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Waterhouseite

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About WaterhouseiteHide

Frederick George Waterhouse
Formula:
Mn2+7(PO4)2(OH)8
Colour:
Orange-brown to dark brown
Lustre:
Vitreous, Pearly
Hardness:
4
Specific Gravity:
3.55
Crystal System:
Monoclinic
Name:
After Frederick George Waterhouse (1815-1898), first Director of the South Australian Museum (Adelaide), in recognition of his contribution to the preservation of the natural history of South Australia, and celebrates the continuing work of the Waterhouse Club in their support of the South Australian Musuem.

Classification of WaterhouseiteHide

Approved
Approval Year:
2004
8.BE.85

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1

Physical Properties of WaterhouseiteHide

Vitreous, Pearly
Transparency:
Transparent
Colour:
Orange-brown to dark brown
Streak:
Yellowish brown
Hardness:
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
Perfect
on (100), indistinct on (001)
Fracture:
Conchoidal
Density:
3.55 g/cm3 (Measured)    3.591 g/cm3 (Calculated)

Optical Data of WaterhouseiteHide

Type:
Biaxial (-)
RI values:
nα = 1.730 nβ = 1.738 nγ = 1.738
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
absent
Comments:
X pale brownish, Y brown-yellow, Z pale brownish, with absorption Z = X > Y
Optical orientation: XYZ = bac (pseudo-orthorhombic)

Chemical Properties of WaterhouseiteHide

Formula:
Mn2+7(PO4)2(OH)8
IMA Formula:
Mn7(PO4)2(OH)8

Crystallography of WaterhouseiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 11.364 Å, b = 5.57 Å, c = 10.455 Å
β = 96.61°
Ratio:
a:b:c = 2.04 : 1 : 1.877
Unit Cell V:
657.4 ų
Z:
2
Morphology:
{100} (dominant), {010}, {011} and {001}
Twinning:
All crystals are twinned on (100) by non-merohedry.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.436 (70)
3.621 (100)
3.069 (50)
2.941 (40)
2.890 (20)
2.842 (20)
2.780 (35)
2.718 (20)

Type Occurrence of WaterhouseiteHide

General Appearance of Type Material:
Divergent sprays of bladed crystals up to 1 mm in length and up to 20 µm in thickness.
Place of Conservation of Type Material:
South Australian Museum, Adelaide (SAM 28408 & 28409).

Synonyms of WaterhouseiteHide

Other Language Names for WaterhouseiteHide

Simplified Chinese:沃羟磷锰石
Traditional Chinese:沃羥磷錳石

Common AssociatesHide

Associated Minerals Based on Photo Data:
Rhodochrosite1 photo of Waterhouseite associated with Rhodochrosite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BE.05AugeliteAl2(PO4)(OH)3Mon. 2/m : B2/m
8.BE.10GrattarolaiteFe3+3(PO4)O3Trig. 3m : R3m
8.BE.15CornetiteCu3(PO4)(OH)3Orth. mmm (2/m 2/m 2/m) : Pbca
8.BE.20ClinoclaseCu3(AsO4)(OH)3Mon. 2/m : P21/b
8.BE.25ArhbariteCu2Mg(AsO4)(OH)3Tric. 1 : P1
8.BE.25GilmariteCu3(AsO4)(OH)3Tric.
8.BE.30AllactiteMn2+7(AsO4)2(OH)8Mon. 2/m : P21/b
8.BE.30FlinkiteMn2+2Mn3+(AsO4)(OH)4Orth.
8.BE.30RaadeiteMg7(PO4)2(OH)8Mon. 2/m
8.BE.30ArganditeMn7(VO4)2(OH)8Mon. 2/m : P21/m
8.BE.35Chlorophoenicite(Mn,Mg)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
8.BE.35Magnesiochlorophoenicite(Mg,Mn)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
8.BE.40Gerdtremmelite(Zn,Fe)(Al,Fe)2(AsO4)(OH)5Tric.
8.BE.45DixeniteCuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6Trig.
8.BE.45Hematolite(Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23Trig. 3 : R3
8.BE.45KraissliteZn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16Orth. 2 2 2 : C2 2 21
8.BE.45McgoverniteMn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21Trig. 3m (3 2/m)
8.BE.45Arakiite(Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23Mon.
8.BE.45Turtmannite(Mn,Mg)22.5Mg3-3x((V5+,As5+)O4)3(As3+O3)x(SiO4)3O5-5x(OH)20+xTrig.
8.BE.45CarlfrancisiteMn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42 Trig. 3m (3 2/m) : R3c
8.BE.50SynadelphiteMn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.BE.55Holdenite(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8Orth. mmm (2/m 2/m 2/m) : Ccca
8.BE.60KoliciteMn2+7Zn4(AsO4)2(SiO4)2(OH)8Orth. mmm (2/m 2/m 2/m) : Cmca
8.BE.65Sabelliite(Cu,Zn)2Zn(AsO4,SbO4)(OH)3Trig. 3 : P3
8.BE.70JarosewichiteMn2+3Mn3+(AsO4)(OH)6Orth. 2 2 2
8.BE.75TheisiteCu5Zn5(AsO4,SbO4)2(OH)14Orth.
8.BE.80CoparsiteCu4(AsO4,VO4)O2ClOrth.

Other InformationHide

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 WaterhouseiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pring, A., Kolitsch, U., Birch, W.D. (2005): Description and unique crystal structure of waterhouseite, a new hydroxy manganese phosphate from the Iron Monarch deposit, Middleback Ranges, South Australia. Canadian Mineralogist: 43: 1401-1410.

Internet Links for WaterhouseiteHide

Localities for WaterhouseiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia (TL)
 
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
A. Pring et al.: Canadian Mineralogist 43:1401-1410 (2005)
Mineral and/or Locality  
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