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Wadsleyite

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Formula:
(Mg,Fe2+)2(SiO4)
System:
Orthorhombic
Name:
Named in honor of David Arthur Wadsley (1918-1969), Australian solid-state chemist and crystallographer, former research scientist of the Commonwealth Scientific and Industrial Research Organization (CSIRO), Australia, for his significant contributions to crystallography, including the concept of crystallographic shearing.
Polymorph of:
Olivine Group.

The orthorhombic, high-pressure polymorph of Ringwoodite and Forsterite (a member of the Olivine group of minerals). Initially found in the Peace River meteroite (from Alberta, Canada), it is thought to be formed from the transformation of Olivine during an extraterrestrial shock event (eg meteorite impact). It is known to be stable in the transition zone of the Earth's upper mantle (between 400 and 525km depth).

Recent lab experiments, published in 2009, led by Thomas Ahrens at the California Institute of Technology (Caltech) have been able to replicate the formation of Wadsleyite by launching a high-velocity tantalum projectile at a sample containing magnesium oxide and silicon dioxide (Quartz)

Classification of Wadsleyite

Approved 1982
9.BE.02

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
51.3.4.1

51 : NESOSILICATES Insular SiO4 Groups Only
3 : Insular SiO4 Groups Only with all cations in octahedral [6] coordination
14.21.3

14 : Silicates not Containing Aluminum
21 : Silicates of Fe and Mg
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Type Occurrence of Wadsleyite

Year of Discovery:
1966

Physical Properties of Wadsleyite

Diaphaneity (Transparency):
Transparent

Crystallography of Wadsleyite

Crystal System:
Orthorhombic
Cell Parameters:
a = 5.7Å, b = 11.71Å, c = 8.24Å
Ratio:
a:b:c = 0.487 : 1 : 0.704
Unit Cell Volume:
V 550.00 ų (Calculated from Unit Cell)

Optical Data of Wadsleyite

Type:
Biaxial
Dispersion:
r > v

Chemical Properties of Wadsleyite

Formula:
(Mg,Fe2+)2(SiO4)
Essential elements:
All elements listed in formula:
Common Impurities:
Cr,Mn,Ni,Ca,Zn

Relationship of Wadsleyite to other Species

9.BE.05HennomartiniteSrMn23+(Si2O7)(OH)2 · H2O
9.BE.05LawsoniteCaAl2(Si2O7)(OH)2 · H2O
9.BE.05NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
9.BE.05ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
9.BE.07IlvaiteCaFe22+Fe3+(Si2O7)O(OH)
9.BE.07ManganilvaiteCa(Mn2+,Fe2+)2Fe3+(Si2O7)O(OH)
9.BE.10SuoluniteCa2(H2Si2O7) · H2O
9.BE.12JaffeiteCa6(Si2O7)(OH)6
9.BE.15FresnoiteBa2Ti(Si2O7)O
9.BE.17BaghdaditeCa3(Zr,Ti)(Si2O7)O2
9.BE.17BurpaliteNa2CaZr(Si2O7)F2
9.BE.17CuspidineCa4(Si2O7)(F,OH)2
9.BE.17Hiortdahlite(Ca,Na)3(Zr,Ti)(Si2O7)(O,OH,F)2
9.BE.17Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2
9.BE.17Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2
9.BE.17Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2
9.BE.17NormanditeNaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF
9.BE.17WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
9.BE.17Hiortdahlite INa4Ca8Zr2(Nb,Mn,Ti,Fe,Mg,Al)2(Si2O7)4O3F5
9.BE.17MarianoiteNa2Ca4(Nb,Zr)2(Si2O7)2(O,F)4
9.BE.20Mosandrite(◻,Ca,Na)3(Ca,REE)4Ti(Si2O7)2[H2O,OH,F]4 · H2O
9.BE.20Nacareniobsite-(Ce)Na3Ca3(Ce,La,Nd)Nb(Si2O7)2OF3
9.BE.22GötzeniteNaCa4(Ca,Na)2(Si2O7)2OF3
9.BE.22HainiteNa4Ca8(Ti,Zr,Mn)3(Si2O7)4F4
9.BE.22Rosenbuschite(Ca,Na)3(Zr,Ti)(Si2O7)OF
9.BE.22Kochite(Na,Ca)3Ca2(Mn,Ca)ZrTi(Si2O7)2(F,O)4
9.BE.23DovyreniteCa6Zr(Si2O7)2(OH)4
9.BE.25Barytolamprophyllite(Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F)
9.BE.25EricssoniteBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25Lamprophyllite(Sr,K,Ba)2(Na,Ti,Mn2+,Fe3+)4Ti2(Si2O7)2O(O,OH,F)
9.BE.25Ericssonite-2OBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25SeidozeriteNa8Mn22+Zr3Ti3(Si2O7)4O4F4
9.BE.25NabalamprophylliteNa3(Ba,Na)2Ti3(Si2O7)2O2(OH,F)2
9.BE.25Grenmarite(Na,Ca)4(Mn,Na)(Zr,Mn)2(Zr,Ti)(Si2O7)2(O,F)4
9.BE.25SchülleriteBa2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4
9.BE.25LileyiteBa2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2
9.BE.27MurmaniteNa2Ti2(Si2O7)O2 · 2H2O
9.BE.30EpistoliteNa2(Nb,Ti)2(Si2O7)O2 · nH2O
9.BE.32LomonosoviteNa5Ti2(Si2O7)(PO4)O2
9.BE.35VuonnemiteNa11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)
9.BE.37SoboleviteNa13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3
9.BE.40InneliteNa2CaBa4Ti3(Si2O7)2(SO4)2O4
9.BE.40PhosphoinneliteNa3Ba4Ti3(Si2O7)2(PO4,SO4)2O2F
9.BE.42YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)
9.BE.45QuadruphiteNa14Ca2Ti4(Si2O7)2(PO4)2O2F
9.BE.47PolyphiteNa5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2
9.BE.50BornemaniteNa6BaTi2Nb(Si2O7)2(PO4)O2(OH)F
9.BE.50ShkatulkaliteNa10Mn2+Ti3Nb3(Si2O7)6(OH)2F · 12H2O
9.BE.55BafertisiteBa(Fe2+,Mn2+)2Ti(Si2O7)O(F,OH)2
9.BE.55HejtmaniteBa(Mn2+,Fe2+)2Ti(Si2O7)O(OH,F)
9.BE.55Bykovaite(Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2O
9.BE.55Nechelyustovite(Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2O
9.BE.60Delindeite(Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O
9.BE.65BusseniteNa2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3F
9.BE.67JinshajiangiteBaNaFe42+Ti2(Si2O7)2O2(OH)2F
9.BE.67PerraultiteBaNaMn42+Ti2 (Si2O7)2O2(OH)2F
9.BE.67SurkhobiteNaCaBa2Mn8Ti4(Si2O7)4O5F5
9.BE.70Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
9.BE.70Perrierite-(Ce)Ce4MgFe23+Ti2(Si2O7)2O8
9.BE.70Strontiochevkinite(Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8
9.BE.70Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
9.BE.70Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
9.BE.70RengeiteSr4ZrTi4(Si2O7)2O8
9.BE.70MatsubaraiteSr4Ti5(Si2O7)2O8
9.BE.70Dingdaohengite-(Ce)(Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8
9.BE.70Maoniupingite-(Ce)(Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8
9.BE.70Perrierite-(La)(La,Ce,Ca)4(Fe,Mn2+,Mg)Fe23+(Ti,Fe3+)2(Si2O7)2O8
9.BE.70UKI-2008-(SiO:SrTiZr)Sr4ZrTi4(Si2O7)2O8
9.BE.70Hezuolinite(Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8
9.BE.72FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
9.BE.75BelkoviteBa3(Nb,Ti)6(Si2O7)2O12
9.BE.77NasonitePb6Ca4(Si2O7)3Cl2
9.BE.80KentrolitePb2Mn23+(Si2O7)O2
9.BE.80MelanotekitePb2Fe23+(Si2O7)O2
9.BE.82TilleyiteCa5(Si2O7)(CO3)2
9.BE.85KillalaiteCa6.4(H0.6Si2O7)2(OH)2
9.BE.87Stavelotite-(La)(La,Nd,Ca)3Mn32+Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30
9.BE.90Biraite-(Ce)Ce2Fe2+(Si2O7)(CO3)
9.BE.92Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)
9.BE.95BatisiviteBaV83+Ti6(Si2O7)O22
14.21.1Olivine(Mg,Fe2+)2SiO4
14.21.2Ringwoodite(Mg,Fe2+)2SiO4
14.21.4ClinoferrosiliteFe2+SiO3
14.21.5Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.6Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.7 Magnesiocummingtonite
14.21.8Grunerite☐{Fe22+}{Fe52+}(Si8O22)(OH)2
14.21.9Minnesotaite(Fe,Mg)3(Si4O10)(OH)2
14.21.10Chesterite(Mg,Fe)17Si20O54(OH)6
14.21.11Jimthompsonite(Mg,Fe)5Si6O16(OH)2
14.21.12Clinojimthompsonite(Mg,Fe)5Si6O16(OH)2
14.21.13MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
14.21.14Balangeroite(Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40

Other Names for Wadsleyite

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 Wadsleyite

Reference List:
PRICE, R.D., PUTNIS, A., AGRELL, S.O. & SMITH, D.G.W. (1983): Wadsleyite, natural bbb-(Mg,Fe)2SiO4 from the Peace River meteorite. Canadian Mineralogist 21, 29-35.
KUDOH, Y., INOUE, T. & ARASHI, H. (1996): Structure and crystal chemistry of hydrous wadsleyite Mg1.75SiH0.5O4: possible hydrous magnesium silicate in the mantle transition zone. Physics and Chemistry of Minerals 23, 461-469.
SMYTH, J.R., KAWAMOTO, T., JACOBSEN, S.D., SWOPE, R.J., HERVIG, R.L. & HOLLOWAY, J.R. (1997): Crystal structure of monoclinic hydrous wadsleyite β-(Mg,Fe)2SiO4. American Mineralogist 82, 270-275.
Sinogeikin, S.V., Katsura, T., and Bass, J.D. (1998) Sound velocities and elastic properties of Fe-bearing wadsleyite and ringwoodite. Journal of Geophysical Research: 103: 20819-20825.
Demouchy, S., Deloule, E., Frost, D.J., and Keppler, H. (2005) Pressure and temperature-dependence of water solubility in Fe-free wadsleyite. American Mineralogist: 90: 1084-1091.
Oliver Tschauner, Paul D. Asimow et al. Ultrafast growth of wadsleyite in shock-produced melts and its implications for early solar system impact processes PNAS 2009 : 0905751106v1-pnas.0905751106.

Internet Links for Wadsleyite

Localities for Wadsleyite

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.
Australia
 
  • Queensland
    • Charters Towers Region
      • South Gregory
        • Tenham Station
Lunar and Planetary Science XXXIV (2003)
Canada (TL)
 
  • Alberta
    • Peace River
PRICE, R.D., PUTNIS, A., AGRELL, S.O. & SMITH, D.G.W. (1983): Wadsleyite, natural bbb-(Mg,Fe)2SiO4 from the Peace River meteorite. Canadian Mineralogist 21, 29-35.
China
 
  • Anhui Province
    • Anqing Prefecture
      • Qianshan Co.
Am. Min. , V 84, pp. 564-569, 1999.
    • Bozhou Prefecture
      • Qiaocheng District
        • Xiaoyanzhuang
Kuiren Wang, Ji'an Hong, and Meyer, H.O.A. (1995): Acta Mineralogica Sinica 15(1), 9-14
  • Jiangsu Province
    • Taizhou Prefecture
      • Gaogang District
        • Sixiangkou
Chen, M., El Goresy, A. & Gillet, P. Ringwoodite lamellae in olivine: clues to olivine–ringwoodite phase transition mechanisms in shocked meteorites and subducting slabs. Proc. Natl Acad. Sci. USA 101, 15033–15037 (2004)
France
 
  • Champagne-Ardenne
    • Haute-Marne
      • Chassigny
Malavergne, V., Guyot, F., Benzerara, K., & Martinez, I. (2001). Description of new shock‐induced phases in the Shergotty, Zagami, Nakhla and Chassigny meteorites. Meteoritics & Planetary Science, 36(10), 1297-1305.
Germany
 
  • Hesse
    • Richelsdorf District
      • Süss
        • Richelsdorf Smelter
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1992
Nigeria
 
  • Yobe State
    • Bogga Dingare
Weisberg, M.K. & Kimura, M. (2010). Petrology and Raman spectroscopy of high pressure phases in the Gujba CB chondrite and the shock history of the CB parent body. Meteoritics & Planetary Science Volume 45, Issue 5, pages 873–884. (May 2010)
Oman
 
  • Dhofar Province (Al Janubiyah Province)
D.D. Badjukov et al. , Lunar and Planetary Science, XXXVI (2005), 1684.pdf
Mineral and/or Locality  
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