Detailed Information on Publication Record
2004
Schorl-oxy-schorl to dravite-oxy-dravite tourmaline from granitic pegmatites; examples from the Moldanubicum, Czech Republic
NOVÁK, Milan, Pavel POVONDRA and Julie Beryl SELWAYBasic information
Original name
Schorl-oxy-schorl to dravite-oxy-dravite tourmaline from granitic pegmatites; examples from the Moldanubicum, Czech Republic
Name in Czech
Skoryl-oxy-skoryl až dravit-oxy-dravit z granitických pegmatitů; příklady z moldanubika, Česká republika
Authors
NOVÁK, Milan (203 Czech Republic, guarantor), Pavel POVONDRA (203 Czech Republic) and Julie Beryl SELWAY (124 Canada)
Edition
European Journal of Mineralogy, 2004, 0935-1221
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10500 1.5. Earth and related environmental sciences
Country of publisher
Germany
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.207
RIV identification code
RIV/00216224:14310/04:00010654
Organization unit
Faculty of Science
UT WoS
000220576500014
Keywords in English
Schorl-oxy-schorl to dravite-oxy-dravite tourmaline from granitic pegmatites; examples from the Moldanubicum; Czech Republic
Změněno: 31/5/2005 10:19, Ing. Roman Hladík
V originále
Wet-chemical analyses (41) of tourmaline from granitic pegmatites (barren, barren-pocket, beryl, lepidolite types) in the Moldanubicum, Czech Republic revealed that members of the oxy-subgroup ĄV common oxy-schorl, minor oxy-dravite and rare oxy-foitite are more abundant relative to the relevant members of the hydroxy-subgroup. The primary substitution mechanisms in tourmaline show combination of heterovalent substitutions: YAlWO YR2+-1W(OH)-1, XďYAl2WO XNa-1YR2+-2W(OH)-1, XďYAl XNa-1YR2+-1 and Xď W(OH) XNa-1WO-1, and homovalent substitutions: Fe2+Mg-1 and (OH)F-1. Tourmalines with the chemistry expressed by the general formula X(Na0.5ď0.5)Y(R2+2Al)ZAl6(BO3)3Si6O18V(OH)3W(O0.5OH0.5) crystallized in very similar PT conditions in granitic systems saturated on Na, Al, Si and H2O, it indicates the importance of short-range order requirements on tourmaline chemical composition. Abundance of heterovalent substitutions involving the W-site requires determination of light elements (H, B, F, Li) and Fe2+/Fe3+ in tourmalines to specify substitution mechanisms with certainty. Normalization of electron-microprobe data of (Fe,Mg)-rich, (Ca,Li,F)-poor tourmalines from granitic pegmatites on (OH,F)3.5O0.5, which is more probable than (OH,F)4, seems to be suitable.
In Czech
Skoryl-oxy-skoryl až dravit-oxy-dravit z granitických pegmatitů; příklady z moldanubika, Česká republika - zjištěny velmi specikická složení turmalínů, čstý vstup O do pozice W
Links
| GA205/03/0040, research and development project |
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| GA205/99/0434, research and development project |
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| MSM 143100004, plan (intention) |
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