JERVOIS MINING NL    -    DRILLHOLE LOG															

DRILLHOLE:     NC14  					Logged by:       J.G.Purvis					Date:     1.12.99   		Depth:     51.0m  		Size:     NTW   	

					"Co-ords:   5 406565N / 425141E,   (4586N / 5700E Grid)"					RL:    665m  (est)		Dip:     - 50       		Azimuth:     033 AMG	

DRILL ADVANCE					LITHOLOGY										

From	To	Interval	Recovered	Lost	From	To	DESCRIPTION			ALTERATION		STRUCTURE		MINERALIZATION	

0	1.6	1.6	0	1.6	0	1.6	NO CORE.								

1.6	2.3	0.7	0.65	0.05											

2.3	3.8	1.5	1	0.5	1.6	7.9	OXIDIZED QUARTZOSE SANDSTONE.			Strongly oxidized:		Broken.    Abrupt irreg		Mild limonite stains to 3.8m &	

3.8	5.3	1.5	0.85	0.65			"Creamy-white, soft, crumbly & clayey."			leached & bleached.		contact to unox rock at		"7.0-7.6m (in latter, 2% py-po in "	

5.3	6.8	1.5	1.2	0.3			After fi-med gr altered qtz sst.			Original sst qtz-biotite		base.		small unox patches).	

6.8	8.3	1.5	1.45	0.05						altered.					

8.3	9.8	1.5	1.5	0											

9.8	11.3	1.5	1.5	0	7.9	16.3	SILICIFIED QUARTZ SANDSTONE.			Strong qtz>sericite alt.		Mildly fractured & broken.		7.9-11.5m: 3% py (+marcasite?)	

11.3	12.8	1.5	1.5	0			"Grey, hard, fi-coarse gr, massive. "			Trace biotite alt.		Very weak cleavage: 30/ 		"& minor po, mostly in dendritic"	

12.8	14.3	1.5	1.5	0			Numerous white clasts(?) to 20mm of identical					LCA @ 11.5m;  50/LCA		"dissem.     11.5-14.0m: 1% py,"	

14.3	15.8	1.5	1.5	0			sst .					at 15m.		dissem & veinlets.  Qtz-py veins	

15.8	17.3	1.5	1.5	0								Basal contact abrupt &		to 25mm @ 12.7-13m.	

17.3	18.8	1.5	1.4	0.1								irreg.		"14.0-15.8m:  1-2% py, dendritic. "	

18.8	20.3	1.5	1.4	0.1										15.8-16.3m:  3-5% coarse py. 	

20.3	21.8	1.5	1.5	0											

21.8	23.3	1.5	1.5	0	16.3	19.2	LEACHED PYRITIC CALC-SILICATE.			Strongly leached.		"Moderately broken, with"		16.3-17.85m:  5-7% dissem py.	

23.3	24.8	1.5	1.5	0			Creamy greenish-grey.     Medium grained   			Remnant qtz-chlorite		"crumbly zones, biggest "		17.85-18.8m:  1% py.	

24.8	26.3	1.5	1.5	0			porous qtzose sst with numerous crumbly 			alt in patches.		at base.		18.8-19.2m:  10-15% py (25%	

26.3	27.8	1.5	1.45	0.05			vuggy patches after carbonate.			Some pink colouration-		Abrupt basal contact 40/		core loss).	

27.8	29.3	1.5	1.5	0						(garnet &/or carbonate).		LCA.			

29.3	30.8	1.5	1.5	0											

30.8	32.3	1.5	1.5	0	19.2	24	SKARN.     Dark green & brown.   Med gr.			Intensely altered.		Small fault 20/LCA @		19.2-20.0m:  3-4% pyrite>mag	

32.3	33.8	1.5	1.5	0			"A variable weakly-banded interval, incl:  dark "					21.5m.      Moderately   		coarse dissem & bands 35/LCA.	

33.8	35.3	1.5	1.5	0			"ferromag-garnet skarn, qtz-chlorite skarn, &"					broken to 21.6m.   Weak 		"20.0-22.4m:   Minor py (+sp?),"	

35.3	36.8	1.5	1.5	0			qtz-biotite(+-chlorite & garnet) rock after altered					"banding 35-40/LCA, incl"		except 5-7% py (+sp or cassit) at	

36.8	38.3	1.5	1.5	0			qtzose sst.    					fine banding 40/LCA		20.85-21.1m.    22.4-24.0m: 1-2%	

38.3	39.8	1.5	1.5	0			Some yellowish-green sl leached cb(?) to 21.1m					 (after So?) at 20.6m.		"py, minor mag & sp.    3-4mm py-"	

39.8	41.3	1.5	1.5	0								Basal contact abrupt but		sp veinlet 45/LCA @ 23.5m;   2-3 	

41.3	42.7	1.4	1.4	0								irregular.		mm sp veinlet 80/LCA @ 23.6m	

42.7	44.2	1.5	1.5	0											

44.2	45.8	1.6	1.6	0	24	31.15	BIOTITIZED QUARTZOSE SANDSTONE.			Very strong biotitization		Common fine bedding: 		"24-26.5m:  2% py-sp, in bands //"	

															

JERVOIS MINING NL    -    DRILLHOLE LOG															

DRILLHOLE:     NC14   					Logged by:       J.G.Purvis					Date:     1.12.99  		Depth:     51.0m		Size:     NTW	

					"Co-ords:   5 406565N / 425141E,   (4586N / 5700E Grid)"					RL:    665m  (est)		Dip:     - 50    		Azimuth:     033 AMG  	

DRILL ADVANCE					LITHOLOGY										

From	To	Interval	Recovered	Lost	From	To	DESCRIPTION			ALTERATION		STRUCTURE		MINERALIZATION	

45.8	47.3	1.5	1.5	0			Dark brown.   Fine-med gr altered sandstone			& patchy qtz-chlorite alt		40/LCA.   Graded bedding		"So to 5mm, minor po & mag."	

47.3	48.8	1.5	1.5	0			with abundant detrital qtz.   			(best sp tends to be		fining uphole at 30.2m.		26.5-28.6m:  1% dissem po>py.	

48.8	51	2.2	2.2	0						assoc with py in latter.		Small fault 20/LCA at 		28.6-30.25m:  1% py>sp & po.	

										Po-mag is assoc with  		27.7m.		30.25-30.8m:  5% coarse dissem	

										biotite).		"Basal contact abrupt, "		 py>>po & sp.	

												35/LCA.		30.8-31.15m:  1-2% po-mag>py.	

															

					31.15	32.7	"PYRRHOTITE SKARN.     Green & brown, hard."			Intensely altered.		Unbroken.   		"31.15-32.15m:   5-30% po>py, "	

							"Composed mainly of qtz, light green ferromags"			Qtz-ferromag alt over-		"Basal contact abrupt, 45/"		"trace cp, dissem, sulphides"	

							& sulphides (mainly pyrrhotite).     Remnant 			prints & replaces qtz-		LCA.		decreasing with depth.	

							included biotitized qtz sst near both contacts			biotite.				32.15-32.7m:  3% po>py.	

							(eg: below 32.1m:  bx-like mixture of skarn								

							replacing biotitized sst).								

															

					32.7	37.4	BIOTITIZED SANDSTONE.			Strong biotitization.		Characteristic streaky		"1% py, mainly in patchy dissem,"	

							"Dark grey-brown, massive, unbroken."			Blotchy qtz-chlorite-cb		mineral lineation 40/LCA		some in high-angle fine veinlets.	

							"Fi-med gr sst, much less siliceous as that "			"alt, mainly below 35.3m"		Basal contact abrupt &		Trace dissem aspy around 35m	

							"above 31.1m, with fewer detrital qtz grains."					irregular.		& 37m.	

															

					37.4	39.1	"CALC-SILICATE.     Dark yellow, softish, slightly"			Strongly altered.		Crumbly in places		37.4-38.6m: 3-5% patchy dissem	

							oxidized & leached carbonate with patches of 					Basal contact highly		"py>>sp, (15% in 15cm zone at "	

							fi gr qtz.					irreg & diffuse.		38m).    Minor py below  38.6m.	

															

					39.1	51	ALTERED QUARTZ SANDSTONE.			Strong qtz-biotite+-chlor		Largely unbroken.		"To 47m:  Trace mag, py, po."	

							Pale brownish-grey.   Hard to very hard.			alt overprinted by patchy		"43m: bedding 65/LCA,"		42.4m: 2mm mag veinlet 50/LCA	

							"Massive fi-med gr altered qtz sst, becoming"			strong qtz-chlor+-cb.		mineral lineation 35/LCA		44.15m:  2x 5mm py-chlor>sp	

							"harder, more siliceous & increasingly thermally"			40.5m: 50mm irreg qtz		in opposite sense.		veinlets 45/LCA.	

							metamorphosed with depth - below 47m 			vein.				"47-51m:  patchy 1-2% py>po,"	

							rock is a hornfels.							"mostly dissem, locally 2-3% (eg:"	

														47.7-48.6m & 50-50.8m).	

							END  OF  HOLE								

															

															

