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Kastningite

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Formula:
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
System:TriclinicColour:Generally colorless, may ...
Lustre:VitreousHardness:1 - 2
Member of:Laueite Group
Name:Named in 1999 by Jochen Schlüter, Karl-Heinz Klaska, Karsten (Carsten) Friese, and Gunadi Adiwidjaja after Jürgen Kastning (b. 1932), from Reinbeck near Hamburg, Germany, mineral collector and mineral dealer specializing in phosphate minerals, who discovered the mineral.
Dimorph of:Mangangordonite


Commonly found in euhedral crystals. Crystals are generally transparent to white. The habit is frequently thin bladed with an acutely, steeply sloping end. Length of an individual crystal rarely reaches 1 mm in size.

Classification of Kastningite

IMA status:Approved 1997
Strunz 8th edition ID:7/D.09-25
Nickel-Strunz 10th (pending) edition ID:8.DC.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
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Type Occurrence of Kastningite

Type Locality:Silbergrube, Waidhaus, Vohenstrauß, Oberpfälzer Wald, Upper Palatinate, Bavaria, Germany
Geological Setting of type material:Granite pegmatite

Occurrences of Kastningite

Geological Setting:Granite pegmatite.

Physical Properties of Kastningite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Comment:May be etched with reduced luster.
Colour:Generally colorless, may be white
Streak:White
Hardness (Mohs):1 - 2
Tenacity:Brittle
Density (measured):2.35 g/cm3
Density (calculated):2.379 g/cm3

Crystallography of Kastningite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Space Group Setting:P1
Cell Parameters:a = 7.010Å, b = 10.205Å, c = 10.504Å
α = 71.82°, β = 89.62°, γ = 69.90°
Ratio:a:b:c = 0.687 : 1 : 1.029
Unit Cell Volume:V 666.16 ų (Calculated from Unit Cell)
Z:2
Morphology:Usually thin bladed with acutely sloping terminations.
X-Ray Powder Diffraction:
d-spacingIntensity
9.917 (100)
6.541 (36)
4.957 (50)
3.312 (23)
3.095 (28)
3.001 (30)
1.653 (25)

Optical Data of Kastningite

Type:Biaxial (-)
RI values: nα = 1.567 nβ = 1.574 nγ = 1.582
2V:Measured: 94.7° , Calculated: 90.6°
Birefringence:0.015
Maximum Birefringence:δ = 0.015

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

Chemical Properties of Kastningite

Formula:
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Simplified for copy/paste:(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2·8H2O
Essential elements:Al, H, Mn, O, P
All elements listed in formula:Al, Fe, H, Mg, Mn, O, P

Relationship of Kastningite to other Species

Member of:Laueite Group
Other Members of Group:

- +
Ferrolaueite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Gordonite
MgAl
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Laueite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Maghrebite
MgAl
 
2
(AsO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Mangangordonite
Mn
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Paravauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Sigloite
Fe
3+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
3
· 7H
 
2
O
Stewartite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Ushkovite
MgFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
Common Associates:
SideriteQuartzIndicolite
Related Minerals - Nickel-Strunz Grouping):

- +
8.DC.05Nissonite
Cu
 
2
Mg
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 5H
 
2
O
8.DC.07Euchroite
Cu
 
2
(AsO
 
4
)(OH) · 3H
 
2
O
8.DC.10Legrandite
Zn
 
2
(AsO
 
4
)(OH) · H
 
2
O
8.DC.12Strashimirite
Cu
 
8
(AsO
 
4
)
 
4
(OH)
 
4
· 5H
 
2
O
8.DC.15Arthurite
CuFe
3+
2
(AsO
 
4
,PO
 
4
,SO
 
4
)
 
2
(OH,O)
 
2
· 4H
 
2
O
8.DC.15Earlshannonite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Ojuelaite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Whitmoreite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Cobaltarthurite
(Co,Mg)Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Bendadaite
Fe
2+
 
Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Kunatite
CuFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15UKI-2006-(PO:FeHZn)
ZnFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15UKI-2006-(PO:AlCuFeH)
Fe
2+
 
Al
 
3
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.17Kleemanite
ZnAl
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 3H
 
2
O
8.DC.20Bermanite
Mn
2+
 
Mn
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.20Coralloite
Mn
2+
 
Mn
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.22Kovdorskite
Mg
 
2
(PO
 
4
)(OH) · 3H
 
2
O
8.DC.25Ferristrunzite
Fe
3+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
3
· 5H
 
2
O
8.DC.25Ferrostrunzite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
8.DC.25Metavauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.25Metavivianite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
8.DC.25Strunzite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
8.DC.27Beraunite
Fe
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
5
· 4H
 
2
O
8.DC.30Gordonite
MgAl
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Laueite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Mangangordonite
Mn
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Paravauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Pseudolaueite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Sigloite
Fe
3+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
3
· 7H
 
2
O
8.DC.30Stewartite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Ushkovite
MgFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Ferrolaueite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Maghrebite
MgAl
 
2
(AsO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Nordgauite
MnAl
 
2
(PO
 
4
)
 
2
(F,OH)
 
2
· 5H
 
2
O
8.DC.32Tinticite
Fe
3+
5.34
(PO
 
4
)
 
3.62
(VO
 
4
)
 
0.38
(OH)
 
4
· 6.7H
 
2
O
8.DC.35Vauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
8.DC.37Vantasselite
Al
 
4
(PO
 
4
)
 
3
(OH)
 
3
· 9H
 
2
O
8.DC.40Cacoxenite
Fe
3+
24
Al(PO
 
4
)
 
17
O
 
6
(OH)
 
12
· 17H
 
2
O
8.DC.45Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
· 2H
 
2
O
8.DC.45Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
· 2H
 
2
O
8.DC.47Kingite
Al
 
3
(PO
 
4
)
 
2
F
 
2
(OH) · 7H
 
2
O
8.DC.50Wavellite
Al
 
3
(PO
 
4
)
 
2
(OH,F)
 
3
· 5H
 
2
O
8.DC.50Allanpringite
Fe
3+
3
(PO
 
4
)
 
2
(OH)
 
3
· 5H
 
2
O
8.DC.52Kribergite
Al
 
5
(PO
 
4
)
 
3
(SO
 
4
)(OH)
 
4
· 4H
 
2
O
8.DC.55Mapimite
Zn
 
2
Fe
3+
3
(AsO
 
4
)
 
3
(OH)
 
4
· 10H
 
2
O
8.DC.57Ogdensburgite
Ca
 
2
Fe
3+
4
(Zn,Mn
2+
 
)(AsO
 
4
)
 
4
(OH)
 
6
· 6H
 
2
O
8.DC.60Nevadaite
(Cu
2+
 
,Al,V
3+
 
)
 
6
Al
 
8
(PO
 
4
)
 
8
F
 
8
(OH)
 
2
· 22H
 
2
O
8.DC.60Cloncurryite
(Cu,VO)Al
 
2
(PO
 
4
)
 
2
(F,OH)
 
2
· 4.5-5H
 
2
O

Other Names for Kastningite

Synonyms:
IMA1997-033
Other Languages:
German:Kastningit
Spanish:Kastningita

Other Information

Fluorescence in UV light:Not Fluorescent in UV
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 Kastningite

Reference List:

- +
J. Schlüter, K.-H Klaska, K. Friese, and G. Adiwidjaja, 1999, Neues Jahrbuch für Mineralogie, Monatshefte (1999): 40-48.

Schlüter, J. and Kastning, J. (1999): Das neue Phosphatmineral Kastningit und weitere Neufunde aus Waidhaus, Oberpfalz. Lapis: 24(6): 39-42, 62. (in German).

Zeitschrift für Kristallographie: 214: 465-468.

Internet Links for Kastningite

Search Engines:
  • Look for Kastningite on Google
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  • External Links:
  • Look for Kastningite on Webmineral
  • Look for Kastningite on Athena Mineralogy
  • Look for Kastningite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
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  • Buy from David K Joyce minerals
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  • Rare and Unusual minerals at Mineralogical Research Company
  • Kastningite specimens for sale - minfind.com
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  • The Arkenstone - Fine Minerals
  • Localities for Kastningite

    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.
    France
     
    • Languedoc-Roussillon
      • Pyrénées-Orientales
    Berbain,C., Riley, T., Favreau, G., (2012): Phosphates des pegmatites du massif des Albères (Pyrénées-Orientales). Le Cahier des Micromonteurs. 117, 121-172
    Germany
     
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Vohenstrauß
            • Waidhaus
              • Hagendorf
    http://www.berthold-weber.de/h_miner.htm
    N. Jb. Miner. Mh., 1, 1999, 40 - 48
    Portugal
     
    • Guarda District
      • Sabugal
        • Bendada
    Pedro Alves collection
    Pedro Alves collection - pXRD analyzed
    USA
     
    • Maine
      • Oxford Co.
        • Greenwood
          • Uncle Tom Mountain
    Jason B. Smith.
        • Newry
    Van King
    • North Carolina
      • Cleveland Co.
        • Kings Mountain District
    confirmed by EDS/XRD, New Orleans University, 2001
      • Gaston Co.
        • Bessemer City
    site indentification by comparsion to Foote mine specimens
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