Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Anthoinite

Big Photo

Gifurwe Mines, Gifurwe sector, Cyeru Commune, Northern Province, Rwanda
© 2007, JGW

Formula:
WAlO
 
3
(OH)
 
3
 (?)
System:TriclinicColour:White (when free of iron)
Hardness:1
Name:For Raymond Anthoine (1884-?), Belgian mining engineer.
This page provides mineralogical data about Anthoinite.

Classification of Anthoinite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/E.02-50
Nickel-Strunz 10th (pending) edition ID:7.GB.35

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
B : With additional anions and/or H2O
Dana 8th edition ID:48.3.3.1

48 : ANHYDROUS MOLYBDATES AND TUNGSTATES
3 : Basic Anhydrous Molybdates and Tungstates
Hey's CIM Ref.:27.4.4

27 : Sulphites, Chromates, Molybdates and Tungstates
4 : Tungstates
mindat.org URL:http://www.mindat.org/min-252.html
Please feel free to link to this page.

Type Occurrence of Anthoinite

Type Locality:Mt Misobo Mine, Maniema, Democratic Republic of Congo (Zaïre)
General Appearance of Type Material:powdery to chalky masses, and pseudomorphs after large scheelite crystals; as platy crystals to a few mm
Place of Conservation of Type Material:Royal Museum of Central Africa, Tervuren, Belgium (No. 2.426)
Geological Setting of type material:Sn-W placers, W-bearing quartz veins
Associated Minerals at type locality:
WolframiteScheeliteQuartzFerberiteCassiterite

Occurrences of Anthoinite

Geological Setting:altered skarn (Kara Mine, Tasmania)

Physical Properties of Anthoinite

Lustre:Dull
Diaphaneity (Transparency):Translucent
Colour:White (when free of iron)
Streak:White
Hardness (Mohs):1
Cleavage:Perfect
On one direction.
Density (measured):4.78 - 4.87 g/cm3
Density (calculated):4.84 g/cm3

Crystallography of Anthoinite

Crystal System:Triclinic
Cell Parameters:a = 9.21Å, b = 11.36Å, c = 8.26Å
α = 94.75°, β = 90°, γ = 92.58°
Ratio:a:b:c = 0.811 : 1 : 0.727
Unit Cell Volume:V 860.36 ų (Calculated from Unit Cell)
Z:8
Morphology:Crystals platy, flattened on {010}. Commonly as powdery or chalky masses and as pseudomorphs after large Scheelite crystals.
X-Ray Powder Diffraction:
d-spacingIntensity
5.63 (100)
4.19 (83)
3.058 (71)
3.97 (69)
2.462 (61)
4.33 (37)
Comments:Material from Nyamulilo Mine, Uganda; sample shows preferred orientation

Optical Data of Anthoinite

Type:Biaxial
RI values: n = 1.81 - 1.82
Birefringence:noted under high magnification
Maximum Birefringence:δ = 0.000

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v
Comments:Measured 2V not determined.

Chemical Properties of Anthoinite

Formula:
WAlO
 
3
(OH)
 
3
 (?)
Essential elements:Al, O, W
All elements listed in formula:Al, H, O, W
Analytical Data:Analysis of material from the type locality
WO3 (73.23)
SiO2 (0.73)
Al2O3 (16.41)
Fe2O3 (0.69)
CaO (0.25)
H2O (8.70)

sum 100.01 wt.-%
Empirical Formula:
W
 
1.00
Al
 
0.97
O
 
2.90
(OH)
 
3.10

Relationship of Anthoinite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.GB.05Lindgrenite
Cu
 
3
[OH|MoO
 
4
]
 
2
7.GB.10Szenicsite
Cu
 
3
(MoO
 
4
)(OH)
 
4
7.GB.15Cuprotungstite
Cu
 
2
[(OH)
 
2
|WO
 
4
]
7.GB.15UM1999-38-WO:CrV
V, Cr, W, O, H [V:Cr:W ratio about· 2:1:3]
7.GB.20Phyllotungstite
Ca
 
x
[(W,Fe)(O,OH)
 
3
]·yH
 
2
O
7.GB.25Rankachite
(V
4+
 
,V
5+
 
)(W
6+
 
,Fe
3+
 
)
 
2
O
 
8
(OH)•(Ca
 
x
H
 
2
O
 
y
) with x ~ 0.5, y ~ 2.
7.GB.30Ferrimolybdite
Fe
 
2
[MoO
 
4
]
 
3
 · nH
 
2
O
7.GB.35Mpororoite
AlWO
 
3
(OH)
 
3
·2H
 
2
O
7.GB.40Obradovicite
H
 
4
(K,Na)CuFe
 
2
AsO
 
4
(MoO
 
4
)
 
5
·12H
 
2
O
7.GB.45Mendozavilite
Na(Ca,Mg)
 
2
[Fe
 
6
(PO
 
4
)
 
2
(PMo
 
11
O
 
39
)(OH,Cl)
 
10
]·33H
 
2
O
7.GB.45Paramendozavilite
NaAl
 
4
[Fe
 
7
(PO
 
4
)
 
5
(PMo
 
12
O
 
40
)(OH)
 
16
]·56H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
27.4.1Cuprotungstite
Cu
 
2
[(OH)
 
2
|WO
 
4
]
27.4.2Scheelite
Ca[WO
 
4
]
27.4.5Mpororoite
AlWO
 
3
(OH)
 
3
·2H
 
2
O
27.4.6Yttrotungstite-(Y)
YW
 
2
O
 
6
(OH)
 
3
27.4.7Yttrotungstite-(Ce)
(Ce,Nd,Y)W
 
2
O
 
6
(OH)
 
3
27.4.8Stolzite
Pb[WO
 
4
]
27.4.9Raspite
PbWO
 
4
27.4.10Russellite
(BiO)
 
2
[WO
 
4
]
27.4.11Pinalite
Pb
 
3
WO
 
5
Cl
 
2
27.4.12Uranotungstite
(Fe
2+
 
,Ba,Pb)(UO
 
2
)
 
2
[(OH)
 
4
|WO
 
4
] · 12H
 
2
O
27.4.13Hübnerite
MnWO
 
4
27.4.14Ferberite
FeWO
 
4
27.4.15Wolframite
(Fe
2+
 
)WO
 
4
 
 
to (Mn
2+
 
)WO
 
4
27.4.16Ferritungstite
(W,Fe
3+
 
)(O,OH)
 
3
27.4.17Phyllotungstite
Ca
 
x
[(W,Fe)(O,OH)
 
3
]·yH
 
2
O
27.4.18Qitianlingite
(Fe,Mn)
 
2
(Nb,Ta)
 
2
WO
 
10

Other Names for Anthoinite

Other Languages:
German:Anthoinit
Spanish:Anthoinita

Other Information

Other Information:Slowly attacked by HCl and HNO3; readily soluble in strong KOH solution.

Forms pseudomorphs after Scheelite crystals.
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 Anthoinite

Reference List:Varlamoff (1947) Société géologique de Belgique, Liége, Bulletin: 70: B153.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1097-1098.

Niggli, E. and Jäger, E. (1957): Untersuchungen an Anthoinit. Neues Jahrbuch für Mineralogie, Abhandlungen 91, 35-40 (in German).

Sahama, T. G., von Knorring, O. and Lehtinen, M. (1970): New data for anthoinite. Bulletin of the Geological Society of Finland 42, 95-99.

Sahama, T. G. (1981): The secondary tungsten minerals, a review. Mineralogical Record 12, 81-87.

Matsubara, S., Kato, A. and Nagashima, K. (1984): Mpororoite and anthoinite from the Kara mine, Tasmania. Mineralogical Magazine 48, 397-400.

Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (1997) Handbook of Mineralogy, Volume III. Halides, Hydroxides, Oxides. Mineral Data Publishing, Tucson, AZ, 628pp.: 17.

Internet Links for Anthoinite

Search Engines:
  • Look for Anthoinite on Google
  • Look for Anthoinite images on Google
    • External Links:
  • Look for Anthoinite on Webmineral
  • Look for Anthoinite on Athena Mineralogy
  • Look for Anthoinite on Wikipedia
  • Look for Anthoinite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Anthoinite in the Natural History Museum (London) online catalogue
  • Anthoinite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy from David K Joyce minerals
  • High-end worldwide specimens & outstanding customer service
  • Buy Minerals and Crystals from Crystalarium.com
  • rare and unusual minerals mainly crystallized
  • Search for - Anthoinite - on e-Rocks Mineral Sales & Auctions
  • Lapis Mineral Magazin
  • SpiriferMinerals.com - high quality specimens
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • The Arkenstone - Fine Minerals
  • Wilensky Fine Minerals
  • Buy Fine Minerals from mineralsweb.com
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Anthoinite

    Hide Locality List
    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
     
    • Tasmania
      • Hampshire district
        • Kara Mines
    		Whitehead, 1990; Ralph Bottril 6/10/2005.
    Canada
     
    • Yukon Territory
      • Mayo Mining District
        • Mayo
          • Kalzas Mt
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3 (1997), 17
    Democratic Republic of Congo (Zaïre)
     
    • Kivu
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3 (1997), 17
    • Maniema
    Varlamoff, N (1947): Anthoinite, nouveau tungstate hydraté d'alumine. Annales de la Societé géologique de Belgique, 70, B153-B166; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1098.
    Rwanda
     
    J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3 (1997), 17
    • Northern Province
      • Burera district
    		Lapis 16(9), 12 (1991)
      • Cyeru Commune
        • Gifurwe sector
    		J. W. Anthony et al.: "Handbook of Mineralogy", Vol.3 (1997), 11; Geol. Belg. 11 (2008) 251-258.
    Uganda
     
    • Kabale District
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3, (1997), 17
    • Kigezi District
    		J. W. Anthony et al.: "Handbook of Mineralogy", Vol.3 (1997), 11
    J. W. Anthony et al.: "Handbook of Mineralogy", Vol.3 (1997), 11
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    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: 6th Nov 2009 11:51:31