Kastningite
A valid IMA mineral species
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About Kastningite
Formula:
(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O
Colour:
Generally colorless, may be white
Lustre:
Vitreous
Hardness:
1 - 2
Specific Gravity:
2.35
Crystal System:
Triclinic
Member of:
Name:
Named in 1999 by Jochen SchlĂŒter, Karl-Heinz Klaska, Karen Friese, and Gunadi Adiwidjaja after JĂŒrgen Kastning (1932 - 5 January 2017), from Reinbeck near Hamburg, Germany, mineral collector and mineral dealer specializing in phosphate minerals, who discovered the mineral.
Type Locality:
Dimorph of:
Isostructural with:
DANGER: Kastningite easily dehydrates and decomposes near hot illumination sources. The kastnigite crystals become chalky and are probably no longer crystalline. Lighting units should be very far away from specimens (> 20 cm) when they are being photographed. LED lights can be hot enough to dehydrate this species. (See also posting by Jason B. Smith in https://www.mindat.org/mesg-640023.html).
Unique Identifiers
Mindat ID:
7129
Long-form identifier:
mindat:1:1:7129:7
GUID
(UUID V4):
(UUID V4):
87d19c17-af4c-46b2-8f69-f3db6839746e
IMA Classification of Kastningite
Classification of Kastningite
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
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
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Kng | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Kastningite
Vitreous
Transparency:
Transparent, Translucent
Comment:
May be etched with reduced luster.
Colour:
Generally colorless, may be white
Streak:
White
Hardness:
1 - 2 on Mohs scale
Tenacity:
Brittle
Density:
2.35 g/cm3 (Measured) 2.379 g/cm3 (Calculated)
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.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v strong
Pleochroism:
Non-pleochroic
Chemistry of Kastningite
Mindat Formula:
(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O
Crystallography of Kastningite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 7.010 Å, b = 10.205 Å, c = 10.504 Å
α = 71.82°, β = 89.62°, γ = 69.90°
α = 71.82°, β = 89.62°, γ = 69.90°
Ratio:
a:b:c = 0.687 : 1 : 1.029
Unit Cell V:
666.16 Ă
Âł (Calculated from Unit Cell)
Z:
2
Morphology:
Commonly found in euhedral crystals. Usually thin bladed with acutely sloping terminations. Tabular on [001], showing {001}, {111}, {111}, {100}. Length of an individual crystals rarely reaches 1 mm in size.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0011083 | Kastningite | Adiwidjaja G, Friese K, Klaska K H, Schluter J (1999) The crystal structure of kastningite (Mn,Fe,Mg)(H2O)4[Al2(OH)2(H2O)2(PO4)2]*2H2O - a new hydroxyl aquated orthophosphate hydrate mineral Zeitschrift fur Kristallographie 214 465-468 | 1999 | Waidhaus, Bavaria, Germany | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
9.917 Ă | (100) |
6.541 Ă | (36) |
4.957 Ă | (50) |
3.312 Ă | (23) |
3.095 Ă | (28) |
3.001 Ă | (30) |
1.653 Ă | (25) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites | |
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47c : [Carbonates, phosphates, borates, nitrates] | |
47e : [Vanadates, chromates, manganates] |
Geological Setting:
Granite pegmatite.
Type Occurrence of Kastningite
General Appearance of Type Material:
Sprays of thin, tabular crystals, up to 2 mm long.
Place of Conservation of Type Material:
Mineralogical Museum, University of Hamburg, Hamburg, Germany.
Geological Setting of Type Material:
Granite pegmatite.
Associated Minerals at Type Locality:
Synonyms of Kastningite
Other Language Names for Kastningite
German:Kastningit
Spanish:Kastningita
Relationship of Kastningite to other Species
Member of:
Other Members of this group:
Ferrolaueite | Fe2+Fe3+2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Gordonite | MgAl2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Kummerite | Mn2+Fe3+Al(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Laueite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Mangangordonite | Mn2+Al2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Paravauxite | Fe2+Al2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Sigloite | Fe3+Al2(PO4)2(OH)3 · 7H2O | Tric. 1 : P1 |
Stewartite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Ushkovite | MgFe3+2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Kastningite associated with Mangangordonite | Mn2+Al2(PO4)2(OH)2 · 8H2O |
3 photos of Kastningite associated with Strengite | FePO4 · 2H2O |
3 photos of Kastningite associated with Cacoxenite | Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
3 photos of Kastningite associated with Earlshannonite | Mn2+Fe3+2(PO4)2(OH)2 · 4H2O |
3 photos of Kastningite associated with Rittmannite | {(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2O |
2 photos of Kastningite associated with Albite | Na(AlSi3O8) |
1 photo of Kastningite associated with Siderite | FeCO3 |
1 photo of Kastningite associated with Quartz | SiO2 |
1 photo of Kastningite associated with Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
1 photo of Kastningite associated with Strunzite | Mn2+Fe3+2(PO4)2(OH)2 · 6H2O |
Related Minerals - Strunz-mindat Grouping
8.DC. | Ianbruceite | Zn2(AsO4)(OH) · 3H2O |
8.DC. | Césarferreiraite | Fe2+ Fe3+2(AsO4)2(OH)2 · 8H2O |
8.DC. | Ferrivauxite | Fe3+Al2(PO4)2(OH)3 · 5H2O |
8.DC.05 | Nissonite | Cu2Mg2(PO4)2(OH)2 · 5H2O |
8.DC.07 | Euchroite | Cu2(AsO4)(OH) · 3H2O |
8.DC.10 | Legrandite | Zn2(AsO4)(OH) · H2O |
8.DC.12 | Strashimirite | Cu8(AsO4)4(OH)4 · 5H2O |
8.DC.15 | Arthurite | CuFe3+2(AsO4)2(OH)2 · 4H2O |
8.DC.15 | Earlshannonite | Mn2+Fe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | Ojuelaite | ZnFe3+2(AsO4)2(OH)2 · 4H2O |
8.DC.15 | Whitmoreite | Fe2+Fe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | Cobaltarthurite | (Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2O |
8.DC.15 | Bendadaite | Fe2+Fe3+2(AsO4)2(OH)2 · 4H2O |
8.DC.15 | Kunatite | CuFe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | UM2006-27-PO:FeHZn | ZnFe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | UKI-2006-(PO:AlCuFeH) | Fe2+Al3+2(PO4)2(OH)2 · 4H2O |
8.DC.17 | Kleemanite | ZnAl2(PO4)2(OH)2 · 3H2O |
8.DC.20 | Bermanite | Mn2+Mn3+2(PO4)2(OH)2 · 4H2O |
8.DC.20 | Coralloite | Mn2+Mn3+2(AsO4)2(OH)2 · 4H2O |
8.DC.20 | Magnesiobermanite | MgMn3+2(PO4)2(OH)2 · 4H2O |
8.DC.22 | Kovdorskite | Mg2(PO4)(OH) · 3H2O |
8.DC.25 | Ferristrunzite | Fe3+Fe3+2(PO4)2(OH)3 · 5H2O |
8.DC.25 | Ferrostrunzite | Fe2+Fe3+2(PO4)2(OH)2 · 6H2O |
8.DC.25 | Metavauxite | Fe2+Al2(PO4)2(OH)2 · 8H2O |
8.DC.25 | Metavivianite | Fe2+Fe3+2(PO4)2(OH)2 · 6H2O |
8.DC.25 | Strunzite | Mn2+Fe3+2(PO4)2(OH)2 · 6H2O |
8.DC.25 | Zincostrunzite | ZnFe3+2(PO4)2(OH)2 · 6.5H2O |
8.DC.27 | Beraunite | Fe3+6(PO4)4O(OH)4 · 6H2O |
8.DC.27 | TvrdĂœite | Fe2+Fe3+2 Al3(PO4)4(OH)5(H2O)4 · 2H2O |
8.DC.27 | Zincoberaunite | ZnFe3+5(PO4)4(OH)5 · 6H2O |
8.DC.30 | Gordonite | MgAl2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Laueite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Mangangordonite | Mn2+Al2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Paravauxite | Fe2+Al2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Pseudolaueite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Sigloite | Fe3+Al2(PO4)2(OH)3 · 7H2O |
8.DC.30 | Stewartite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Ushkovite | MgFe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Ferrolaueite | Fe2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Maghrebite | MgAl2(AsO4)2(OH)2 · 8H2O |
8.DC.30 | Nordgauite | MnAl2(PO4)2(F,OH)2 · 5H2O |
8.DC.30 | Kayrobertsonite | [MnAl2(PO4)2(OH)2(H2O)4] · 2H2O |
8.DC.30 | Kummerite | Mn2+Fe3+Al(PO4)2(OH)2 · 8H2O |
8.DC.32 | Tinticite | Fe3+3(PO4)2(OH)3 · 3H2O |
8.DC.32 | Kamarizaite | Fe3+3(AsO4)2(OH)3 · 3H2O |
8.DC.35 | Vauxite | Fe2+Al2(PO4)2(OH)2 · 6H2O |
8.DC.37 | Vantasselite | Al4(PO4)3(OH)3 · 9H2O |
8.DC.40 | Cacoxenite | Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
8.DC.45 | Gormanite | (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O |
8.DC.45 | Souzalite | (Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O |
8.DC.47 | Kingite | Al3(PO4)2F2(OH) · 7H2O |
8.DC.50 | Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
8.DC.50 | Allanpringite | Fe3+3(PO4)2(OH)3 · 5H2O |
8.DC.50 | Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
8.DC.52 | Kribergite | Al5(PO4)3(SO4)(OH)4 · 4H2O |
8.DC.55 | Mapimite | Zn2Fe3+3(AsO4)3(OH)4 · 10H2O |
8.DC.57 | Ogdensburgite | Ca2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2O |
8.DC.60 | Nevadaite | (Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2O |
8.DC.60 | Cloncurryite | Cu0.5(VO)0.5Al2(PO4)2F2 · 5H2O |
8.DC.62 | Kenngottite | Mn2+3Fe3+4(PO4)4(OH)6(H2O)2 |
8.DC.67 | Molinelloite | Cu(H2O)(OH)V4+O(V5+O4) |
8.DC.70 | Whitecapsite | H16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2O |
8.DC.75 | Heimite | PbCu2(AsO4)(OH)3 · 2H2O |
8.DC.80 | Lednevite | Cu[PO3(OH)] · H2O |
Fluorescence of Kastningite
Not Fluorescent in UV
Other Information
Special Storage/
Display Requirements:
Display Requirements:
Kastningite easily dehydrates and decomposes near hot illumination sources. The kastnigite crystals become chalky and are probably no longer crystalline. Lighting units should be very far away from specimens (> 20 cm) when they are being photographed. LED lights can be hot enough to dehydrate this species.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Kastningite
mindat.org URL:
https://www.mindat.org/min-7129.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
References for Kastningite
Reference List:
Adiwidjaja, G., Friese, K., Klaska, K.-H., SchlĂŒter, J. (1999) The crystal structure of kastningite (Mn,Fe,Mg)(H2O)4[Al2(OH)2(H2O)2(PO4)2]·2H2O â a new hydroxyl aquated orthophosphate hydrate mineral. Zeitschrift fĂŒr Kristallographie - Crystalline Materials, 214 (8) 465-468 doi:10.1524/zkri.1999.214.8.465
Localities for Kastningite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Brazil | |
| Sergio Varvello collection |
Europe | |
Berbain et al. (2012) | |
France | |
| Berbain et al. (2012) |
Germany | |
| www.berthold-weber.de (2001) +1 other reference |
| SchlĂŒter et al. (1999) +1 other reference |
Portugal | |
| Pedro Alves collection |
Pedro Alves collection - pXRD analyzed | |
USA | |
| Jason B. Smith. +1 other reference |
| King (n.d.) |
| confirmed by EDS/XRD +1 other reference |
| site indentification by comparsion to ... |
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Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA