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Landesite

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Big Photo

Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Hagendorf, Waidhaus, Vohenstrauß, Oberpfälzer Wald, Upper Palatinate, Bavaria, Germany
© Stephan Wolfsried

Show Landesite Photos (3)



Formula:
Mn
2+
3-x
Fe
3+
x
(PO
 
4
)
 
2
(OH)
 
x
 · (3-x)H
 
2
O
System:OrthorhombicColour:red brown; yellowish ...
Hardness:3 - 3½
Member of:Phosphoferrite Group
Name:After Kenneth Knight Landes (1899-1981), Professor of Geology, University of Michigan, who extensively studied the pegmatites of Maine, USA.
Isostructural with:Reddingite


Occurs as an alteration product of ferroan reddingite.

Compare the chemically closely related correianevesite.

Classification of Landesite

IMA status:Approved
Strunz 8th edition ID:7/D.03-20
Nickel-Strunz 10th (pending) edition ID:8.CC.05

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
C : With only medium-sized cations, RO4:H2O = 1:1.5
Dana 8th edition ID:40.3.2.4

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
Hey's CIM Ref.:19.12.18

19 : Phosphates
12 : Phosphates of Mn
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Type Occurrence of Landesite

Type Locality:Berry-Havey Quarry, Poland, Androscoggin Co., Maine, USA
Place of Conservation of Type Material:Harvard University, Cambridge, MA USA
Year of Discovery:1930
Geological Setting of type material:Granite pegmatite
Associated Minerals at type locality:
StrunziteRhodochrositeLithiophiliteHydroxylapatiteFairfieldite
Eosphorite

Physical Properties of Landesite

Lustre:Sub-Vitreous, Greasy
Diaphaneity (Transparency):Translucent
Colour:red brown; yellowish brown in transmitted light
Hardness (Mohs):3 - 3½
Hardness Data:Measured
Cleavage:Perfect
On {010}, perfect; one poor at right angles to the perfect cleavage.
Density (measured):3.21 g/cm3

Crystallography of Landesite

Crystal System:Orthorhombic
Cell Parameters:a = 9.43Å, b = 10.17Å, c = 8.47Å
Ratio:a:b:c = 0.927 : 1 : 0.833
Unit Cell Volume:V 812.30 ų (Calculated from Unit Cell)
Z:4
Morphology:Dipyramidal

Optical Data of Landesite

Type:Biaxial (-)
RI values: nα = 1.720 nβ = 1.728 nγ = 1.735
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r < v moderate
Pleochroism:Visible
Comments:X (┴ to the inferior cleavage) = Dark brown
Y = Light brown
Z (┴ to the best cleavage) = Yellow

Chemical Properties of Landesite

Formula:
Mn
2+
3-x
Fe
3+
x
(PO
 
4
)
 
2
(OH)
 
x
 · (3-x)H
 
2
O
Essential elements:Fe, H, Mn, O, P
All elements listed in formula:Fe, H, Mn, O, P
Analytical Data:An oxidation product of Reddingite.
Relationship of Landesite to other Species
Member of:Phosphoferrite Group
Other Members of Group:

- + 
Correianevesite
Fe
2+
 
Mn
2+
2
(PO
 
4
)
 
2
 · 3H
 
2
O
Garyansellite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
(OH,O) · 1.5H
 
2
O
Kryzhanovskite
(Fe
3+
 
,Mn
2+
 
)
 
2
(PO
 
4
)
 
2
(OH,H
 
2
O)
 
3
Phosphoferrite
(Fe
2+
 
,Mn
2+
 
)
 
3
(PO
 
4
)
 
2
 · 3H
 
2
O
Reddingite
(Mn
2+
 
,Fe
2+
 
)
 
3
(PO
 
4
)
 
2
 · 3H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- + 
8.CC.05Garyansellite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
(OH,O) · 1.5H
 
2
O
8.CC.05Kryzhanovskite
(Fe
3+
 
,Mn
2+
 
)
 
2
(PO
 
4
)
 
2
(OH,H
 
2
O)
 
3
8.CC.05Phosphoferrite
(Fe
2+
 
,Mn
2+
 
)
 
3
(PO
 
4
)
 
2
 · 3H
 
2
O
8.CC.05Reddingite
(Mn
2+
 
,Fe
2+
 
)
 
3
(PO
 
4
)
 
2
 · 3H
 
2
O
8.CC.10Kaatialaite
Fe(H
 
2
AsO
 
4
)
 
3
 · 5H
 
2
O
8.CC.15Leogangite
Cu
 
10
(AsO
 
4
)
 
4
(SO
 
4
)(OH)
 
6
 · 8H
 
2
O
Related Minerals - Hey's Index Grouping:

- + 
19.12.1Metaswitzerite
Mn
 
3
(PO
 
4
)
 
2
 · 4H
 
2
O
19.12.2Bermanite
Mn
2+
 
Mn
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
19.12.3Natrophilite
NaMn
2+
 
PO
 
4
19.12.4Sidorenkite
Na
 
3
Mn
2+
 
(CO
 
3
)(PO
 
4
)
19.12.5Niahite
(NH
 
4
)(Mn
2+
 
,Mg)(PO
 
4
) · H
 
2
O
19.12.6Robertsite
Ca
 
3
Mn
3+
4
(PO
 
4
)
 
3
O
 
2
 · 3H
 
2
O
19.12.7Pararobertsite
Ca
 
2
Mn
3+
3
(PO
 
4
)
 
3
O
 
2
 · 3H
 
2
O
19.12.8Sinkankasite
H
 
2
Mn
2+
 
Al(PO
 
4
)
 
2
(OH) · 6H
 
2
O
19.12.9Mangangordonite
Mn
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.12.10Heterosite
(Fe
3+
 
,Mn
3+
 
)PO
 
4
19.12.11Purpurite
(Mn
3+
 
,Fe
3+
 
)PO
 
4
19.12.12Wolfeite
(Fe
2+
 
,Mn
2+
 
)
 
2
(PO
 
4
)(OH)
19.12.13Triploidite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(OH)
19.12.14Lipscombite
(Fe
2+
 
,Mn
2+
 
)Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
19.12.15Frondelite
Mn
2+
 
Fe
3+
4
(PO
 
4
)
 
3
(OH)
 
5
19.12.16Rockbridgeite
Fe
2+
 
Fe
3+
4
(PO
 
4
)
 
3
(OH)
 
5
19.12.17Kryzhanovskite
(Fe
3+
 
,Mn
2+
 
)
 
2
(PO
 
4
)
 
2
(OH,H
 
2
O)
 
3
19.12.19Phosphoferrite
(Fe
2+
 
,Mn
2+
 
)
 
3
(PO
 
4
)
 
2
 · 3H
 
2
O
19.12.20Reddingite
(Mn
2+
 
,Fe
2+
 
)
 
3
(PO
 
4
)
 
2
 · 3H
 
2
O
19.12.21Earlshannonite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
19.12.22Hureaulite
(Mn,Fe)
 
5
(PO
 
4
)
 
2
(HPO
 
4
)
 
2
 · 4H
 
2
O
19.12.23Switzerite
(Mn,Fe)
 
3
(PO
 
4
)
 
2
 · 7H
 
2
O
19.12.24Laueite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.12.25Pseudolaueite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.12.26Strunzite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 6H
 
2
O
19.12.27Stewartite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.12.28Alluaudite
(Na,Ca)Mn
2+
 
(Fe
3+
 
,Mn
2+
 
,Fe
2+
 
,Mg)
 
2
(PO
 
4
)
 
3
19.12.29Ferroalluaudite
(Na,Ca)Fe
2+
 
(Fe
3+
 
,Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)
 
3
19.12.30Fillowite
{Mn
2+
 
}{Na
 
8
}{Ca
 
4
Na
 
4
}{(Mn
2+
 
,Fe
2+
 
)
 
43
}(PO
 
4
)
 
36
19.12.31Johnsomervilleite
{Ca}{Na
 
6
[ ]
 
2
}{Ca
 
6
Na
 
2
}{(Fe
2+
 
,Mg,Mn
2+
 
)
 
43
}(PO
 
4
)
 
36
19.12.32Wicksite
NaCa
 
2
(Fe
2+
 
,Mn
2+
 
)
 
4
MgFe
3+
 
(PO
 
4
)
 
6
 · 2H
 
2
O
19.12.33Dickinsonite-(KMnNa)
{KNa}{Mn
2+
 
◻}{Ca}{Na
 
3
}{Mn
2+
13
}{Al}(PO
 
4
)
 
12
(OH)
 
2
19.12.34Sarcopside
(Fe
2+
 
,Mn
2+
 
,Mg)
 
3
(PO
 
4
)
 
2
19.12.35Ludlamite
(Fe,Mn,Mg)
 
3
(PO
 
4
)
 
2
 · 4H
 
2
O
19.12.36Graftonite
(Fe
2+
 
,Mn
2+
 
,Ca)
 
3
(PO
 
4
)
 
2
19.12.37Wilhelmvierlingite
CaMnFe
3+
 
(PO
 
4
)
 
2
(OH) · 2H
 
2
O
19.12.38Fairfieldite
Ca
 
2
(Mn
2+
 
,Fe
2+
 
)(PO
 
4
)
 
2
 · 2H
 
2
O
19.12.39Beusite
(Mn
2+
 
,Fe
2+
 
,Ca,Mg)
 
3
(PO
 
4
)
 
2
19.12.40Messelite
Ca
 
2
(Fe
2+
 
,Mn
2+
 
)(PO
 
4
)
 
2
 · 2H
 
2
O
19.12.41Jahnsite-(CaMnFe)
{Ca}{Mn
2+
 
}{Fe
2+
2
}{Fe
3+
2
}(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.12.42Jahnsite-(CaMnMn)
{Ca}{Mn
2+
 
}{Mn
2+
2
}{Fe
3+
2
}(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.12.43Jahnsite-(CaMnMg)
{Ca}{Mn
2+
 
}{(Mg,Fe
2+
 
)
 
2
}{Fe
3+
2
}(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.12.44Keckite
CaMn
2+
 
Fe
3+
2
Fe
3+
2
(PO
 
4
)
 
4
(OH)
 
3
(H
 
2
O)
 
7
19.12.45Stanfieldite
Ca
 
7
Ca
 
2
Mg
 
9
(PO
 
4
)
 
12
19.12.46Laubmannite
(Fe
2+
 
,Mn
2+
 
,Ca)
 
3
Fe
3+
6
(PO
 
4
)
 
4
(OH)
 
12
19.12.47Zodacite
Ca
 
4
Mn
2+
 
Fe
3+
4
(PO
 
4
)
 
6
(OH)
 
4
 · 12H
 
2
O
19.12.48Hagendorfite
NaCaMn
2+
 
Fe
2+
2
(PO
 
4
)
 
3
19.12.49Maghagendorfite
(□,Na,)(Na,Ca,Fe
2+
 
)Mn(Mg,Fe
2+
 
,Fe
3+
 
)
 
3
(PO
 
4
)
 
3
19.12.50Varulite
NaCaMn
2+
 
Mn
2+
2
(PO
 
4
)
 
3
19.12.51Griphite
Na
 
4
Li
 
2
Ca
 
6
(Mn
2+
 
,Fe
2+
 
,Mg)
 
19
Al
 
8
(PO
 
4
)
 
24
(F,OH)
 
8
19.12.52Attakolite
(Ca,Sr)Mn(Al,Fe)
 
4
(HPO
 
4
,PO
 
4
)
 
3
(SiO
 
4
,PO
 
4
)(OH)
 
4
19.12.53Arrojadite-(KFe)
{KNa}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
19.12.54Lun'okite
(Mn,Ca)(Mg,Fe,Mn)Al(PO
 
4
)
 
2
OH · 4H
 
2
O
19.12.55Eosphorite
(Mn
2+
 
,Fe
2+
 
)Al(PO
 
4
)(OH)
 
2
 · H
 
2
O
19.12.56Ernstite
(Mn
2+
 
,Fe
3+
 
)Al(PO
 
4
)(OH,O)
 
2
 · H
 
2
O
19.12.57Childrenite
(Fe
2+
 
,Mn
2+
 
)Al(PO
 
4
)(OH)
 
2
 · H
 
2
O
19.12.58Bobfergusonite
Na
 
2
Mn
 
5
FeAl(PO
 
4
)
 
6
19.12.59Qingheiite
NaMn
3+
 
Mg(Al,Fe
3+
 
)(PO
 
4
)
 
3
19.12.60Whiteite-(CaFeMg)
{Ca}{(Fe
2+
 
,Mn
2+
 
)}{Mg
 
2
}{Al
 
2
}(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.12.61Whiteite-(CaMnMg)
{Ca}{Mn
2+
 
}{Mg
 
2
}{Al
 
2
}(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.12.62Whiteite-(MnFeMg)
{(Mn
2+
 
,Ca)}{(Fe
2+
 
,Mn
2+
 
)}{Mg
 
2
}{Al
 
2
}(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.12.63Rittmannite
{(Mn
2+
 
,Ca)}{Mn
2+
 
}{(Fe
2+
 
,Mn
2+
 
,Mg)
 
2
}{(Al,Fe
3+
 
)
 
2
}(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.12.64Zanazziite
Ca
 
2
Mg
 
5
Be
 
4
(PO
 
4
)
 
6
(OH)
 
4
 · 6H
 
2
O
19.12.65Samuelsonite
(Ca,Ba)Ca
 
8
Fe
2+
2
Mn
2+
2
Al
 
2
(PO
 
4
)
 
10
(OH)
 
2
Other Names for Landesite
Other Languages:
German:Landesit
Russian:Ландезит
Spanish:Landesita
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 Landesite
Reference List:

- + 
Berman and Gonyer (1930) American Mineralogist: 15: 384-385.



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.: 729-730.



American Mineralogist (1964): 49: 1122-1125.



Moore, P. B., Araki, T., Kampf, A. R. (1980): Nomenclature of the phosphoferrite structure type: refinements of landesite and kryzhanovskite. Mineralogical Magazine, 43, 789-795. 
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    • Localities for Landesite
    






    


    

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality. 
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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.

    Brazil
     
    

    • Minas Gerais
    

      • Doce valley
    

        • Conselheiro Pena
    
    		Tom Loomis
    Bulgaria
     
    

    • Kardzhali Oblast (Kurdzhali; Kărdžali; Kurdjali)
    

      • Momchilgrad Obshtina
    
    		Kunov, A. & Mandova, E. (1997): Supergene minerals of the Obichnik Au-Ag deposit (Eastern Rhodopes). Spisanie na Bulgarskoto Geologichesko Druzhestvo  58, 19-24. (in Bulgarian)
    Germany
     
    

    • Bavaria
    

      • Upper Palatinate
    

        • Oberpfälzer Wald
    

          • Vohenstrauß
    

            • Waidhaus
    

              • Hagendorf
    
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    






http://www.berthold-weber.de/h_miner.htm
    





Wittern: "Mineralfundorte in Deutschland", 2001
    Rwanda
     
    

    • Western Province
    

      • Gatumba District
    
    		Daltry, V.D.C. and O. von Knorring (1998) Type-Mineralogy of Rwanda with Particular Reference to the Buranga Pegmatite. Geologica Belgica  1:1-9
    Switzerland
     
    

    • Ticino (Tessin)
    

      • Lago Maggiore
    

        • Brissago
    
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 249.
    USA
     
    

    • Connecticut
    

      • Fairfield Co.
    

        • Town of Ridgefield
    

          • Branchville
    
    		Januzzi (1994) Mineral Data Book
    

    • Maine
    

      • Androscoggin Co.
    

        • Auburn
    

          • East Mount Apatite District
    
    		Mineralogy of Maine,Vol 2: Mining History, Gems, and Geology.  By King &  Mineral News Vol. 12 No. 5  May 1996  By Douglas Watts 
    



        • Poland
    
    		King, V. T. and Foord, E. E., 1994, Mineralogy of Maine, Descriptive Mineralogy, volume 1, Maine Geological Survey, Augusta, Maine, USA, pp. 418 + 88 plates.
    


      • Oxford Co.
    

        • Buckfield
    
    		No reference listed
    



        • Greenwood
    

          • Uncle Tom Mountain
    
    		Mineralogical Record (1991) 22:381-393
    



        • Stoneham
    
    		original reference lost; listed in King & Foord, 1994: Mineralogy of Maine, V.1
    

    • New Hampshire
    

      • Grafton Co.
    

        • Groton
    
    		Morrill, 1960. NH Mines and Minerals Localities, 2nd ed. 
    


    


    

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