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Bridgmanite

This page kindly sponsored by Mark Andrews
Percy Williams Bridgman
Formula:
(Mg,Fe)SiO3
Crystal System:
Orthorhombic
Name:
Named in 2014 by Chi Ma and Oliver Tschauner in honor of Percy Williams Bridgman [April 21, 1882 Cambridge, Massachusetts, USA - August 20, 1961 Randolph, New Hampshire, USA], winner of the Nobel Prize for Physics in 1946 for his work in high-pressure physics.
Perovskite-type high-pressure phase.

This mineral is believed to compose up to 93% of the lower mantle above around 2700km and therefore is probably the most abundant mineral in the Earth.

It was experimentally proven that bridgmanite may incorporate Na, but not as readily as ringwoodite (Bindi et al., 2016).


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Classification of BridgmaniteHide

Approved
Approval Year:
2014
9.A0.

9 : SILICATES (Germanates)
A : Nesosilicates
0 :

Chemical Properties of BridgmaniteHide

Formula:
(Mg,Fe)SiO3
IMA Formula:
MgSiO3

Crystallography of BridgmaniteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 5.02(3) Å, b = 6.90(3) Å, c = 4.81(2) Å
Ratio:
a:b:c = 0.728 : 1 : 0.697
Unit Cell V:
166.61 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.456(100)
2.175(34)
2.081(37)
2.075(34)
1.924(37)
1.743(52)
1.444(41)
1.400(76)

Type Occurrence of BridgmaniteHide

Place of Conservation of Type Material:
In the collections of the Smithsonian Institution’s National Museum of Natural History, Washington DC, USA,registration number USNM 7703
Geological Setting of Type Material:
As submicrometer-sized crystals in shock-induced melt veins in the Tenham meteorite.

Synonyms of BridgmaniteHide

Other Language Names for BridgmaniteHide

Relationship of Bridgmanite to other SpeciesHide

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.

References for BridgmaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Murakami, M., Ohishi, Y., Hirao, N. & Hirose, K. (2012): A perovskitic lower mantle inferred from high-pressure, high-temperature sound velocity data. Nature 485(7396), 90–94. doi:10.1038/nature11004
Chi Ma and Oliver Tschauner (2014) Earth-building Bridgemanite, Caltech Press release, Katie Neith, http://www.caltech.edu/content/earth-building-bridgmanite.
Tschauner, O. and Ma, C. (2014)Bridgmanite, IMA 2014-017. CNMNC Newsletter No. 21, August 2014, page 798; Mineralogical Magazine, 78, 797-804.
Tschauner, O., Ma, C., Beckett, J.R., Prescher, C., Prakapenka, V.B., Rossman, G.R. (2014) Discovery of bridgmanite, the most abundant mineral in Earth, in a shocked meteorite. Science 346, 1110-1112. doi:10.1126/science.1259369
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 BridgmaniteHide

Localities for BridgmaniteHide

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.
Australia (TL)
 
  • Queensland
    • Barcoo Shire
      • Windorah
        • Tenham Station
Tschauner, O. and Ma, C. (2014) Bridgmanite, IMA 2014-017. CNMNC Newsletter No. 21, August 2014, page 798; Mineralogical Magazine, 78, 797-804.
Mineral and/or Locality  
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