Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Wakefieldite-(Y)

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Y(VO4)
System:
Tetragonal
Colour:
Pale tan, yellow, canary ...
Hardness:
5
Member of:
Name:
Named for the town of Wakefield near the type locality, the Evans-Lou pegmatite.

Classification of Wakefieldite-(Y)

Approved 1969
8.AD.35

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
38.4.11.3

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
21.3.7

21 : Vanadates (and vanadates with arsenate or phosphate)
3 : Vanadates of Al, rare earths, Pb, V or Bi
mindat.org URL:
http://www.mindat.org/min-4234.html
Please feel free to link to this page.

Type Occurrence of Wakefieldite-(Y)

General Appearance of Type Material:
A pale tan pulverulent masses filling cavities in quartz.
Year of Discovery:
1968
Geological Setting of Type Material:
A zoned granite pegmatite
Associated Minerals at Type Locality:

Physical Properties of Wakefieldite-(Y)

Colour:
Pale tan, yellow, canary yellow, yellow-brown,
Hardness (Mohs):
5
Comment:
Approximately equal to that of apatite.
Density:
4.25 g/cm3 (Calculated)

Crystallography of Wakefieldite-(Y)

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I41/amd
Cell Parameters:
a = 7.105(3) Å, c = 6.20(1) Å
Ratio:
a:c = 1 : 0.873
Unit Cell Volume:
V 312.98 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.74 (17)
3.56 (100)
2.66 (50)
2.51 (30)
2.21 (25)
1.824 (75)
1.774 (20)

Optical Data of Wakefieldite-(Y)

Type:
Uniaxial (+)
RI values:
nω = 2.000 nε = 2.140
Max Birefringence:
δ = 0.140
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of Wakefieldite-(Y)

Formula:
Y(VO4)
Essential elements:
All elements listed in formula:

Relationship of Wakefieldite-(Y) to other Species

Member of:
Other Members of Group:
8.AD.05NahpoiteNa2HPO4
8.AD.10MonetiteCa(HPO4)
8.AD.10WeiliteCa(HAsO4)
8.AD.10ŠvenekiteCa(H2AsO4)2
8.AD.15Archerite(K,NH4)(H2PO4)
8.AD.15Biphosphammite(NH4,K)(H2PO4)
8.AD.20Phosphammite(NH4)2(HPO4)
8.AD.25BuchwalditeNaCa(PO4)
8.AD.30SchultenitePb(HAsO4)
8.AD.35Chernovite-(Y)Y(AsO4)
8.AD.35DreyeriteBi(VO4)
8.AD.35Wakefieldite-(Ce)Ce(VO4)
8.AD.35Xenotime-(Y)Y(PO4)
8.AD.35PretuliteSc(PO4)
8.AD.35Xenotime-(Yb)(Yb,Y,HREE)(PO4)
8.AD.35Wakefieldite-(La)La(VO4)
8.AD.40PucheriteBi(VO4)
8.AD.45XimengiteBi(PO4)
8.AD.50Gasparite-(Ce)(Ce,REE)(AsO4)
8.AD.50Monazite-(Ce)(Ce,La,Nd,Th)(PO4)
8.AD.50Monazite-(La)(La,Ce,Nd)(PO4)
8.AD.50Monazite-(Nd)(Nd,La,Ce)(PO4)
8.AD.50RooseveltiteBi(AsO4)
8.AD.50Cheralite(Ca,Ce)(Th,Ce)(PO4)2
8.AD.50Monazite-(Sm)(Sm,Gd,Ce,Th)(PO4)
8.AD.50UM2005-35-VO:CaFePSiTh(Th,Ca)(VO4,SiO4,PO4)
8.AD.55TetrarooseveltiteBi(AsO4)
8.AD.60Chursinite(Hg2+)0.5Hg2+(AsO4)
8.AD.65ClinobisvaniteBi(VO4)
21.3.1SteigeriteAl(VO4) · 3H2O
21.3.2Alvanite(Zn,Ni)Al4(V5+O3)2(OH)12 · 2H2O
21.3.3MetaschoderiteAl2(PO4)(VO4) · 6H2O
21.3.4SchoderiteAl2(PO4)(VO4) · 8H2O
21.3.5SatpaeviteAl12V24+V65+O37 · 30H2O
21.3.6VanaliteNaAl8V10O38 · 30H2O
21.3.7Wakefieldite-(Ce)Ce(VO4)
21.3.8ChervetitePb2(V2O7)
21.3.9MottramitePbCu(VO4)(OH)
21.3.10DescloizitePb(Zn,Cu)(VO4)(OH)
21.3.11ClinobisvaniteBi(VO4)
21.3.11DreyeriteBi(VO4)
21.3.11PucheriteBi(VO4)
21.3.12SchumacheriteBi3(VO4)2O(OH)
21.3.13NamibiteCu(BiO)2(VO4)(OH)
21.3.14PottsiteHPbBi(VO4)2 · 2H2O
21.3.15Duhamelite(Pb,Bi,Ca)Cu(VO4)(OH,O)

Other Names for Wakefieldite-(Y)

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 Wakefieldite-(Y)

Reference List:
HOGARTH, D.D. & MILES, N.M. (1969): Wakefieldite, natural YVO4. Canadian Mineralogist 10, 136 (abstr.). Abstracted in: American Mineralogist (1970): 55: 1446.
MILES, N.M., HOGARTH, D.D. & RUSSEL, D.S. (1971): Wakefieldite, yttrium vanadate, a new mineral from Quebec. American Mineralogist 56, 395-410.
HOGARTH, D.D. (1972): The Evans-Lou pegmatite, Quebec: a unique yttrium B niobium B bismuth B vanadium mineral assemblage. Mineralogical Record 3, 69-77.
Cadoni, M., Ciriotti, M.E., Ferraris, G. (2011): Wakefieldite-(Y) from Montaldo di Mondovì (Italy): new data and crystal structure. Rendiconti Scienze Fisiche e Naturali Accademia Lincei, 22, 307–314.

Internet Links for Wakefieldite-(Y)

Localities for Wakefieldite-(Y)

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 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.
Canada (TL)
 
  • Québec
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
        • Val-des-Monts
          • Lac Saint-Pierre (Wakefield Lake)
Miles, N. M., Hogarth, D.D. & Russell, D.S. (1971): Wakefieldite, yttrium vanadate, a new mineral from Quebec. American Mineralogist. 56, 395-410
Italy
 
  • Piedmont
    • Cuneo Province
      • Corsaglia Valley
        • Montaldo di Mondovì
          • Borgata Oberti
            • Frazze and Rocconi localities
Cadoni, M., Ciriotti, M.E., Ferraris, G. (2011): Wakefieldite-(Y) from Montaldo di Mondovì (Italy): new data and crystal structure. Rendiconti Scienze Fisiche e Naturali Accademia Lincei, 22, 307–314.
USA
 
  • Arizona
    • Maricopa Co.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 417.
  • Michigan
    • Baraga Co.
      • Huron River
Rocks & Minerals 82:298-308
  • New Mexico
    • Sierra Co.
      • Paramount Canyon
Minerals of New Mexico 3rd ed.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 28, 2015 04:33:29 Page generated: July 27, 2015 04:24:16