Sulfur and REE zoning in apatite: the example of the Colli Albani magmatic system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10382167" target="_blank" >RIV/00216208:11310/18:10382167 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1127/ejm/2018/0030-2701" target="_blank" >https://doi.org/10.1127/ejm/2018/0030-2701</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1127/ejm/2018/0030-2701" target="_blank" >10.1127/ejm/2018/0030-2701</a>
Alternative languages
Result language
angličtina
Original language name
Sulfur and REE zoning in apatite: the example of the Colli Albani magmatic system
Original language description
We investigate the distribution of major and trace elements in apatite crystals hosted in granular alkaline rocks composed mainly of leucite and clinopyroxene, representative of the hypabyssal crystallization of a magma body in the Quaternary ultra-potassic Colli Albani Volcanic District (CAVD), which was emplaced into thick limestone units along the Tyrrhenian margin of Italy. Results show that the analyzed crystals are the SrO-richest (up to 4.6 wt%) fluorapatite (F = 2.6-3.7 wt%) of the Italian alkaline rocks. The strontium enrichment is caused by the lack of other Sr-compatible mineral phases, such as plagioclase, alkali feldspar and melilite, in these leucite-and clinopyroxene-bearing rocks. The studied samples show core-rim zoning with rims enriched in Si, S, and REE whereas the cores are enriched in Ca and P. The LREE-oxides contents of apatite, reaching 4.2 wt%, represent more than 95% of the total REE budget; SiO2 contents range from 1.3 to 3.6 wt%, and SO3 concentrations between 0.6 and 1.4 wt%. We support the idea that REE and sulfur enrichment are a response to the crystallization caused by the pressure drop in the magmatic system during the eruption and follow the substitution mechanisms Si4+ + REE3+ = P5+ + Ca2+ and S6+ + Si4+ = 2P(5+). The results also suggest the presence of the substitution Th4+ + 2Si(4+) = Ca2+ + 2P(5+).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA18-01982S" target="_blank" >GA18-01982S: Experimental determination of the effect of oxygen fugacity on mineral/melt partitioning for the Highly Siderophile Elements at mantle conditions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Journal of Mineralogy
ISSN
0935-1221
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
9
Pages from-to
125-133
UT code for WoS article
000431774600011
EID of the result in the Scopus database
2-s2.0-85047081135