Milarite-group minerals from the NYF pegmatite Velká skála,
Písek district, Czech Republic: sole carriers of Be from the
magmatic to hydrothermal stage

J 2017

Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole carriers of Be from the magmatic to hydrothermal stage

NOVÁK, Milan; Cícha JAROSLAV; Renata ČOPJAKOVÁ; Radek ŠKODA; Michaela VAŠINOVÁ GALIOVÁ et. al.

Základní údaje

Originální název

Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole carriers of Be from the magmatic to hydrothermal stage

Autoři

NOVÁK, Milan (203 Česká republika, garant, domácí); Cícha JAROSLAV (203 Česká republika); Renata ČOPJAKOVÁ (203 Česká republika, domácí); Radek ŠKODA (203 Česká republika, domácí) a Michaela VAŠINOVÁ GALIOVÁ (203 Česká republika, domácí)

Vydání

European Journal of Mineralogy, STUTTGART, E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS, 2017, 0935-1221

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.190

Kód RIV

RIV/00216224:14310/17:00095591

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1127/ejm/2017/0029-2652

UT WoS

000426885400021

EID Scopus

2-s2.0-85031286216

Klíčová slova anglicky

milarite; agakhanovite-(Y); EPMA; LA–ICP-MS; CL; compositional trends; beryllium; NYF pegmatite

Štítky

NZ, rivok

Změněno: 9. 4. 2018 12:28, Ing. Nicole Zrilić

Anotace

V originále

Four distinct paragenetic, morphological and compositional types of milarite-group minerals were distinguished in the NYF pegmatite Velka skala, Pisek district, Czech Republic (Moldanubian Zone). The simply zoned (Kfs, Plg, Ab, Qz> Bt> Ap> Tur) pegmatite dike, similar to 60 cm thick, is enclosed in durbachite (K, Mg-rich melasyenite). The milarite-group minerals include: yellowish, subhedral, prismatic grains of homogeneous milarite I (milarite s. s.); prismatic subparallel aggregates of white to grayish milarite II (zoned milarite s. s. to Sc-rich milarite, up to similar to 20 mol% of the oftedalite component) from small pockets; colorless hexagonal prismatic crystals of milarite III (milarite s. s.) lining open fractures and microscopic fillings in recrystallized K-feldspar locally associated with REE-bearing minerals (allanite, aeschynite, titanite); very rare milarite IV (milarite s. s. to agakhanovite) as prismatic crystals and thin overgrowths with complex oscillatory zoning, <= 200mm in size, on crystals of milarite II and milarite III. Their mineral assemblages, textures and compositions suggest primary (magmatic) for milarite I and hydrothermal origin for milarite II, III, and IV. The simplified compositional evolution in these milarites is: Al+Ca -> Be+Sc -> Be+Y, HREE -> Be+LREE. Milaritegroup minerals are the sole carriers of Be in the pegmatite, no relics or pseudomorphs after other Be-rich minerals were found; thus milarite is now established as an additional primary Be-rich mineral in granitic pegmatites. Mineral assemblages, chemical composition of minerals and close relation to the host durbachite suggest an NYF affinity of the Velka skala pegmatite as well as a close relation to euxenite-type pegmatites of the Trebic Pluton. Milarite-group minerals from Velka Skala exhibit very similar compositional evolution to those found in the Heftetjern pegmatite, Tordal, Norway.

Návaznosti

GA14-13347S, projekt VaV

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

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

MUNI/A/1316/2015, interní kód MU

Název: Geologické, geodynamické a environmentální procesy východního okraje Českého masívu (Akronym: Geodyn)

Investor: Masarykova univerzita, Geologické, geodynamické a environmentální procesy východního okraje Českého masívu, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

Citovat

NOVÁK, Milan; Cícha JAROSLAV; Renata ČOPJAKOVÁ; Radek ŠKODA a Michaela VAŠINOVÁ GALIOVÁ. Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole carriers of Be from the magmatic to hydrothermal stage. European Journal of Mineralogy. STUTTGART: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS, 2017, roč. 29, č. 4, s. 755-766. ISSN 0935-1221. Dostupné z: https://doi.org/10.1127/ejm/2017/0029-2652.

@article{1411862,
   author = {Novák, Milan and Jaroslav, Cícha and Čopjaková, Renata and Škoda, Radek and Vašinová Galiová, Michaela},
   article_location = {STUTTGART},
   article_number = {4},
   doi = {https://doi.org/10.1127/ejm/2017/0029-2652},
   keywords = {milarite; agakhanovite-(Y); EPMA; LA–ICP-MS; CL; compositional trends; beryllium; NYF pegmatite},
   language = {eng},
   issn = {0935-1221},
   journal = {European Journal of Mineralogy},
   title = {Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole carriers of Be from the magmatic to hydrothermal stage},
   url = {https://www.schweizerbart.de/papers/ejm/detail/29/88113/Milarite_group_minerals_from_the_NYF_pegmatite_Velka_skala_Pisek_district_Czech_Republic_sole_carriers_of_Be_from_the_magmatic_to_hydrothermal_stage},
   volume = {29},
   year = {2017}
}

TY  - JOUR
ID  - 1411862
AU  - Novák, Milan - Jaroslav, Cícha - Čopjaková, Renata - Škoda, Radek - Vašinová Galiová, Michaela
PY  - 2017
TI  - Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole carriers of Be from the magmatic to hydrothermal stage
JF  - European Journal of Mineralogy
VL  - 29
IS  - 4
SP  - 755-766
EP  - 755-766
PB  - E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS
SN  - 09351221
KW  - milarite
KW  - agakhanovite-(Y)
KW  - EPMA
KW  - LA–ICP-MS
KW  - CL
KW  - compositional trends
KW  - beryllium
KW  - NYF pegmatite
UR  - https://www.schweizerbart.de/papers/ejm/detail/29/88113/Milarite_group_minerals_from_the_NYF_pegmatite_Velka_skala_Pisek_district_Czech_Republic_sole_carriers_of_Be_from_the_magmatic_to_hydrothermal_stage
N2  - Four distinct paragenetic, morphological and compositional types of milarite-group minerals were distinguished in the NYF pegmatite Velka skala, Pisek district, Czech Republic (Moldanubian Zone). The simply zoned (Kfs, Plg, Ab, Qz> Bt> Ap> Tur) pegmatite dike, similar to 60 cm thick, is enclosed in durbachite (K, Mg-rich melasyenite). The milarite-group minerals include: yellowish, subhedral, prismatic grains of homogeneous milarite I (milarite s. s.); prismatic subparallel aggregates of white to grayish milarite II (zoned milarite s. s. to Sc-rich milarite, up to similar to 20 mol% of the oftedalite component) from small pockets; colorless hexagonal prismatic crystals of milarite III (milarite s. s.) lining open fractures and microscopic fillings in recrystallized K-feldspar locally associated with REE-bearing minerals (allanite, aeschynite, titanite); very rare milarite IV (milarite s. s. to agakhanovite) as prismatic crystals and thin overgrowths with complex oscillatory zoning, <= 200mm in size, on crystals of milarite II and milarite III. Their mineral assemblages, textures and compositions suggest primary (magmatic) for milarite I and hydrothermal origin for milarite II, III, and IV. The simplified compositional evolution in these milarites is: Al+Ca -> Be+Sc -> Be+Y, HREE -> Be+LREE. Milaritegroup minerals are the sole carriers of Be in the pegmatite, no relics or pseudomorphs after other Be-rich minerals were found; thus milarite is now established as an additional primary Be-rich mineral in granitic pegmatites. Mineral assemblages, chemical composition of minerals and close relation to the host durbachite suggest an NYF affinity of the Velka skala pegmatite as well as a close relation to euxenite-type pegmatites of the Trebic Pluton. Milarite-group minerals from Velka Skala exhibit very similar compositional evolution to those found in the Heftetjern pegmatite, Tordal, Norway.
ER  -

NOVÁK, Milan; Cícha JAROSLAV; Renata ČOPJAKOVÁ; Radek ŠKODA a Michaela VAŠINOVÁ GALIOVÁ. Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole carriers of Be from the magmatic to hydrothermal stage. \textit{European Journal of Mineralogy}. STUTTGART: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS, 2017, roč.~29, č.~4, s.~755-766. ISSN~0935-1221. Dostupné z: https://doi.org/10.1127/ejm/2017/0029-2652.

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