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	THE ORE DATABASE
	Deposit Area 1849 - 006
	(Last updated 23.okt.2024)

Importance

Public:

(No data)

Economical:

Minor interest , (Confirmed 23.okt.2024 by Havard Gautneb)

Mineralization

	Era:		Period:
	Dating:		Method:
	Genesis:		Form:
	Main texture:		Min. distribution:

Main grain size:

Main alteration:

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Period:

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex:

Group:

Formation:

Information(s) in free text format

Free text

The following comments are given bu Müller (2011) Several airborne-measured Th-radiation anomalies along the SW-NE striking Kjerrfjellet mountain ridge were the reason for the region being chosen as a target area. Figure 42 shows the radiation anomalies (yellow shaded areas), the hiking trail and sampling points. The TIB granite gneiss exposed along the hiking trail at Svarthammaren had a very low gammaradiation intensity of 150 to 200 cps. Almost exactly where the anomaly was entered, the radiation intensity of the granite gneiss increased to 500 cps. Four samples of medium-grained granite gneiss were taken (Fig. 43). The samples have a highly variable REO+Y2O3 of 0.014to 0.118 wt.% despite relatively consistent gamma-radiation signals (Figs. 40, 42). Only sample 24091004 show a strong enrichment of LREE and HREE compared to the average granite composition (Fig. 44). Samples 24091001 and -03 are strongly depleted in LREE probably due to the leaching of apatite during secondary overprint. Zr concentrations are 357 to 631 ppm, Th 14 to 40 ppm and U 3 to 8 ppm. The dominant accessory REE-bearing minerals are zircon (20-60 µm) and apatite (20-300 µm) (Fig. 45, Table 1). In addition almandine-like minerals with 1 wt.% P and Cl and 60 to 100 µm in size are common. The minerals form euhedral and zoned inclusions in biotite (Fig. 45b). Summarizing, the Kjerrfjellet granite gneiss has no potential for economic REE mineralisation. The airbornemeasured Th-radiation anomalies along the Kjerrfellet mountain ridge are so distinct because of the low radiation signal of the surrounding granite gneiss.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	24091001	Bedrock	Sampler :Axel M¿ller Comment :medium-grained biotite granite gneiss, non-mineralised, UTM east 544145, UTM north 7555005 No. of registrated element analyses = 1 No. of registrated oxide analyses = 1
	24091002	Bedrock	Sampler :Axel M¿ller Comment :medium-grained biotite granite gneiss, non-mineralised, UTM east 544242, UTM north 7555186 No. of registrated element analyses = 1 No. of registrated oxide analyses = 1
	24091003	Bedrock	Sampler :Axel M¿ller Comment :medium-grained biotite granitic gneiss, non-mineralised, UTM east 544103, UTM north 7555094 No. of registrated element analyses = 1 No. of registrated oxide analyses = 1
	24091004	Bedrock	Sampler :Axel M¿ller Comment :medium-grained biotite-rich granite gneiss, non-mineralised, UTM east 543823, UTM north 7554846 No. of registrated element analyses = 1 No. of registrated oxide analyses = 1

NB! All analyse values are shown at the end of the printout.:

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Analyse Results

from

Deposit Area 1849 - 006 Kjerrfjell

Element analyses

( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Au#	As*
24091001	Bedrock	2	64	3	2	0	-.5	1
24091002	Bedrock	1	77	6	3	0	-.5	2
24091003	Bedrock	3	80	5	3	1	-.5	1
24091004	Bedrock	-0	101	7	3	1	-.5	2

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Sample No.	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*	Se*	Ga*	V*
24091001	-.1	518	1.70	3	-0	-0	-0.50	21.50	12
24091002	-.1	625	1.70	4	-0	-0	-0.50	22.50	14
24091003	-.1	576	0.30	4	-0	-0	-0.50	23.10	12
24091004	-.1	522	2.50	3	-0	-0	0.50	22.30	15

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Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Cs*
24091001	14.40	3.20	-1	184.5	102.1	34.2	357	26.40	1.10
24091002	39.90	7.00	-1	228.8	117.0	53.7	441	32.10	1.50
24091003	30.50	3.90	-1	228.9	106.7	43.0	626	36.30	1.60
24091004	17.60	7.70	-1	262.0	95.6	94.5	632	32.60	2.00

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Sample No.	La*	Ce*	Pr*	Nd*	Sm*	Eu*	Gd*	Tb*	Dy*
24091001	9.50	29.40	3.41	15.10	3.84	0.41	3.53	0.72	4.59
24091002	102.80	218.10	19.75	65.00	10.96	1.07	8.85	1.50	8.86
24091003	7.50	25.80	3.72	17.20	5.18	0.52	5.52	1.06	6.69
24091004	186.60	411.40	44.91	163.30	27.04	2.07	22.58	3.49	19.08

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Sample No.	Ho*	Er*	Tm*	Yb*	Lu*	Be*	Hf*	Hg*	Tl*
24091001	1.16	4.11	0.68	4.94	0.83	4	9.40	-0	1
24091002	1.82	5.28	0.82	5.51	0.83	5	11.70	-0	1
24091003	1.41	4.44	0.72	4.88	0.73	5	17.60	-0	1
24091004	3.68	10.35	1.44	8.39	1.17	7	15.60	-0	1

Oxide analyses

( All values are in % )

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
24091001	Bedrock	71.01	14.09	0.44	3.58	0.08	0.50	1.08
24091002	Bedrock	69.44	14.09	0.51	4.09	0.08	0.50	1.35
24091003	Bedrock	69.08	14.43	0.53	4.13	0.07	0.51	1.03
24091004	Bedrock	69.58	13.19	0.55	5.35	0.08	1.11	0.71

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Sample No.	Na2O	K2O	P2O5	Loss	Sum
24091001	3.96	4.76	0.08	0.30	100.00
24091002	3.70	5.56	0.09	0.40	100.00
24091003	3.84	5.58	0.12	0.50	100.00
24091004	3.01	5.53	0.13	0.50	100.00

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The fact sheet was created on 22.11.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

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