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Bridgmanite

A valid IMA mineral species
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EditAdd SynonymEdit CIF structuresClear Cache
(Mg,Fe)SiO3
Crystal System:
Orthorhombic
Member of:
Bridgmanite Subgroup >Stoichiometric Perovskites Group >Perovskite Supergroup
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.
Type Locality:
ⓘTenham meteorite, Tenham Station, Windorah, Barcoo Shire, Queensland, Australia
Polymorph of:
Akimotoite,Clinoenstatite,Enstatite,Unnamed (Mg silicate tetragonal garnet)
Perovskite-type high-pressure phase. The Mg analogue ofhiroseite.

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

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

CompareUM2011-20-SiO:AlFeMg, which is "intermediate" betweenolivine group andenstatite and also incorporates Na.

One of six minerals proposed to be essential for life emergence (Russell & Ponce, 2020).


Unique Identifiers
IMA Formula:
MgSiO3
Approval year:
2014

Classification of Bridgmanite

Mineral Symbols

Crystallography of Bridgmanite
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 Bridgmanite

Relationship of Bridgmanite to other Species
Other Members of this group:
DavemaoiteCaSiO3Iso.m3m(4/m32/m) :Pm3m

Related Minerals -Strunz-mindat GroupingMon. 2/m :B2/m9.H0.DavemaoiteCaSiO3Iso.m3m(4/m32/m) :Pm3m

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    • References for BridgmaniteⓘTenham meteorite (TL)Mineralogical Magazine+3 other references
    Brazil
     
    Kaminsky et al. (2022)+1 other reference
    India
     
    Ghosh et al. (2021)
    Morocco
     
    Miyahara et al. (2016)
    South Africa
     
    Meyer (2021)
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