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Ringwoodite

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Formula:
(Mg,Fe2+)2SiO4
Colour:
Bluish- to smoke- gray, purple, colourless
Specific Gravity:
3.9 (Calculated)
Crystal System:
Isometric
Name:
Named in 1969 by R.A. Binns, R.J. Davis, and S.J.B. Reed in honor of Alfred Edward ("Ted") Ringwood (19 April 1930, Melbourne, Australia – 12 November 1993), noted geochemist and Professor of Geology, Australian National University, Canberra, who predicted the mineral based on laboratory studies. He was the recipient of numerous awards including the Bowie Medal, the Wollaston Medal and the H.H. Hess Medal.
Polymorph of:
Olivine Group.
Mg analogue of ahrensite.

The isometric polymorph of Wadsleyite and Forsterite.

Experiments show that ringwoodite may incorporate essential amounts of Na, that enters the tetrahedral sites. Na prefers ringwoodite more than bridgmanite. Thus, ringwoodite is suspected for being an important sink for Na in deep transition mantle zone (Bindi et al., 2016).


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Classification of RingwooditeHide

Approved
Approval Year:
1968
9.AC.15

9 : SILICATES (Germanates)
A : Nesosilicates
C : Nesosilicates without additional anions; cations in octahedral [6] coordination
51.3.3.1

51 : NESOSILICATES Insular SiO4 Groups Only
3 : Insular SiO4 Groups Only with all cations in octahedral [6] coordination
14.21.2

14 : Silicates not Containing Aluminum
21 : Silicates of Fe and Mg

Pronounciation of RingwooditeHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of RingwooditeHide

Transparency:
Translucent
Colour:
Bluish- to smoke- gray, purple, colourless
Density:
3.9 g/cm3 (Calculated)

Optical Data of RingwooditeHide

Type:
Isotropic
RI values:
n = 1.768
Max Birefringence:
δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:
High

Chemical Properties of RingwooditeHide

Formula:
(Mg,Fe2+)2SiO4
IMA Formula:
Mg2SiO4
Common Impurities:
Ti,Mn,Ca

Chemical AnalysisHide

Oxide wt%:
 1
SiO238.9 %
FeO23.4 %
MgO37.0 %
Total:99.3 %
Empirical formulas:
Sample IDEmpirical Formula
1(Mg0.74Fe0.26)2SiO4
Sample references:
IDLocalityReference
1Tenham meteorite, Tenham Station, Windorah, Barcoo Shire, Queensland, AustraliaBinns R A, Davis R J, Reed S J B (1969) Ringwoodite, natural (Mg,Fe)2SiO4 spinel in the Tenham meteorite. Nature 221, 943-944

Crystallography of RingwooditeHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Ia3d
Cell Parameters:
a = 8.113 Å
Unit Cell V:
534.00 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Rounded grains, to 100 μm, or massive

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.447 (100)
1.434 (60)
2.028 (40)
2.872 (20)
1.560 (20)
1.0559 (10)
0.8283 (10)

Type Occurrence of RingwooditeHide

Place of Conservation of Type Material:
The Natural History Museum, London, England, 1935,792.
Geological Setting of Type Material:
Tenham meteorite
Associated Minerals at Type Locality:
Reference:
Binns R A, Davis R J, Reed S J B (1969) Ringwoodite, natural (Mg,Fe)2SiO4 spinel in the Tenham meteorite. Nature 221, 943-944

Synonyms of RingwooditeHide

Other Language Names for RingwooditeHide

German:Ringwoodit
Simplified Chinese:林伍德石
Spanish:Ringwoodita
Traditional Chinese:林伍德石

Related Minerals - Nickel-Strunz GroupingHide

9.AC.AhrensiteFe2SiO4Iso. m3m (4/m 3 2/m)
9.AC.05FayaliteFe2+2SiO4Orth.
9.AC.05ForsteriteMg2SiO4Orth. mmm (2/m 2/m 2/m)
9.AC.05GlaucochroiteCaMn2+SiO4Orth.
9.AC.05KirschsteiniteCaFe2+SiO4Orth. mmm (2/m 2/m 2/m) : Pnma
9.AC.05LaihuniteFe2+Fe3+2(SiO4)2Mon.
9.AC.05Liebenbergite(Ni,Mg)2SiO4Orth.
9.AC.05TephroiteMn2+2SiO4Orth. mmm (2/m 2/m 2/m)
9.AC.10MonticelliteCaMgSiO4Orth.
9.AC.15BrunogeieriteFe2+2Ge4+O4Iso. m3m (4/m 3 2/m) : Fd3m
9.AC.20ChesnokoviteNa2[SiO2(OH)2] · 8H2OOrth. mmm (2/m 2/m 2/m) : Ibca

Related Minerals - Dana Grouping (8th Ed.)Hide

51.3.3.2BrunogeieriteFe2+2Ge4+O4Iso. m3m (4/m 3 2/m) : Fd3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.21.1OlivineOrth.
14.21.3Wadsleyite(Mg,Fe2+)2(SiO4)Orth.
14.21.4ClinoferrosiliteFe2+SiO3Mon.
14.21.5Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
14.21.6Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2Mon.
14.21.7 Magnesiocummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.8Grunerite☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
14.21.9MinnesotaiteFe2+3Si4O10(OH)2Tric. 1 : P1
14.21.10Chesterite(Mg,Fe)17Si20O54(OH)6Orth.
14.21.11Jimthompsonite(Mg,Fe)5Si6O16(OH)2Orth. mmm (2/m 2/m 2/m) : Pbca
14.21.12Clinojimthompsonite(Mg,Fe)5Si6O16(OH)2Mon.
14.21.13MajoriteMg3(Fe2+,Si,Al)2(SiO4)3Iso.
14.21.14Balangeroite(Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40Mon.

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.
Industrial Uses:
None.

References for RingwooditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Binns, R.A., Davis, R.J., and Reed, S.J.B. (1969) Ringwoodite, natural (Mg,Fe)2SiO4 spinel in the Tenham meteorite. Nature: 221: 943-944.
Fleischer, M. (1969) New mineral names. American Mineralogist: 54: 1218-1223.
Coleman, L.C. (1977) Ringwoodite and majorite in the Catherwood meteorite. Canadian Mineralogist: 15: 97-101.
Boctor, N.Z., Bell, P.M., and Mao, H.K. (1982) Petrology and shock metamorphism of Pampa del Infierno chondrite. Geochimica et Cosmochimica Acta: 46: 1903-1911.
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.
Pearson, D.G. et al. "Hydrous mantle transition zone indicated by ringwoodite included within diamond" letter to Nature; Nature 507, 221–224 (13 March 2014)
Thomas, S.-M., Jacobsen, S.D., Bina C.R., Reichart, P., Moser, M., Hauri, E.H., Koch-Müller, M., Smyth, J.R., Dollinger, G. (2015): Quantification of water in hydrous ringwoodite. Frontiers in Earth Science, 2, 1-10.
Mineral hints at bright blue rocks deep in the Earth
Bindi, L., Tamarova, A., Bobrov, A.V., Sirotkina, E.A., Tschauner, O., Walter, M.J., Irifune, T. (2016): Incorporation of high amounts of Na in ringwoodite: Possible implications for transport of alkali into lower mantle. American Mineralogist: 101: 483-486; http://forum.amiminerals.it/viewtopic.php?f=5&t=12214 (2016)

Internet Links for RingwooditeHide

Localities for RingwooditeHide

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.
Antarctica
 
  • Eastern Antarctica
    • American Highland
      • Grove Mts
YT Lin, Lu Feng, Sen Hu (2011) High Pressure Mineral Assemblages in the Lherzolitic Shergottite Grove Mountains (GRV) 020090. Japan Geooscience Union Meeting Makuhari, Chiba Japan.
Feng, L., Lin, Y., Hu, S., Xu, L. & Miao, B. Estimating compositions of natural ringwoodite in the heavily shocked Grove Mountains 052049 meteorite from Raman spectra. Am. Mineral. 96, 1480–1489 (2011)
Lu Feng, Masaaki Miyahara, Toshiro Nagase, Eiji Ohtani, Sen Hu, Ahmed El Goresy, Yangting Lin (2011) Shock Conditions and Formation Mechanism of Akimotoite-Pyroxene Glass Assemblages in the Grove Mountains (GRV) 052082. Japan Geooscience Union Meeting Makuhari, Chiba Japan.
    • Victoria Land
      • Elephant Morraine
Walton, E. L. (2013) Shock metamorphism of Elephant Moraine A79001: Implications for olivine-ringwoodite transformation and the complex thermal history of heavily shocked Martian meteorites. Geochimica et Cosmochimica Acta 107:299-315. (Apr 2013).
Argentina
 
  • Chaco
    • Almirante Brown Department
      • Pampa del Infierno
Geochimica et Cosmochimica Acta: 46: 1903-1911.
Australia (TL)
 
  • Queensland
    • Barcoo Shire
      • Windorah
        • Tenham Station
CM 15 (1977), 97; HB2/2 (1995); Nature 1969, 943-4; T. Ferroir, M. Miyahara, E. Ohtani, P.Beck, A. Simionovici P. Gillet and A. El Goresy 72nd Meeting of the Meteoritical Society: Abstracts Page A69 No. 5143
  • Western Australia
    • Dundas Shire
      • Rawlinna
Smith, J. V.; Mason, Brian 1970 Pyroxene-Garnet Transformation in Coorara Meteorite. Science, Volume 168, Issue 3933, pp. 832-833
Brazil
 
  • Mato Grosso
Pearson, D.G. et al. "Hydrous mantle transition zone indicated by ringwoodite included within diamond" letter to Nature; Nature 507, 221–224 (13 March 2014)
Canada
 
  • Alberta
    • Peace River
Canadian Mineralogist Vol. 21, pp. 29-35 (1983); Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
  • Saskatchewan
    • Catherwood
Canadian Mineralogist (1977): 15: 97-101.
China
 
  • Hebei Province
    • Zhangjiakou Prefecture
      • Wanquan Co.
Hongsen Xie, Huifen Zhang, Yueming Zhang, Huigang Xu, Shijie Zhuang (1984): Acta Mineralogica Sinica 4(4), 289-295
  • Hubei Province
    • Suizhou Prefecture
      • Zengdu District (Cengdou District)
        • Xihe
American Mineralogist (2000): 85: 1564.; Xie Xiande, Chen Ming, Wang Deqiang, A. El Goresy (2001): NaAlSi3O8-hollandite and other high-pressure minerals in the shock melt veins of the Suizhou meteorite. Chinese Science Bulletin 46, 1116-1125.; Chen, M., Shu, J., & Mao, H. K. (2008). Xieite, a new mineral of high-pressure FeCr2O4 polymorph. Chinese Science Bulletin, 53(21), 3341-3345.; Chen, M., & Xie, X. (2015). Shock-produced akimotoite in the Suizhou L6 chondrite. Science China Earth Sciences, 58(6), 876-880.
  • Jiangsu Province
    • Taizhou Prefecture
      • Gaogang District
        • Sixiangkou
Zhang, A., et al (2006): Lunar and Planetary Science, 37, 1069; Miyajima, N., El Goresy, A., Dupas-Bruzek, C., Seifert, F., Rubie, D.C., Chen, M., Xie, X. (2007): Ferric iron in Al-bearing akimotoite coexisting with iron-nickel metal in a shock-melt vein in an L-6 chondrite. American Mineralogist, 92, 1545-1549.; 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)
Libya
 
  • Al Jabal al Gharbi District
Morocco
 
  • Souss-Massa Region
    • Tata Province
Ma, C., Tschauner, O., Liu, Y., Beckett, J. R., Rossman, G. R., Zuravlev, K., ... & Taylor, L. A. (2014, March). Discovery of Ahrensite gamma-Fe2SiO4 and Tissintite (Ca, Na, □) AlSi2O6: Two New High Pressure Minerals from the Tissint Martian Meteorite. In Lunar and Planetary Science Conference (Vol. 45, p. 1222).; Baziotis, I. P., Liu, Y., DeCarli, P. S., Melosh, H. J., McSween, H. Y., Bodnar, R. J., & Taylor, L. A. (2013). The Tissint Martian meteorite as evidence for the largest impact excavation. Nature Communications, 4, 1404.
Oman
 
  • Dhofar Governorate (Al Janubiyah Province)
D.D. Badjukov et al. , Lunar and Planetary Science, XXXVI (2005), 1684.pdf
USA
 
  • Kansas
    • Ness Co.
Rubin, A.E. & Read, W.F. (1984) The Brownell and Ness County (1894) L6 Chondrites: Further sorting-out of Ness County meteorites. Meteoritics 19(3):153-160. (Sept 1984).
  • New Mexico
    • De Baca Co.
http://www.museum.hu-berlin.de/min/forsch/Schockklassifikation%20Stoeffler/Final%20Version/subdir/effectsa.htm
Acosta, T.E., Scott, E.R.D. & Sharma, S.K. (2012) Micro-Raman Mapping of Mineral Phases in the Strongly Shocked Taiban Ordinary Chondrite: 43rd Lunar and Planetary Science Conference. LPI Contribution No. 1659, id.2725.
    • Harding Co.
Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
    • Roosevelt Co.
      • Rogers
  • Oregon
    • Josephine Co.
      • Josephine Creek District
www.geo.cornell.edu/geology/faculty/Bird.html
  • Texas
    • Randall Co.
Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
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