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Whiteite-(MnMnMg)

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Formula:
MnMnMg2Al2(PO4)4(OH)2 · 8H2O
Colour:
reddish orange
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
2.61
Crystal System:
Monoclinic
Type locality of the approved species: Eastern side of the Iron Monarch Quarry (130 m level), Iron Knob, South Australia, Australia


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Classification of Whiteite-(MnMnMg)Hide

Approved
Approval Year:
2016

Pronounciation of Whiteite-(MnMnMg)Hide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Whiteite-(MnMnMg)Hide

Vitreous
Transparency:
Translucent
Colour:
reddish orange
Streak:
pale orange
Hardness:
Tenacity:
Brittle
Cleavage:
Distinct/Good
parallel to {001}
Fracture:
Irregular/Uneven
Density:
2.61(4) g/cm3 (Measured)    

Optical Data of Whiteite-(MnMnMg)Hide

Type:
Uniaxial (-)
RI values:
nα = 1.582(2) nβ = 1.586(2) nγ = 1.613(2)
2V:
Calculated: 74.5°
Max Birefringence:
δ = 0.031
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic
Comments:
Uniaxial is incompatible with RIs given.

Chemical Properties of Whiteite-(MnMnMg)Hide

Formula:
MnMnMg2Al2(PO4)4(OH)2 · 8H2O
IMA Formula:
Mn2+Mn2+Mg2Al2(PO4)4(OH)2 · 8H2O

Crystallography of Whiteite-(MnMnMg)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Setting:
P2/a
Cell Parameters:
a = 15.036(2) Å, b = 6.9408(5) Å, c = 9.9431(9) Å
β = 110.827(8)°
Ratio:
a:b:c = 2.166 : 1 : 1.433
Unit Cell V:
969.88 ų (Calculated from Unit Cell)
Z:
2

Type Occurrence of Whiteite-(MnMnMg)Hide

General Appearance of Type Material:
single unterminated prismatic crystal
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the South Australian Museum, North Terrace, Adelaide, South Australia, Australia, registration number G32398
Associated Minerals at Type Locality:

Synonyms of Whiteite-(MnMnMg)Hide

Relationship of Whiteite-(MnMnMg) to other SpeciesHide

Other Members of this group:
Rittmannite{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2OMon.
Whiteite-(CaFeMg){Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
Whiteite-(CaMgMg)CaMg3Al2(PO4)4(OH)2·8H2OMon. 2/m : P2/b
Whiteite-(CaMnMg){Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m
Whiteite-(CaMnMn){Ca}{Mn2+}{Mn2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Whiteite-(MnFeMg){(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b

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 Whiteite-(MnMnMg)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Baijot, M., Hatert, F., Philippo, S. (2012) Mineralogy and geochemistry of phosphates and silicates in the Sapucaia pegmatite, Minas Gerais, Brazil: Genetic implications. The Canadian Mineralogist: 50: 1531-1554.
Baijot, M., Hatert, F., Dal Rio, F., Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. The Canadian Mineralogist: 52: 373-397.
Elliott, P. (2016) Whiteite- (MnMnMg), IMA 2015-092. CNMNC Newsletter No. 29, February 2016, 202. Mineralogical Magazine: 80: 199–205.
Elliott, P., & Willis, A. C. (2019). Whiteite-(mnmnmg), a New Jahnsite-Group Mineral from Iron Monarch, South Australia: Description and Crystal Structure. The Canadian Mineralogist, 57(2), 215-223.

Internet Links for Whiteite-(MnMnMg)Hide

Localities for Whiteite-(MnMnMg)Hide

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
Elliott, P., & Willis, A. C. (2019). Whiteite-(mnmnmg), a New Jahnsite-Group Mineral from Iron Monarch, South Australia: Description and Crystal Structure. The Canadian Mineralogist, 57(2), 215-223.; Elliott, P. (2016) Whiteite- (MnMnMg), IMA 2015-092. CNMNC Newsletter No. 29, February 2016, 202. Mineralogical Magazine: 80: 199–205.
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
    • Galiléia
      • Sapucaia do Norte
Baijot, M., Hatert, F. & Philippo, S. (2012): Mineralogy and geochemistry of phosphates and silicates in the Sapucaia pegmatite, Minas Gerais, Brazil: Genetic implications. Canadian Mineralogist. 50, 1531-1554
 
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