Exploration for porphyry-style copper mineralisation near Llandeloy
Exploration for porphyry-style copper mineralisation near Llandeloy
Exploration for porphyry-style copper mineralisation near Llandeloy
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F1g.28.<br />
BOREHOLE 8<br />
OPEN I HOLE I<br />
Q C S<br />
Ct C Q<br />
Q C ECt<br />
Q CCt E<br />
Q C<br />
Q<br />
H C Ct<br />
E<br />
C Q E<br />
Q E<br />
lost ___<br />
Water<br />
v,<br />
$2<br />
5'3<br />
$21<br />
CHEMICAL<br />
ANALYSIS<br />
P P ~ 1x1<br />
Cu Pb Zn Fe*<br />
120 20 120 45<br />
95 20 80 3 5<br />
115 20 80 42<br />
105 10 60 42<br />
90 10 80 12<br />
140 10 70 50<br />
350 20 110 65<br />
160 20 100 60<br />
* Hot HNO3 extractable<br />
+ H~lf detect~on l~mrt values<br />
subst~tutrd <strong>for</strong> levels less<br />
than the detect~on l~rn~t<br />
ffl<br />
W rx<br />
-<br />
L<br />
E<br />
z MAGNETIC SUSCEPTIBILITY<br />
0 10 20 30xl0~lun1ts<br />
Coarse-grained arkosic and<br />
quartzose sandstone<br />
Fine or niediuns-grained<br />
thinly bedded quartz wacke<br />
Qudrtz wacke with<br />
laminae of mudstone<br />
lnterbedded fine quartz wackt<br />
and siltstone or mudstone<br />
Tuffitic mudstone<br />
Porphyritic microtonalite<br />
Porphyritic quartz-niicrodiorit e<br />
----- M Magnetite band<br />
JW--+<br />
I I Intrusive breccia<br />
F Probable fault<br />
Q quartz<br />
Bdse of zone with<br />
weathering in joints<br />
E epidote<br />
C chlorlte<br />
Ct carbonate<br />
H hematite<br />
S sericite<br />
Cp chalcoy yrite<br />
sericite-chlorite<br />
-biotite, rdre<br />
epidote<br />
serlute-chlorite<br />
epidote
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