The age of metamorphism is constrained by U-Pb dating of titanite from amphibolite
in the gneiss, which gave an age of 496 [+ or -] 5 Ma (Dunning et al.
The gold mineralization at Gilded Rose occurs as sheeted quartz veins and reefs within an interbedded sequence of schist, phyllite and amphibolite
rocks, which can be traced over 1km along strike.
4) RA(PP) = Prehnite-Actinolite (Prehnite-Pumpellyite) subfacies; RA = Prehnite-Actinolite facies; GS = Greenschist facies; AMPH= Amphibolite
facies (abbreviations from Miyazaki and Okumura (2002)).
rocks retrograded to amphibolite
The Horseshoe zone is characterized by high grade gold mineralization associated with sulphides and quartz veining hosted in the fold closure of an amphibolite
The licenses include both Ghanzi (Kalahari Belt) and Matchless Amphibolite
Regional mapping undertaken by BRGM in 1986 identified a NE-SW trending package of Archaean to Proterozoic age quartzitic metasediment, gneiss and amphibolite
, as well as numerous itabirite units containing millimetre to centimetre thick bands of magnetite.
This gneiss contains amphibolite
and an attenuated granitic dike with ~400 Ma zircon and monazite, respectively (Aleinikoff et al.
These include granitic gneiss, paragneiss, migmatite, amphibolite
, quartzite, arkose, marble, and calc-silicate zones in marble.
The Project is underlain by rocks of the Yukon-Tanana Terrane consisting of Paleozoic metavolcanic and metasedimentary rocks of the Cleary Sequence and Fairbanks Schist, which are in thrust contact and interleaved with eclogite and amphibolite
facies rocks of the Chatanika Terrane.
This mapping identified a NE-SW trending package of Archaean to Proterozoic age quartzitic metasediment, gneiss and amphibolite
, as well as numerous itabirite units containing millimetre to centimetre bands of magnetite.
The olivine-tremolite assemblages observed within the ultramafic rocks are consistent with the metamorphic grade recorded by amphibolite
of the Lloyds River Fault Zone.
The Coolgardie Goldfield is Archaen aged and situated at the western margin of the Norseman-Wiluna Belt within the Yilgarn Craton and comprises an arcuate belt of deformed, amphibolite
grade mafic, ultramafic, felsic and sedimentary rocks bounded to the east by syntectonic monzogranite.
Platt Creek Samples: June 2009 Drill area Sample Location Type Rock Unit Alteration % U3O8 SB044 Platt Creek Boulder Amphibolite
39]Ar amphibole cooling age of about 391 Ma for amphibolite
from Green Island, located offshore from Isle Madame (Fig.