ZONED REE-ENRICHED DRAVITE FROM A GRANITIC PEGMATITE IN FORSHAMMAR, BERGSLAGEN PROVINCE, SWEDEN: AN EMPA, XRD AND LA-ICP-MS STUDY

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F12%3A00064545" target="_blank" >RIV/00216224:14310/12:00064545 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3749/canmin.50.4.825" target="_blank" >http://dx.doi.org/10.3749/canmin.50.4.825</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3749/canmin.50.4.825" target="_blank" >10.3749/canmin.50.4.825</a>

Jazyk výsledku

angličtina

Název v původním jazyce

ZONED REE-ENRICHED DRAVITE FROM A GRANITIC PEGMATITE IN FORSHAMMAR, BERGSLAGEN PROVINCE, SWEDEN: AN EMPA, XRD AND LA-ICP-MS STUDY

Popis výsledku v původním jazyce

Green to grayish green tourmaline crystals (up to 10 cm across), with distinct optical zoning, occurs with quartz, blocky albite and muscovite in the Forshammar granitic pegmatite, central Bergslagen province, Sweden. Tourmaline contains inclusions of zircon and xenotime-(Y), and it is cut by veinlets of muscovite and hydroxylbastnasite-(Ce). Microanalytical and structural data (from the rim) indicate that the tourmaline can be classified as a dravite with moderate Al-Mg disorder at the Y and Z sites. Tourmaline displays chemical zoning that reflects the distribution of Fe, Mg, Al, Ca and Na. The Mg/(Mg+Fe) value is high; it decreases from core (similar to 0.85) to intermediate zone (0.76-0.79), but increases in the rim and vein dravite (0.93). The core has the highest proportion of X-site vacancy and Al content, whereas the intermediate zone is the most enriched in Fe and Na. The rim is slightly depleted in Al and has the highest Na compared to inner zones.

Název v anglickém jazyce

ZONED REE-ENRICHED DRAVITE FROM A GRANITIC PEGMATITE IN FORSHAMMAR, BERGSLAGEN PROVINCE, SWEDEN: AN EMPA, XRD AND LA-ICP-MS STUDY

Popis výsledku anglicky

Green to grayish green tourmaline crystals (up to 10 cm across), with distinct optical zoning, occurs with quartz, blocky albite and muscovite in the Forshammar granitic pegmatite, central Bergslagen province, Sweden. Tourmaline contains inclusions of zircon and xenotime-(Y), and it is cut by veinlets of muscovite and hydroxylbastnasite-(Ce). Microanalytical and structural data (from the rim) indicate that the tourmaline can be classified as a dravite with moderate Al-Mg disorder at the Y and Z sites. Tourmaline displays chemical zoning that reflects the distribution of Fe, Mg, Al, Ca and Na. The Mg/(Mg+Fe) value is high; it decreases from core (similar to 0.85) to intermediate zone (0.76-0.79), but increases in the rim and vein dravite (0.93). The core has the highest proportion of X-site vacancy and Al content, whereas the intermediate zone is the most enriched in Fe and Na. The rim is slightly depleted in Al and has the highest Na compared to inner zones.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Canadian Mineralogist

ISSN

0008-4476

e-ISSN

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Svazek periodika

50

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CA - Kanada

Počet stran výsledku

17

Strana od-do

825-841

Kód UT WoS článku

000314174400006

EID výsledku v databázi Scopus

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