunz Grouping):

- +
7.AC.05Vanthoffite
Na
 
6
Mg(SO
 
4
)
 
4
7.AC.08Pyracmonite
(NH
 
4
)
 
3
Fe(SO
 
4
)
 
3
7.AC.10Efremovite
(NH
 
4
)
 
2
Mg
 
2
(SO
 
4
)
 
3
7.AC.10Manganolangbeinite
K
 
2
Mn
 
2
(SO
 
4
)
 
3
7.AC.15Yavapaiite
KFe(SO
 
4
)
 
2
7.AC.15Eldfellite
NaFe
3+
 
(SO
 
4
)
 
2
7.AC.20Godovikovite
(NH
 
4
)Al(SO
 
4
)
 
2
7.AC.20Sabieite
(NH
 
4
)Fe
3+
 
(SO
 
4
)
 
2
7.AC.25Thenardite
Na
 
2
SO
 
4
7.AC.30Metathenardite
Na
 
2
SO
 
4
7.AC.35Aphthitalite
(K,Na)
 
3
Na(SO
 
4
)
 
2
Related Minerals - Hey's Index Grouping:

- +
25.3.1Kieserite
MgSO
 
4
· H
 
2
O
25.3.2Sanderite
MgSO
 
4
· 2H
 
2
O
25.3.3Starkeyite
MgSO
 
4
· 4H
 
2
O
25.3.4Pentahydrite
MgSO
 
4
· 5H
 
2
O
25.3.5Hexahydrite
MgSO
 
4
· 6H
 
2
O
25.3.6Epsomite
MgSO
 
4
· 7H
 
2
O
25.3.7Caminite
Mg
 
7
(SO
 
4
)
 
5
(OH)
 
4
· H
 
2
O
25.3.8Vanthoffite
Na
 
6
Mg(SO
 
4
)
 
4
25.3.9Blödite
Na
 
2
Mg(SO
 
4
)
 
2
· 4H
 
2
O
25.3.10Konyaite
Na
 
2
Mg(SO
 
4
)
 
2
· 5H
 
2
O
25.3.11Löweite
Na
 
12
Mg
 
7
(SO
 
4
)
 
13
· 15H
 
2
O
25.3.12Uklonskovite
NaMg(SO
 
4
)F · 2H
 
2
O
25.3.14Leonite
K
 
2
Mg(SO
 
4
)
 
2
· 4H
 
2
O
25.3.15Picromerite
K
 
2
Mg(SO
 
4
)
 
2
· 6H
 
2
O
25.3.16Efremovite
(NH
 
4
)
 
2
Mg
 
2
(SO
 
4
)
 
3
25.3.17Boussingaultite
(NH
 
4
)
 
2
Mg(SO
 
4
)
 
2
· 6H
 
2
O
25.3.18Pickeringite
MgAl
 
2
(SO
 
4
)
 
4
· 22H
 
2
O

Other Names for Langbeinite

Other Languages:
German:Langbeinit
Russian:Лангбейнит
Simplified Chinese:无水钾镁矾
Spanish:Langbeinita

Other Information

Thermal Behaviour:Melting Point = 930°.
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 Langbeinite

Reference List:

- +
Zuckschwerdt (1891) Zeitschrift für anorganische und allgemeine Chemie, Hamburg, Leipzig: 356.

Luedecke (1898) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 29: 255.

Sachs (1902) Sitzungsberichte der
Akademie der Wissenschaften, Berlin: 376.

Nacken (1907) Gesellschaft der Wissenschaften zu Göttingen, Nachr.: 602.

Görgey (1909) Mineralogische und petrographische Mitteilungen, Vienna: 28: 334.

Gossner and Koch (1931) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 80: 455.

Ramsdell (1935) American Mineralogist: 20: 569.

Bond (1943) Bell Systems technology Journal: 22: 145.

Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 434-435.

Neues Jahrbuch für Mineralogie, Monatshefte (1979): 182-188.

Internet Links for Langbeinite

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  • Raman and XRD data at RRUFF project
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  • Langbeinite details from Handbook of Mineralogy (PDF)
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  • Localities for Langbeinite

    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.
    Austria
     
    • Styria
      • Bad Aussee
        • Altaussee
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Tyrol
      • North Tyrol
        • Inn valley
          • Innsbruck
            • Hall
              • Hall valley
    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: 434; R. Exel (1993): Die Mineralien und Erzlagerstätten Österreichs.
    • Upper Austria
      • Gmunden
        • Bad Ischl
          • Perneck
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
        • Hallstatt
    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: 434; R. Exel (1993): Die Mineralien und Erzlagerstätten Österreichs.
    China
     
    • Qinghai Province
      • Haixi Autonomous Prefecture
        • Dulan Co.
    Anthony, J.W. et al.: Handbook of Mineralogy
    • Shandong Province
      • Tai'an Prefecture
        • Daiyue District
          • Dawenkou depression
    Dejun Zhao, Weitian Han, Keqin Cai, and Jianhua Gao (1987): Earth Science, Journal of China University of Geosciences 31(4)
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
    Zacek, V., Oplustil, S., Mayova, A. & Meyer, F. R. (1995): Die Mineralien von Kladno in Mittelböhmen, Tschechische Republik. Mineralien-Welt 6 (1), 13-30 (in German).
      • Hradec Králové Region
        • Trutnov (Trautenau)
          • Radvanice
    Sejkora, J., Kotrlý, M.: Sulfáty vysokoteplotní oxidační minerální asociace; hořící odval dolu Kateřina v Radvanicích v Čechách. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2001, roč. 9, s. 261-267.
    France
     
    • Nord-Pas-de-Calais
      • Pas-de-Calais
    Naze-Nancy Masalehdani, M., Mees, F., Dubois, M., Coquinot, Y., Potdevin, J.-L., Fialin, M. & Blanc-Valleron, M.-M. (2009): Condensate minerals from a burning coal-waste heap in Avion, Northern France. Can. Mineral. 47, 573-591.
    Germany
     
    • Hesse
      • Fulda
        • Neuhof
          • Giesel
    S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Krah, O., (1988): Beobachtungen beim Durchbruch eines Basaltganges durch das Kalilager vom Werk Neuhof-Ellers, Der Aufschluss Vol. 39 (2), 103-113
      • Werra valley
        • Heringen
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
        • Phillippsthal
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Lower Saxony
      • Celle
        • Hänigsen
    Bode "Mineralien und Fundstellen BRD" from 1989 ISBN 3-925094-24-5 Pg.9
        • Wathlingen
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Hanover
        • Lehrte
    Weiss: "Mineralienfundstellen, Deutschland West", Weise (Munich), 1990
    • Saxony-Anhalt
      • Halberstadt
    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: 434.
      • Stassfurt Potash Deposit
        • Bernburg
    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: 434; Naumann, Zirkel (1898) "Elemente der Mineralogie", 13th Ed.
        • Stassfurt
    Dana 6:A3:14,43,46; 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: 430, 447; Zr. Kr. (1911): 50: 139.
    • Thuringia
      • Gera
        • Ronneburg U deposit
    T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
      • Thuringian Forest
        • Merkers-Kieselbach
    W.I. Borrisenkow (1968) Zeitschr. für angewandte Geologie 14, 7-10
        • Unterbreizbach
    A.Dietrich, G.Behnke and T.Thonelt (2004): Kristalle aus der Tiefe - Eine Auswahl von Mineralen aus Kali- und Steinsalzlagerstatten. Kali und Steinsalz:3.p.6-14.
    Kazakhstan
     
    • Atyrau Province (Atyrau Oblysy; Atyrau Oblast')
      • Atyrau (Gur'yev)
    Pekov, I. V. & Abramov, D. V. (1993): Boron deposit of the Inder and its minerals. World of Stones, 1, 23-30.
    Pakistan
     
    • Punjab
      • Salt Range
    Dana 6: 899; 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: 432, 434, & 449.
    Poland
     
    • Wielkopolskie
    Jirásek, J.: Solný důl Kłodawa (Polsko). Minerál, 2004, roč. 12, č. 2, s. 98-102. ISSN 1213-0710 (excerpted from unpublished thesis Hanczke, T.: Mineralogia i petrografia soli czechstyńskich kopalni "Kłodawa". Doktroská práce, Uniwersytet Jagiellonski, Instytut nauk geologicznych, 1967.)
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
        • Tolbachik volcano
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
            • Northern Breakthrough (North Breach)
              • Second scoria cone
    N. V. Chukanov, M. N. Murashko, A. E. Zadov & A. F. Bushmakin (2006): Avdoninite, K2Cu5Cl8(OH)4• H2O, a new mineral from volcanic exhalations and from the zone of technogenesis at massive sulphide ore deposits. Proceedings of the Russian Mineralogical Society 135(3), 38–42; Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu.S. & Pushcharovsky, D.Yu. (2012): Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy, 24, 749-757.; Pekov, I. V., Zelenski, M. E., Zubkova, N. V., Yapaskurt, V. O., Chukanov, N. V., Belakovskiy, D. I., & Pushcharovsky, D. Y. (2012). Calciolangbeinite, K2Ca2 (SO4) 3, a new mineral from the Tolbachik volcano, Kamchatka, Russia. Mineralogical Magazine, 76(3), 673-682.
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
    Chesnokov, B.V., L.F. Bazhenova, E.P. Shcherbakova, T.A. Michal, T.N. Deriabina (1988), New minerals from the burned dumps of the Chelyabinsk coal basin, in Mineralogy, technogenesis, and mineral-resource complexes of the Urals. Akad. Nauk SSSR-Uralskoe Otdel.: 5-31 (in Russian).; Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
    Tajikistan
     
    • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
      • Gissar Range
    PXRD
    Ukraine
     
    • L'viv Oblast' (Lviv Oblast'; Lwiw Oblast')
      • Drohobych
    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: 434.
    USA
     
    • New Mexico
      • Eddy and Lea Counties
    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: 595.
      • Eddy Co.
    Northrop, Minerals of New Mexico, 2nd. rev. ed. (1959)
        • Carlsbad Potash District
    SIMMONS, P.S. (2013)The Carlsbad Potash Basin, Carlsbad, New Mexico. Mineralogical Record, 44 (1), 13-49.
    NMBMMR Bull 87 Mineral and Water Resources of New Mexico
    NMBMMR Bull 87 Mineral and Water Resources of New Mexico
    Van King
    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: 435; Minerals of New Mexico 3rd ed.
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