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Krautite

Big Photo

Jáchymov (St Joachimsthal), Ostrov, Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic
© Knut Eldjarn

Show Krautite Photos (4)
Formula:
MnHAsO
 
4
·H
 
2
O
System:Monoclinic


Krautite Group.

Classification of Krautite

IMA status:Approved
Strunz 8th edition ID:7/C.05-20
Nickel-Strunz 10th (pending) edition ID:8.CB.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
Dana 8th edition ID:39.1.3.1

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
Hey's CIM Ref.:20.8.7

20 : Arsenates (also arsenates with phosphate, but without other anions)
8 : Arsenates of Mn
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Type Occurrence of Krautite

Type Locality:Sacarîmb (Sãcãrâmb; Szekerembe; Nagyág), Hunedoara Co., Romania
Year of Discovery:1975

Crystallography of Krautite

Crystal System:Monoclinic
Cell Parameters:a = 8.01Å, b = 15.95Å, c = 6.8Å
β = 96.6°
Ratio:a:b:c = 0.502 : 1 : 0.426
Unit Cell Volume:V 863.01 ų (Calculated from Unit Cell)

Optical Data of Krautite

Type:Biaxial (+)
RI values: nα = 1.620 nβ = 1.639 nγ = 1.686
2V:Measured: 65° , Calculated: 68°
Maximum Birefringence:δ = 0.066

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

Chemical Properties of Krautite

Formula:
MnHAsO
 
4
·H
 
2
O
Essential elements:As, H, Mn, O
All elements listed in formula:As, H, Mn, O

Relationship of Krautite to other Species

Related to:
  • Krautite Group
    • Related Minerals - Nickel-Strunz Grouping):

    - +
    8.CB.05Serrabrancaite
    MnPO
     
    4
    		·H
     
    2
    		O
    8.CB.10Hureaulite
    (Mn,Fe)
     
    5
    		H
     
    2
    		(PO
     
    4
    		)
     
    4
    		·4H
     
    2
    		O
    8.CB.10Sainfeldite
    Ca
     
    5
    		H
     
    2
    		(AsO
     
    4
    		)
     
    4
    		·4H
     
    2
    		O
    8.CB.10Villyaellenite
    (Mn,Ca,Zn)
     
    5
    		(AsO
     
    4
    		)
     
    2
    		[AsO
     
    3
    		(OH)]
     
    2
    		·4H
     
    2
    		O
    8.CB.10UM1997-09
    (Mg,Ca,Zn)
     
    5
    		(AsO
     
    4
    		)
     
    2
    		[AsO
     
    3
    		(OH)]
     
    2
    		·4H
     
    2
    		O
    8.CB.15Fluckite
    CaMnH
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·2H
     
    2
    		O
    8.CB.20Cobaltkoritnigite
    (Co,Zn)[HAsO
     
    4
    		] · H
     
    2
    		O
    8.CB.20Koritnigite
    Zn[HAsO
     
    4
    		] · H
     
    2
    		O
    8.CB.25Yvonite
    Cu[HAsO
     
    4
    		] · 2H
     
    2
    		O
    8.CB.30Geminite
    Cu
     
    2
    		[As
     
    2
    		O
     
    7
    		] · 3H
     
    2
    		O
    8.CB.35Schubnelite
    Fe
     
    2-x
    		V
     
    2
    		O
     
    4
    		(OH)
     
    4
    8.CB.40Radovanite
    Cu
     
    2
    		Fe
    3+
     
    		[(As
    3+
     
    		O
     
    2
    		(OH)]
     
    2
    		[As
    5+
     
    		O
     
    4
    		]·H
     
    2
    		O
    8.CB.45Kazakhstanite
    Fe
     
    5
    		V
     
    3
    		V
     
    12
    		O
     
    39
    		(OH)
     
    9
    		·9H
     
    2
    		O
    8.CB.50Kolovratite
    (Zn,Ni,Cu)
     
    2-5
    		Al
     
    4-6
    		(Si,V
    4+
     
    		,V
    5+
     
    		)
     
    4
    		(O,OH)
     
    20
    		·7.5H
     
    2
    		O
    8.CB.55Irhtemite
    Ca
     
    4
    		Mg[(HAsO
     
    4
    		)
     
    2
    		|(AsO
     
    4
    		)
     
    2
    		] · 4H
     
    2
    		O
    Related Minerals - Hey's Index Grouping:

    - +
    20.8.1Sarkinite
    Mn
    2+
    2
    		[OH|AsO
     
    4
    		]
    20.8.2Eveite
    Mn
    2+
    2
    		[OH|AsO
     
    4
    		]
    20.8.3Arsenoclasite
    Mn
    2+
    5
    		[(OH)
     
    2
    		|AsO
     
    4
    		]
     
    2
    20.8.4Flinkite
    Mn
    2+
    2
    		Mn
    3+
     
    		AsO
     
    4
    		(OH)
     
    4
    20.8.5Jarosewichite
    Mn
     
    3
    		MnAsO
     
    4
    		(OH)
     
    6
    20.8.6Allactite
    Mn
    2+
    7
    		(AsO
     
    4
    		)
     
    2
    		(OH)
     
    8
    20.8.8Synadelphite
    Mn
    2+
    9
    		[(OH)
     
    9
    		|As
    3+
     
    		O
     
    3
    		|(As
    5+
     
    		O
     
    4
    		)
     
    2
    		] · 2H
     
    2
    		O
    20.8.9Sterlinghillite
    Mn
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    20.8.10Geigerite
    Mn
     
    5
    		[HAsO
     
    4
    		|AsO
     
    4
    		]
     
    2
    		 · 10H
     
    2
    		O
    20.8.11Akrochordite
    (Mn
    2+
     
    		,Mg)
     
    5
    		[(OH)
     
    2
    		|AsO
     
    4
    		]
     
    2
    		 · 4H
     
    2
    		O
    20.8.12Manganohörnesite
    (Mn,Mg)
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    20.8.13Fluckite
    CaMnH
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·2H
     
    2
    		O
    20.8.14Brandtite
    Ca
     
    2
    		(Mn
    2+
     
    		,Mg)[AsO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    20.8.15Parabrandtite
    Ca
     
    2
    		Mn
    2+
     
    		[AsO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    20.8.16Wallkilldellite-(Mn)
    Ca
     
    2
    		Mn
    2+
    3
    		[(OH)
     
    2
    		|AsO
     
    4
    		]
     
    2
    		 · 9H
     
    2
    		O
    20.8.17Berzeliite
    NaCa
     
    2
    		(Mg,Mn
    2+
     
    		)
     
    2
    		[AsO
     
    4
    		]
     
    3
    20.8.18Manganberzeliite
    (Ca,Na)
     
    3
    		(Mn
    2+
     
    		,Mg)
     
    2
    		[AsO
     
    4
    		]
     
    3
    20.8.19Magnesiochlorophoenicite
    (Mg,Mn)
     
    3
    		Zn
     
    2
    		(AsO
     
    4
    		)(OH,O)
     
    6
    20.8.20Villyaellenite
    (Mn,Ca,Zn)
     
    5
    		(AsO
     
    4
    		)
     
    2
    		[AsO
     
    3
    		(OH)]
     
    2
    		·4H
     
    2
    		O
    20.8.21Hematolite
    (Mn,Mg,Al)
     
    15
    		(AsO
     
    3
    		)(AsO
     
    4
    		)
     
    2
    		(OH)
     
    23
    20.8.22Grischunite
    NaCa
     
    2
    		Mn
    2+
    5
    		Fe
    3+
     
    		[AsO
     
    4
    		]
     
    6
    		 · 2H
     
    2
    		O

    Other Names for Krautite

    Synonyms:
    IMA1974-028
    Other Languages:
    German:Krautit
    Russian:Краутит
    Spanish:Krautita

    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 Krautite

    Reference List:American Mineralogist (1976): 61: 503.

    American Mineralogist (1979): 1248-1254.

    American Mineralogist (1990): 75: 1140.

    Articles/Blogs about Krautite

    Internet Links for Krautite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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    Localities for Krautite

    (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.
    Chile
     
    • Atacama Region
      • Copiapó Province
        • Tierra Amarilla
          • Pampa Larga district
    		analysed material from a german Museum collection
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Ostrov
            • Jáchymov (St Joachimsthal)
    		Lapis 2002(7/8), 52
    Romania
     
    • Hunedoara Co.
    		Am. Min. 61, 503 (1976)
    Mineral and/or Locality
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