@misc{10481/71712,
year = {2021},
month = {10},
url = {http://hdl.handle.net/10481/71712},
abstract = {In this short communication, we present preliminary data on the Re-Os isotopic systematics of platinum-group minerals (PGM) recovered from different horizons in the Falcondo Ni-laterite in the Dominican Republic. The results show differences in the Os-isotope composition in different populations of PGM: (i) pre-lateritic PGM yield Os-187/Os-188 varying from 0.11973 & PLUSMN; 0.00134 to 0.12215 & PLUSMN; 0.00005 (2 sigma uncertainty) whereas (ii) lateritic PGM are more radiogenic in terms of Os-187/Os-188 (from 0.12390 & PLUSMN; 0.00001 to 0.12645 & PLUSMN; 0.00005; 2 sigma uncertainty). We suggest that these differences reflect the opening of the Re-Os system in individual grains of PGM during lateritic weathering. The implications of these results are twofold as they will help to (1) elucidate the small-scale mobility of noble metals in the supergene setting and therefore the possible formation of PGM at these very low temperatures, (2) better refine the Os-isotopic datasets of PGM that are currently being used for defining dynamic models of core-mantle separation, crustal generation, and fundamental plate-tectonic processes such as the opening of oceans.},
organization = {FEDER by the "Ministerio de Ciencia, Innovacion y Universidades"	PID2019-105625RB-C21	
RTI2018099157AI00},
organization = {Spanish Government	RYC-2015-17596},
organization = {Centre of Advanced Mining and Metallurgy (CAMM)},
publisher = {MDPI},
keywords = {Re-Os isotopes},
keywords = {Platinum-group minerals},
keywords = {Ni laterite},
keywords = {Dominican Republic},
title = {Open System Re-Os Isotope Behavior in Platinum-Group Minerals during Laterization?},
doi = {10.3390/min11101083},
author = {Aiglsperger, Thomas and González Jiménez, José María},
}