التفاصيل البيبلوغرافية
| العنوان: |
Liebermannite, KAlSi3O8, a new shock‐metamorphic, high‐pressure mineral from the Zagami Martian meteorite. |
| المؤلفون: |
Ma, Chi, Tschauner, Oliver, Beckett, John R., Rossman, George R., Prescher, Clemens, Prakapenka, Vitali B., Bechtel, Hans A., MacDowell, Alastair |
| المصدر: |
Meteoritics & Planetary Science; Jan2018, Vol. 53 Issue 1, p50-61, 12p |
| مصطلحات موضوعية: |
METEORITES, SILICATE minerals, MINERAL physics, GEOLOGY |
| الشركة/الكيان: |
STONY Brook University |
| مستخلص: |
Abstract: In this paper, we discuss the occurrence of liebermannite (IMA 2013‐128), KAlSi3O8, a new, shock‐generated, high‐pressure tetragonal hollandite‐type structure silicate mineral, in the Zagami basaltic shergottite meteorite. Liebermannite crystallizes in space group I4/m with Z = 2, cell dimensions of a = 9.15 ± 0.14 (1σ) Å, c = 2.74 ± 0.13 Å, and a cell volume of 229 ± 19 Å3 (for the type material), as revealed by synchrotron diffraction. In Zagami, liebermannite likely formed via solid‐state transformation of primary igneous K‐feldspar during an impact event that achieved pressures of ~20 GPa or more. The mineral name is in honor of Robert C. Liebermann, a high‐pressure mineral physicist at Stony Brook University, New York, USA. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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