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Kastningite

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Formula:
(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O
System:
Triclinic
Colour:
Generally colorless, may ...
Lustre:
Vitreous
Hardness:
1 - 2
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:
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

Approved 1997
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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First Recorded Occurrence of Kastningite

Geological Setting of First Recorded Material:
Granite pegmatite

Occurrences of Kastningite

Geological Setting:
Granite pegmatite.

Physical Properties of Kastningite

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:
2.35 g/cm3 (Measured)    2.379 g/cm3 (Calculated)

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
Z:
2
Morphology:
Usually thin bladed with acutely sloping terminations.
X-Ray Powder Diffraction Data:
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
Max Birefringence:
δ = 0.015
Image 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:
(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O
Essential elements:
All elements listed in formula:

Relationship of Kastningite to other Species

Other Members of Group:
FerrolaueiteFe2+Fe23+(PO4)2(OH)2 · 8H2O
GordoniteMgAl2(PO4)2(OH)2 · 8H2O
LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2O
ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
UshkoviteMgFe23+(PO4)2(OH)2 · 8H2O
Common Associates:
8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2O
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2O
8.DC.10LegranditeZn2(AsO4)(OH) · H2O
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2O
8.DC.15ArthuriteCuFe23+(AsO4)2(OH)2 · 4H2O
8.DC.15EarlshannoniteMn2+Fe23+(PO4)2(OH)2 · 4H2O
8.DC.15OjuelaiteZnFe23+(AsO4)2(OH)2 · 4H2O
8.DC.15WhitmoreiteFe2+Fe23+(PO4)2(OH)2 · 4H2O
8.DC.15Cobaltarthurite(Co,Mg)Fe23+(AsO4)2(OH)2 · 4H2O
8.DC.15BendadaiteFe2+Fe23+(AsO4)2(OH)2 · 4H2O
8.DC.15KunatiteCuFe23+(PO4)2(OH)2 · 4H2O
8.DC.15UKI-2006-(PO:FeHZn)ZnFe23+(PO4)2(OH)2 · 4H2O
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2O
8.DC.20BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
8.DC.20CoralloiteMn2+Mn23+(AsO4)2(OH)2 · 4H2O
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2O
8.DC.25FerristrunziteFe3+Fe23+(PO4)2(OH)3 · 5H2O
8.DC.25FerrostrunziteFe2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
8.DC.25MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.25StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.27BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2O
8.DC.30LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2O
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
8.DC.30PseudolaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
8.DC.30StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30UshkoviteMgFe23+(PO4)2(OH)2 · 8H2O
8.DC.30FerrolaueiteFe2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2O
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2O
8.DC.32TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2O
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2O
8.DC.40CacoxeniteFe243+Al(PO4)17O6(OH)12 · 17H2O
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2O
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2O
8.DC.50AllanpringiteFe33+(PO4)2(OH)3 · 5H2O
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2O
8.DC.55MapimiteZn2Fe33+(AsO4)3(OH)4 · 10H2O
8.DC.57OgdensburgiteCa2Fe43+(Zn,Mn2+)(AsO4)4(OH)6 · 6H2O
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2O
8.DC.60Cloncurryite(Cu,VO)Al2(PO4)2(F,OH)2 · 4.5-5H2O

Other Names for Kastningite

Name in Other Languages:
German:Kastningit
Spanish:Kastningita

Other Information

Not Fluorescent in UV
Health Risks:
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

Localities for Kastningite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
        • Collioure (Cotlliure)
BERBAIN. C, RILEY. T, FAVREAU. G, (2012) Phosphates des pegmatites du massif des Albères. Ed Association Française de Microminéralogie
Germany
 
  • Bavaria
    • Upper Palatinate
      • 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
Mineral and/or Locality  
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