Ann: Green Niobium-REE Mineralisation Expands, page-37

Reply to @2ic
Pretty much on the same page with different perspectives and knowledge levels.

The Luni deposit, as you are aware, has two shallow (<=100m vertical) SG (Supergene High Grade?) blankets The early seismic seems to have picked this out above the fresh basement. Local example.
I haven't seen a detail reconciliation of Luni results with the drilling. Suspect it is reasonable with some of the depth difference, perhaps all, related in some way to faulting of the carbonatite. Since weathering will post date the faulting by a large period of time I do wonder what might have happened.





Seems the shallower zone may be less well developed at Green. Probably exists at Emily. Maybe no good reason to do passive seismic at targets with grid pattern aircore.

Strip ratio for the deeper zone is obviously higher and would need a grade/consistency factor sufficient to make it economic.

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What happens in the fresh zones of carbonatite. Not a huge amount of drilling into these in the West Arunta so far. Probably enough at Luni and scattered holes on ENR ground and Pachapadra.
I sorted my assay data base to filter out holes (inclined mainly) that went deeper than 120m and had grades over 1% Nb2O5. Quite a long list.

	Hole ID	From (m)	To (m)	Interval (m)	Nb_{2} O_{5} (%)	TREO (%)
1	LUDD23015	220	221	1	1.03	0.25
2	LURCD23002	179.8	181	1.2	1.5	0.14
3	LUDD23004	176	178	2	1.34	0.11
4	LUDD23015	176	177	1	1.19	0.23
5	LURC23174	176	177	1	1.04	0.21
6	LURCD23002	175.2	176.3	1.2	1.22	0.25
7	LUDD23006	172.1	174.1	2	1.37	0.18
8	LURC23175	170	171	1	1.60	2.70
9	LURCD23115	169.9	173.8	3.9	2.03	0.29
10	LUDD23001	167.74	170.55	2.81	3.09	0.13
11	LUDD23015	162	164	2	1.15	0.16
12	LUDD23017	161.6	162.9	1.3	1.33	0.25
13	LURCD23115	157.2	165.8	8.6	1.46	0.36
14	LUDD23015	157	158	1	1.35	0.13
15	LUDD23001	156.29	163.73	7.44	2.9	0.37
16	LURC23174	153	154	1	1.08	0.13
17	LURC23175	153	159	6	1.41	1.66
18	LUDD23031	151.4	155	3.6	1.16	0.29
19	LUDD23016	150.5	155.7	5.2	1.77	1.14
20	LUDD23016	149.9	156	6.2	1.67	0.99
21	LURC23236	145	146	1	1.06	0.71
22	LURC23242	144	145	1	1.07	0.19
23	LURC23057	143	149	6	1.24	0.85
24	LURC23105	143	144	1	1.26	0.23
25	LUDD23032	140	145	5	1.09	0.33
26	LUDD23024	136.0	137.0	1.0	1.03	0.17
27	LURC23063	136	137	1	1.23	0.27
28	LUDD23025	133.8	145.4	11.6	2.47	1.79
29	LURCD23042	133.6	133.9	0.3	1.07	1.51
30	LURC23068	132	135	3	1.47	0.11
31	LURCD23092	128.6	130	1.5	1.56	0.07
32	LURC23174	127	139	12	3.03	0.45
33	LURC23247	127	128	1	1.09	0.37
34	LUDD23027	126.8	134	7.2	1.28	0.15
35	LUDD23007	126.6	166.7	40.1	3.19	0.31
36	LUDD23031	126	136.3	10.3	5.17	1.06
37	LURC23118	125	126	1	1.01	0.34
38	LURC23232	125	126	1	1.46	0.2
39	LURC23005	124	144	20	2.52	0.75
40	LURC23242	124	128	4	1.54	0.3
41	LUDD23025	123.3	129.6	6.4	2.92	2.58
42	LURC23063	123	124	1	1.33	0.33
43	LURC23072	123	124	1	1.16	0.31
44	LURC23105	123	125	2	1.59	0.20
45	LURC23176	122	127	5	2.54	0.08
46	LUDD23014	121	123.4	2.4	1.55	0.17
47	LUDD23026	121	126.9	5.9	1.29	0.29
48	LURC23140	121	124	3	1.66	0.25
49	LURC23239	120	128	8	1.81	0.39

Doesn't include 2022 holes.
Yellow >1.5% and/or <10m

Relatively limited high grade Nb further than 150m down hole. Probably much a factor of limited drill hole depth.
There does seem to be a significant number of holes in the table around the 120-130+- depth. Transition zone or base of weathering.
A quick, near random check, showed deeper intersections common in the south (174'5; 115, 16). LUDD001 near the X may give some idea of what is present below 160m.

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Sulphide Queen and Mt Weld (pit anyway) are both around 650 m in maximum dimension.



Different types of deposits but extremely high grade.

Mt Weld has multiple other mineralised zones.

The exploration geo optimism translates this relatively small footprint in these world class deposit into the potential that exists around the 400m line spacing at Green. Any zone would need to be 2+% Nb and 20+- thick to make a large impact. Has drilling density precluded this? Probably but not totally with more to come from the east.

Lunch time called.

GLTAH