This mineralization was associated with wehrlite
alteration which has a high magnetic susceptibility and can also present magnetic anomalies.
The crustal section of the Muslim Bagh ophiolite consists of bands of dunite wehrlite
pyroxenite at the base overlain by the layered and foliated gabbro.
The second type recognized in the mafic-ultramafic bodies is dominated by variably metamorphosed ultramafic rocks (lherzolite, harzburgite, wehrlite, dunite, and pyroxenite; Fig.
Occurrences of major mafic-ultramafic bodies in the northern Dashwoods Subzone # (a) Location Lithology Mineralogy (b) 1 Puddle Pond Troctolite, ol-gabbro, Varying amounts of gabbro, hbl gabbro, Ol+Pl+Cpx+Hbl+Opx+/-Bt# ol-norite 2 John's Brook Gabbro, hbl-gabbro Cpx+Pl+Hbl# Lake gabbro 3 Whaleback Lherzolite, dunite, Relic Ol+Cpx+opx; Pond websterite, wehrlite, Tr+Chl+Srp+Car; Hbl+Pl# metagabbro 4 W of Silver Dunite, wehrlite, Relic O1+Cpx+Opx+Cr; Pond harzburgite, Tr+Chl+Srp+Car; Am+Chl pyroxenite, gabbro.
The Union Bay prospect hosts a zoned ultramatic/mafic complex that ranges from dunite in the core on the southeastern side of the complex, to wehrlite
and magnetite-bearing olivine clinopyroxenite, to hornblendite and gabbro in the margins.
The crust of the Muslim Bagh ophiolite is only exposed in STGM and consists of cumulate dunite, wehrlite and pyroxenite at the base, overlain by the layered and foliated gabbro.
Wehrlite is medium-coarse-grained and shows granular porphyritic and hypidiomorphic texture (Fig.
Rock types sampled in the Duck Lake Pluton include gabbro, orthopyroxene gabbro, gabbronorite, olivine gabbronorite, anorthosite, dunite, and wehrlite
(Grammatikopoulos 1992; White 1996).
It comprises of cyclic successions of layered dunite, wehrlite
, pyroxenite and both layered and foliated gabbro.
1 GPa and 1250 [degrees]C whereas Cr-diopside -- type 2 glass pairs in wehrlite
formed at 0.
The ultramafic rocks consist predominantly of harzburgite, followed by wehrlite
3) Peridotites: serpentinized harzburgites, dunites, and minor wehrlites