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Fluorcarbonates of lanthanides as the typical minerals of Kimozero kimberlites (Karelia) metamorphosed to the
Prehnite-pumpellyite facies
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| RMS-DPI code: |
2017-1-280-0 |
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| Scientific session: |
6. Mineral diversity and evolution of mineral formation processes. |
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| Author listing: |
Putintseva E.V., Spiridonov E.M. |
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| Principal author: |
Spiridonov Ernst Maxovich. |
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| Language: |
Russian |
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Abstract - Summary
(short description): | |
Metamorphosed Kimozero kimberlites, which petrologically are metakimberlites of the prenhnite-pumpellyite facies, consist of antigorite, actinolite, tremolite, calcite, dolomite, chlorites, magnetite, talc, sphene, rutile, hematite, ferropseudobrookite, Fe-Ni sulfides, apatite, zircon, baddeleyite, bixbyite, thorite. REE minerals of metakimberlites, such as allanite, bastnäaesite, parisite, monazite, inherited the Ce, Ce-La and Ce-La-Nd characteristics of magmatic calcite, perovskite and apatite. Allanite-(Ce) is widespread. Bastnäsite-(Ce) and –(La), parasite-(Ce) and
-(La) or monazite-(Ce) with prevalence of hydroxyl groups and less dominant fluor groups have replaced allanite at the later stages of metamorphism.
Key words: metakimberlites of the prehnite-pumpellyite facies, hydroxylbastnäsite, hydroxylparasite, bastnäsite, parasite.
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| | RMS-DPI code: |
2017-1-280-0 |
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| Pages: |
309-310 |
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File of proceedings
(PDF): |
115 K
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| Status: |
printed |
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| Recieved: |
22/08/2017 |
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| Accepted: |
17/09/2017 |
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| Published on-line: |
07/12/2017 |
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| Permanent address of publication: |
http://www.minsoc.ru/2017-1-280-0/ |
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| Contact author(s): |
Spiridonov, Ernst Maxovich. |
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