| BELLEY, PM, TJ DZIKOWSKI, A FAGAN, Jan CEMPÍREK, LA GROAT, JK MORTENSEN, M FAYEK, G GIULIANI a AE FALLICK. Origin of scapolite-hosted sapphire near Kimmirut, Baffin Island, Nunavut, Canada. In MercierLangevin, P Dube, B Bardoux, M Ross, PS Dion, C. MINERAL RESOURCES TO DISCOVER, VOLS 1-4. GENEVA 4: SOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA, 2017, s. 1463-1466. |
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@inproceedings{1432510,
author = {Belley, PM and Dzikowski, TJ and Fagan, A and Cempírek, Jan and Groat, LA and Mortensen, JK and Fayek, M and Giuliani, G and Fallick, AE},
address = {GENEVA 4},
booktitle = {MINERAL RESOURCES TO DISCOVER, VOLS 1-4},
editor = {MercierLangevin, P Dube, B Bardoux, M Ross, PS Dion, C},
language = {eng},
location = {GENEVA 4},
pages = {1463-1466},
publisher = {SOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA},
title = {Origin of scapolite-hosted sapphire near Kimmirut, Baffin Island, Nunavut, Canada},
year = {2017}
}
TY - JOUR
ID - 1432510
AU - Belley, PM - Dzikowski, TJ - Fagan, A - Cempírek, Jan - Groat, LA - Mortensen, JK - Fayek, M - Giuliani, G - Fallick, AE
PY - 2017
TI - Origin of scapolite-hosted sapphire near Kimmirut, Baffin Island, Nunavut, Canada
PB - SOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA
CY - GENEVA 4
N2 - Gem-quality corundum (sapphire) occurs in scapolite-rich calc-silicate rock hosted in marble of the Lake Harbour Group near Kimmirut, southern Baffin Island. A deposit of blue and colourless gem corundum (Beluga occurrence) is compared to a similar calc-silicate pod generally lacking corundum but containing nepheline (Bowhead occurrence) and located 170 m to the SSW. Corundum formation was made possible by three equally important sequential metamorphic reactions: (1) formation of nepheline, diopside, and K-feldspar (inferred) at granulite facies peak metamorphic conditions; (2) partial retrograde replacement of the peak assemblage by phlogopite, oligoclase, calcite, and scapolite (Me-50-Me-67) as a result of CO2-, H2O-, Cl-, F-bearing fluid influx; and (3) retrograde breakdown of scapolite + nepheline (with CO2- and H2O-bearing fluid) to form albite, muscovite, corundum, and calcite. Late, low-temperature zeolite mineralization is common in corundum-bearing zones. Oxy-dravite 611B is +3.9 +/- 0.7 parts per thousand. The oxygen isotope composition of corundum (delta O-18(VSMOW)) is 16.4 +/- 0.1 parts per thousand.
ER -
BELLEY, PM, TJ DZIKOWSKI, A FAGAN, Jan CEMPÍREK, LA GROAT, JK MORTENSEN, M FAYEK, G GIULIANI a AE FALLICK. Origin of scapolite-hosted sapphire near Kimmirut, Baffin Island, Nunavut, Canada. In MercierLangevin, P Dube, B Bardoux, M Ross, PS Dion, C. \textit{MINERAL RESOURCES TO DISCOVER, VOLS 1-4}. GENEVA 4: SOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA, 2017, s.~1463-1466.
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