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Allanpringite

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Allan Pring
Formula:
Fe33+(PO4)2(OH)3 · 5H2O
System:
Monoclinic
Colour:
Pale brown-yellow
Hardness:
3
Name:
For Dr. Allan Pring, eminent Australian mineralogist and Curator at the South Australian Museum, Adelaide.
The monoclinic-pseudoorthorhombic Fe3+-analogue of the orthorhombic Al-phosphate Wavellite.

Classification of Allanpringite

Approved 2004
7/D.11-107
8.DC.50

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
42.10.2.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
10 : A3(XO4)2Zq·xH2O
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http://www.mindat.org/min-27431.html
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First Recorded Occurrence of Allanpringite

General Appearance of First Recorded Material:
Acicular, invariably twinned (by nonmerohedry) crystals, which are always intergrown to form bundles of subparallel individuals
Geological Setting of First Recorded Material:
With other iron phosphates in the dump of an abandoned iron mine
Associated Minerals at First Recorded Locality:

Physical Properties of Allanpringite

Vitreous
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Pale brown-yellow
Streak:
White with a pale yellowish tint
Hardness (Mohs):
3
Tenacity:
Brittle
Cleavage:
Perfect
parallel to the morphological elongation; good parallel to {010}
Fracture:
Irregular/Uneven
Density:
2.54(2) g/cm3 (Measured)    2.583 g/cm3 (Calculated)
Comment:
Calculated density refers to the empirical formula

Crystallography of Allanpringite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 9.777(3) Å, b = 7.358(2) Å, c = 17.83(5) Å
β = 92.19(4)°
Ratio:
a:b:c = 1.329 : 1 : 2.423
Unit Cell Volume:
V 1281.7 ų
Z:
4
Morphology:
Acicular crystals, elongated along [010], to 1.5 mm, in bundles, to 2 mm, of subparallel individuals
Comment:
Cell parameter from single-crystal data
X-Ray Powder Diffraction Data:
d-spacingIntensity
8.90 (100)
8.41 (60)
5.870 (50)
3.600 (50)
3.231 (80)

Optical Data of Allanpringite

Type:
Biaxial (+)
RI values:
nα = 1.662(5) nβ = 1.675(5) nγ = 1.747(5)
2V:
Calculated: 48°
Max Birefringence:
δ = 0.085
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
not visible
Pleochroism:
Strong
Comments:
X colourless, Y colourless, Z dark yellow; absorption Z ≫ X ∼ Y; orientation XYZ = **b (pseudoorthorhombic)

Chemical Properties of Allanpringite

Formula:
Fe33+(PO4)2(OH)3 · 5H2O
Essential elements:
All elements listed in formula:
Analytical Data:
Results from electron microprobe analysis
Empirical formula based on 16 oxygen atoms per formula unit
Fe2O3      (47.84)
Al2O3       (0.34)
Mn2O3       (0.04)
CuO         (0.08)
P2O5       (28.56)
F           (0.02)
H2O        (23.49) (calculated)
less O = F  (0.01)

total      100.36 wt.-%
Empirical Formula:
(Fe2.98Al0.03)(PO4)2{(OH)3.02F0.01} · 4.97H2O

Relationship of Allanpringite to other Species

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.30Kastningite(Mn2+,Fe2+,Mg)Al2(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.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 Allanpringite

Name in Other Languages:

Other Information

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 Allanpringite

Reference List:
U. Kolitsch, H.-J. Bernhardt, C. L. Lengauer, G. Blaß and E. Tillmanns (2006): Allanpringite, Fe3(PO4)2(OH)3·5H2O, a new ferric iron phosphate from Germany, and its close relation to wavellite. European Journal of Mineralogy, 18, 793-801.

Internet Links for Allanpringite

Localities for Allanpringite

(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.
Germany
 
  • Hesse
    • Wetzlar
      • Weilburg
        • Essershausen
U. Kolitsch, H.-J. Bernhardt, C. L. Lengauer, G. Blaß and E. Tillmanns (2006): Allanpringite, Fe3(PO4)2(OH)3·5H2O, a new ferric iron phosphate from Germany, and its close relation to wavellite. European Journal of Mineralogy, 18, 793-801.
Mineral and/or Locality  
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