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Bamfordite

Formula:
Fe
3+
 
Mo
 
2
O
 
6
(OH)
 
3
·H
 
2
O
System:TriclinicColour:Apple-green
Lustre:Vitreous, EarthyHardness:2 - 3
Name:After its locality.
This page provides mineralogical data about Bamfordite.

Classification of Bamfordite

IMA status:Approved 1996
Strunz 8th edition ID:4/E.03-40
Nickel-Strunz 10th (pending) edition ID:4.FK.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
K : Hydroxides with H2O +- (OH); chains of edge-sharing octahedra
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Type Occurrence of Bamfordite

Type Locality:Bamford Hill W-Mo-Bi deposit, Bamford, Queensland, Australia
General Appearance of Type Material:Apple green with yellowish tint
Place of Conservation of Type Material:Museum of Victoria
Geological Setting of type material:Oxidation zone of greisen

Physical Properties of Bamfordite

Lustre:Vitreous, Earthy
Colour:Apple-green
Streak:greenish yellow
Hardness (Mohs):2 - 3
Cleavage:Distinct/Good
(100)
Density (measured):3.62 g/cm3

Crystallography of Bamfordite

Crystal System:Triclinic

Optical Data of Bamfordite

Type:Biaxial (-)
RI values: nα = 1.910 nβ = 2.030 nγ = 2.110
2V:Measured: 90° , Calculated: 74°
Maximum Birefringence:δ = 0.200

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r < v

Chemical Properties of Bamfordite

Formula:
Fe
3+
 
Mo
 
2
O
 
6
(OH)
 
3
·H
 
2
O
Essential elements:Fe, H, Mo, O
All elements listed in formula:Fe, H, Mo, O

Other Names for Bamfordite

Synonyms:
IMA1996-059Molybdoferrite
Other Languages:
German:Bamfordit
Russian:Бамфордит
Spanish:Bamfordita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Bamfordite

Reference List:Birch, William D.; Pring, Allan; McBriar, E. Maude; Gatehouse, Bryan M.; and McCammon, Catherine A. (1998): Bamfordite, Fe3+Mo2O6(OH)3.H2O, a new hydrated iron molybdenum oxyhydroxide from Queensland, Australia: Description and crystal chemistry: Am. Mineral. 83, 172-177.

Internet Links for Bamfordite

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  • Raman and XRD data at RRUFF project
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    Localities for Bamfordite

    The 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. ? 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.
    Australia
     
    • Queensland
      • Bamford
    Birch, William D.; Pring, Allan; McBriar, E. Maude; Gatehouse, Bryan M.; and McCammon, Catherine A. (1998): Bamfordite, Fe3+Mo2O6(OH)3.H2O, a new hydrated iron molybdenum oxyhydroxide from Queensland, Australia: Description and crystal chemistry: Am. Mineral. 83, 172-177.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 10th Nov 2009 10:09:41