Ahrensite R230013
Name: Ahrensite
RRUFF ID: R230013
Ideal Chemistry: SiFe2O4
Locality: Tissint meteorite, likely from Mars
Source: Chi Ma
Owner: Chi Ma
Description: Bluish-green polycrystalline, associated with shocked olivine, pyroxene, bridgemanite and wustite in a melt pocket. Type specimen from Ma et al (2016)
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Spinel (66) ]
CHEMISTRY 
RRUFF ID: R230013.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Fe1.12Mg0.86Si0.02)(Si0.98Fe0.02)O4
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the polished section
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Raman Data (Processed)
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POWDER DIFFRACTION 
RRUFF ID: R230013
Sample Description: Fragment recorded at synchrotron, profile is calculated
Cell Refinement Output: a: 8.1629(2)Å    b: 8.1629(2)Å    c: 8.1629(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 543.92(7)Å3    Crystal System: cubic
  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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X-ray Data (XY - RAW) View Graph
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REFERENCES for Ahrensite

American Mineralogist Crystal Structure Database Record: [view record]

Williams P A, Hatert F, Pasero M, Mills S J (2013) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 16. New minerals and nomenclature modifications approved in 2013, Mineralogical Magazine, 77, 2695-2709   [view file]

Yamanaka T, Kyono A, Nakamoto Y, Kharlamova S, Struzhkin V V, Gramsch S A, Mao H K, Hemley R J (2015) New structure of high-pressure body-centered orthorhombic Fe2SiO4, American Mineralogist, 100, 1736-1743

Glassley W E, Korstgård J A, Sørensen K (2016) Further observations related to a possible occurrence of terrestrial ahrensite, American Mineralogist, 101, 2347-2350

Ma C, Tschauner O, Beckett J R, Liu Y, Rossman G R, Sinogeikin S V, Smith J S, Taylor L A (2016) Ahrensite, γ-Fe2SiO4, a new shock-metamorphic mineral from the Tissint meteorite: Implications for the Tissint shock event on Mars, Geochimica et Cosmochimica Acta, 184, 240-256   [view file]

Bosi F, Biagioni C, Pasero M (2019) Nomenclature and classification of the spinel supergroup, European Journal of Mineralogy, 31, 183-192   [view file]

Tschauner O (2019) High-pressure minerals, American Mineralogist, 104, 1701-1731

Gu L, Hu S, Anand M, Tang X, Ji J, Zhang B, Wang N, lin Y (2022) Occurrence of tuite and ahrensite in Zagami and their significance for shock-histories recorded in martian meteorites, American Mineralogist, 107, 1018