Tourmaline, an indicator of external Mg-contamination of
granitic pegmatites from host serpentinite; examples from the
Moldanubian Zone

a 2017

Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone

NOVÁK, Milan, Jiří PROKOP, Zdeněk LOSOS and Ivo MACEK

Basic information

Original name

Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone

Authors

NOVÁK, Milan (203 Czech Republic, belonging to the institution), Jiří PROKOP (203 Czech Republic, belonging to the institution), Zdeněk LOSOS (203 Czech Republic, guarantor, belonging to the institution) and Ivo MACEK (203 Czech Republic, belonging to the institution)

Edition

CAM-2017 (Conference on Accessory Minerals), Wien, 2017

Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

10504 Mineralogy

Country of publisher

Austria

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/17:00095606

Organization unit

Faculty of Science

Keywords in English

tourmaline;pegmatite;contamination;Moldanubian Zone;serpentinite

Abstract

V originále

Dominant primary solidus and minor subsolidus tourmalines from a variety of granitic pegmatites enclosed in serpentinites of the Moldanubian Zone, Czech Republic were examined, mainly by electron probe micro-analyser, to reveal the degree of external Mg(Ca)-contamination from their host rocks. The rocks include: (i) homogeneous to slightly hetero- geneous nests of plagioclase-tourmaline rocks (group A) of anatectic or metasomatic origin, (ii) subhomogeneous to simply zoned barren pegmatite dikes (group B), and (iii) Li-bear- ing zoned pegmatite dikes of rare-element class (group C). The plagioclase-tourmaline rocks (group A) show spatial relation to pegmatites of the group B. Mostly black primary tourmalines (dravite, oxy-dravite, uvite, schorl, oxy-schorl, fluor-schorl) show extensive Mg- and Ca-contamination (group A), moder- ate Mg- and locally minor Ca-contamination (group B plus the locality Věžná I of the group C) and weak Mg-contamination of the tourmaline solely from outermost pegmatite units (group C); tourmalines from internal units of the pegmatites are typically Mg-free.

Links

GA14-13347S, research and development project

Name: Variabilita lehkých prvků (Li, Be, B) ve vybraných horninotvorných a akcesorických minerálech z felsických magmatických a metamorfovaných hornin

Investor: Czech Science Foundation

Citovat

NOVÁK, Milan, Jiří PROKOP, Zdeněk LOSOS and Ivo MACEK. Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone. In CAM-2017 (Conference on Accessory Minerals), Wien. 2017.

@proceedings{1412748,
   author = {Novák, Milan and Prokop, Jiří and Losos, Zdeněk and Macek, Ivo},
   booktitle = {CAM-2017 (Conference on Accessory Minerals), Wien},
   keywords = {tourmaline;pegmatite;contamination;Moldanubian Zone;serpentinite},
   language = {eng},
   title = {Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone},
   year = {2017}
}

TY  - CONF
ID  - 1412748
AU  - Novák, Milan - Prokop, Jiří - Losos, Zdeněk - Macek, Ivo
PY  - 2017
TI  - Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone
KW  - tourmaline;pegmatite;contamination;Moldanubian Zone;serpentinite
N2  - Dominant primary solidus and minor subsolidus tourmalines from a variety of granitic pegmatites enclosed in serpentinites of the Moldanubian Zone, Czech Republic were examined, mainly by electron probe micro-analyser, to reveal the degree of external Mg(Ca)-contamination from their host rocks. The rocks include: (i) homogeneous to slightly hetero- geneous nests of plagioclase-tourmaline rocks (group A) of anatectic or metasomatic origin, (ii) subhomogeneous to simply zoned barren pegmatite dikes (group B), and (iii) Li-bear- ing zoned pegmatite dikes of rare-element class (group C). The plagioclase-tourmaline rocks (group A) show spatial relation to pegmatites of the group B. Mostly black primary tourmalines (dravite, oxy-dravite, uvite, schorl, oxy-schorl, fluor-schorl) show extensive Mg- and Ca-contamination (group A), moder- ate Mg- and locally minor Ca-contamination (group B plus the locality Věžná I of the group C) and weak Mg-contamination of the tourmaline solely from outermost pegmatite units (group C); tourmalines from internal units of the pegmatites are typically Mg-free.
ER  -

NOVÁK, Milan, Jiří PROKOP, Zdeněk LOSOS and Ivo MACEK. Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone. In \textit{CAM-2017 (Conference on Accessory Minerals), Wien}. 2017.

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