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Hemleyite

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Russell J. Hemley
Formula:
(Fe2+0.48Mg0.37Ca0.04Na0.04Mn2+0.03Al0.03Cr3+0.01)sum=1.00Si1.00O3
Crystal System:
Trigonal
Member of:
Name:
Named in honour of Russell J. Hemley, former Director of the Geophysical Laboratory of the Carnegie Institution of Washington D.C., USA, and very well-known in the scientific community for his research exploring the behavior of materials under extreme conditions of pressure and temperature.
High-pressure phase, discovered in an unmelted portion of the heavily shocked L6 Suizhou chondrite. Fe(II)-analogue of akimotoite. Ilmenite-type structure.


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Classification of HemleyiteHide

Approved, Pending publication
Approval Year:
2016

Pronounciation of HemleyiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Chemical Properties of HemleyiteHide

Formula:
(Fe2+0.48Mg0.37Ca0.04Na0.04Mn2+0.03Al0.03Cr3+0.01)sum=1.00Si1.00O3
IMA Formula:
FeSiO3

Crystallography of HemleyiteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 4.7483(5) Å, c = 13.665(1) Å
Ratio:
a:c = 1 : 2.878
Unit Cell V:
266.82 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.520(35)
2.625(100)
2.376(50)
2.105(50)
1.762(25)
1.645(50)
1.415(10)
1.372(20)

Type Occurrence of HemleyiteHide

Place of Conservation of Type Material:
Holotype material is deposited in the collections of the Museo di Storia Naturale, Università degli Studi di Firenze, Via La Pira 4, I-50121, Firenze, Italy, catalogue number 3238/I.
Geological Setting of Type Material:
Shocked chondrite

Synonyms of HemleyiteHide

Relationship of Hemleyite to other SpeciesHide

Member of:
Other Members of this group:
Akimotoite(Mg,Fe2+)SiO3Trig.
Ecandrewsite(Zn,Fe2+,Mn2+)TiO3Trig. 3 : R3
GeikieliteMgTiO3Trig. 3 : R3
IlmeniteFe2+TiO3Trig. 3 : R3
PyrophaniteMn2+TiO3Trig. 3 : R3
Unnamed (Fe-Cr Oxide)FeCrO3Trig. 3 : R3

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 HemleyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bindi, L., Chen, M., Xie, X. (2017) Hemleyite, IMA 2016-085. CNMNC Newsletter No. 35, February 2017, page 210. Mineralogical Magazine: 81: 209–213.
Bindi, L., Chen, M., Xie, X. (2017) Discovery of the Fe-analogue of akimotoite in the shocked Suizhou L6 chondrite. Scientific Reports 7, Article number: 42674.

Internet Links for HemleyiteHide

Localities for HemleyiteHide

ⓘ - 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.
China (TL)
 
  • Hubei Province
    • Suizhou Prefecture
      • Zengdu District (Cengdou District)
        • Xihe
Bindi, L., Chen, M. & Xie, X. (2017): Discovery of the Fe-analogue of akimotoite in the shocked Suizhou L6 chondrite. Scientific Reports 7, Article number: 42674.
Mineral and/or Locality  
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