Electronic Resource
The high-pressure behavior of spherocobaltite (CoCO3): a single crystal Raman spectroscopy and XRD study
| العنوان: | The high-pressure behavior of spherocobaltite (CoCO3): a single crystal Raman spectroscopy and XRD study |
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| المؤلفون: | Chariton, S, Cerantola, V, Ismailova, L, Bykova, E, Bykov, M, Kupenko, I, Mccammon, C, Dubrovinsky, L, Chariton S, Cerantola V, Ismailova L, Bykova E, Bykov M, Kupenko I, McCammon C, Dubrovinsky L |
| بيانات النشر: | Springer country:DE 2018 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Magnesite (MgCO3), calcite (CaCO3), dolomite [(Ca, Mg)CO3], and siderite (FeCO3) are among the best-studied carbonate minerals at high pressures and temperatures. Although they all exhibit the calcite-type structure (R 3 ̄ c) at ambient conditions, they display very different behavior at mantle pressures. To broaden the knowledge of the high-pressure crystal chemistry of carbonates, we studied spherocobaltite (CoCO3), which contains Co2+ with cation radius in between those of Ca2+ and Mg2+ in calcite and magnesite, respectively. We synthesized single crystals of pure spherocobaltite and studied them using Raman spectroscopy and X-ray diffraction in diamond anvil cells at pressures to over 55 GPa. Based on single crystal diffraction data, we found that the bulk modulus of spherocobaltite is 128 (2) GPa and K′ = 4.28 (17). CoCO3 is stable in the calcite-type structure up to at least 56 GPa and 1200 K. At 57 GPa and after laser heating above 2000 K, CoCO3 partially decomposes and forms CoO. In comparison to previously studied carbonates, our results suggest that at lower mantle conditions carbonates can be stable in the calcite-type structure if the radius of the incorporated cation(s) is equal or smaller than that of Co2+ (i.e., 0.745 Å). |
| مصطلحات الفهرس: | CoCO3, High pressure, Raman spectroscopy, Spherocobaltite, Transition metal carbonate, X-ray diffraction, info:eu-repo/semantics/article |
| URL: | info:eu-repo/semantics/altIdentifier/wos/WOS:000423717700005 volume:45 issue:1 firstpage:59 lastpage:68 numberofpages:10 journal:PHYSICS AND CHEMISTRY OF MINERALS |
| الاتاحة: | Open access content. Open access content |
| ملاحظة: | STAMPA English |
| Other Numbers: | ITBAO oai:boa.unimib.it:10281/397741 10.1007/s00269-017-0902-5 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85020619332 1354534808 |
| المصدر المساهم: | BICOCCA OPEN ARCH From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1354534808 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |