Faktarka for Forekomstområde 819

					English version
	MALMDATABASEN
	Forekomstområde 819 - 011
	(Sist oppdatert 20.mar.2024)

Navn på deposit area : Søve

(Objekt Id : 0819,011,00,00)

Lokalisering

Fylke :

Telemark (08)

Kommune :

Nome (0819)

Kart 1:50000:

Nordagutu (1713-4)

Kart 1:250000:

Skien

Markeringspunkt:

Lengdegrad:

9.2849090

Breddegrad:

59.2819480

EU89-UTM Zone 32

X-koord:

516234 m.

Y-koord:

6571482 m.

Materialtype

	Hovedtype:	Spesialmetaller (Nb,Ta,Be,Li,Sc,REE)	Subtype:	Niob
			Element(s):	Nb Ta REE

Production

Activity:	Gruvedrift	Reserves:
Prod. method:	Dag- og underjordsdrift	Production:	1150 thousand tons
Prod. status:	Nedlagt	Volume of dump:

Betydning

Offentlig: Not Assessed (reg. 22.05.2015)

Economical: Kan være viktig , (Confirmed 07.des.2001 by Jan Sverre Sandstad)

Products

Element/product Crude ore grade or quality

NB 2800 ppm

Operations

From - To Activity Comments

1951 - 1965 Regular production Company/Institution :Norsk Bergverk AS

Mineralization

Era: Paleozoic Period: Cambrian

Dating: Method:

Genesis: Intrusivbreksje/diatrem Form:

Main texture: Strukturløs Min. distribution: Disseminert

Main grain size: Finkornet (<1 mm) Main alteration: Kalifeltspatomvandling

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Calcite Major mineral (>10%)

Gangue mineral Mica Subordinate mineral (1-10%)

Gangue mineral Apatite Subordinate mineral (1-10%)

Ore mineral Pyrochlore Major mineral (>10%)

Ore mineral Synchysite Accessory mineral (<1%)

Ore mineral Bastnäsite Accessory mineral (<1%)

Ore mineral Monazite Accessory mineral (<1%)

Ore mineral Parisite Accessory mineral (<1%)

Bibliography:

From NGU's Reference Archive:

Bergstøl, Sveinung; Svinndal, Sverre , 1960

Description of mines and deposits. Søve Niobium Mine, Fen area.

;Norges geologiske undersøkelse;EKSKURSJONSGUIDE; TIDSSKRIFTARTIKKEL;NGU; No.212m;16-25 pages

Bergstøl, Sveinung; Svinndal, Sverre , 1960

The carbonite and per-alkaline rocks of the Fen area. Petrology.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.208;99-105 pages

Sæther, Egil , 1957

The alkaline rock province of the Fen area in southern Norway.

;ARTIKKEL;Det Kongelige Norske Videnskabers Selskabs Skrifter; No.1;150 s. pages

Abstract:

An account is given of the field relationships, petrography, and mode of formation of alkaline silicate and carbonate rocks in the Cambro-Silurian Fen area in Telemarken, southwestern Norway. The Fen complex lies in Archean gneiss and gneissose granite and consists of the following rocks: granitic breccia; fenite (syenite); vipetoite, melteigite, ijolite, urtite (mafic alkalic rocks); damtjernite (hypabyssal rock); soevite (calcite rock); rauhaugite (ankerite rock); roedbergite or red rock (clacite-ankerite-hematite rock); and some dike rocks. Chemical rock and mineral analyses and spectrochemical analyses of oxide and sulfide minerals are presented, and optical data are given for many minerals. Substance transfers are computed for various metasomatic rock transformations in the area. Petrofabric diagrams of carbonatites are presented and interpreted. Genesis of the rocks is ascribed to two magmas poor in silica and rich in alkali metals, calcium, and carbon dioxide. Two separate cycles are established, each of which involved eruption of a mafic magma with subsequent very extensive hydrothermal activity (alkali metasomatism and carbonatization). The Fen area is compared with Alnø in Sweden, its close counterpart.

Lie, Anders; Østergaard, Claus , 2011

The Fen carbonatite complex, Ulefoss, South Norway. Results and conclusions from preliminary microscope and microprobe studies

;21st NORTH;RAPPORT;35 pages

Lie, Anders; Østergaard, Claus , 2011

The Fen carbonatite complex, Ulefoss, South Norway. Summary of historic work and data

;21st NORTH;RAPPORT;47 pages

Andersen, Tom , 1983

Iron ores in the Fen central complex, Telemark (S.Norway): Petrography, chemical evolution and conditions of equilibrium

;Norsk geologisk forening;TIDSSKRIFTARTIKKEL;Norsk geologisk tidsskrift; No.63 (2/3);73-82 pages

Abstract:

Hydrothermal iron ores from the Fen central complex may be classified according to their mineral assemblages as primary (magnetite +- pyrite +- anatase + calcite) or secondary (hematite +- goethite + calcite +- dolomite). Primary ores equilibrated between the hematite-magnetite and magnetite-pyrite-pyrrho- tite buffers, at temperatures below 600°C. Alteration to form the secondary parageneses took place above the hematite-magnetite buffer, probably at lower temperature.

Fieldsamples

Sample No. Sample type Miscellanrous

95394 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95395 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95397 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95398 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95399 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95400 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95401 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95402 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95403 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

95404 Bedrock

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

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

Analyse Results

from

Forekomstområde 819 - 011 Søve

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

Sample No. Sample Type Co* Ni* Ba* Sn* Ga* V* Cr*

95394 Bedrock 10 730 1 4.40 133 21

95395 Bedrock 11 17301 7 8.40 89 103

95397 Bedrock 29 53 212 5 11.80 151 123

95398 Bedrock 16 2073 1 10.40 134 116

95399 Bedrock 14 581 2 1.80 121

95400 Bedrock 4 62 0.50 11

95401 Bedrock 8 916 0.60 83

95402 Bedrock 7 6941 6.90 77

95403 Bedrock 13 642 1.60 18 21

95404 Bedrock 5 83 2 2.80 28 41

------------------

Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*

95394 17.80 1.30 3.0 3920.7 58.3 259 59.50 6.90

95395 782.30 3.70 5 3.2 1885.1 116.8 116 706.30 12.40

95397 1080.10 22.90 12 1.0 304.0 366.5 177 840.80 3.70

95398 1470.60 3.40 11 0.5 140.2 263.6 175 667.80 0.40

95399 19.30 0.90 1.0 3789.7 69.3 74 46.00 4.60

95400 63.70 0.80 1 0.3 3800.9 24.8 50 2735.90 10.70

95401 28.60 113.60 6.0 4523.4 66.3 17 328.60 81.30

95402 67.00 104.80 1 27.8 2938.1 138.9 365 421.50 58.30

95403 98.20 18.70 1 1.3 5147.8 83.6 64 821.50 6.00

95404 106.80 5.70 1 0.5 430.8 46.1 13 302.90 3.10

------------------

Sample No. Cs* La* Ce* Pr* Nd* Sm* Eu* Gd* Tb*

95394 0.30 269.50 527.20 60.24 218.50 32.87 9.36 24.83 2.68

95395 0.80 1516.20 2906.30 338.52 1269.70 237.85 64.87 137.05 11.00

95397 432.40 1066.50 163.27 808.70 231.68 54.55 148.03 15.09

95398 0.10 1897.60 6680.90 1111.09 5046.40 546.73 94.51 163.71 10.31

95399 262.60 544.40 67.23 256.60 40.83 11.77 31.02 3.41

95400 137.80 313.40 38.75 140.50 21.92 5.92 14.93 1.50

95401 0.20 228.80 500.00 61.95 239.00 38.52 11.10 28.68 3.27

95402 0.20 541.90 1163.50 145.48 537.10 82.08 22.62 59.80 6.87

95403 0.30 1066.70 1778.80 209.41 813.20 139.91 31.32 62.38 4.51

95404 3289.60 4894.60 448.13 1334.30 116.53 14.30 56.96 3.49

------------------

Sample No. Dy* Ho* Er* Tm* Yb* Lu* Be* Hf*

95394 12.82 1.93 4.89 0.61 3.70 0.50 1 2.00

95395 40.77 4.15 9.04 1.41 9.63 1.23 2 3.10

95397 70.77 11.10 27.45 3.90 23.59 3.27 24 9.40

95398 44.92 5.62 15.73 2.22 13.43 1.79 9 2.30

95399 15.96 2.35 5.44 0.65 3.59 0.46 0.50

95400 6.40 0.96 2.14 0.25 1.28 0.15 0.90

95401 16.29 2.23 5.30 0.66 4.25 0.47 0.50

95402 32.95 5.00 12.00 1.47 8.21 1.06 3.50

95403 18.87 2.20 5.72 0.88 5.89 0.81 0.90

95404 12.41 0.99 2.13 0.32 2.28 0.26

Oxide analyses
( All values are in % )

Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO Na2O

95394 Bedrock 2.08 0.32 0.18 6.30 0.22 2.80 0.13

95395 Bedrock 5.02 1.67 0.71 16.49 1.83 10.36 0.11

95397 Bedrock 18.35 4.01 0.54 15.16 0.34 2.60 0.05

95398 Bedrock 2.05 0.71 0.07 90.39 0.54 0.54

95399 Bedrock 0.65 0.27 0.17 5.61 0.18 2.03 0.03

95400 Bedrock 0.75 0.02 3.42 0.60 17.06 0.01

95401 Bedrock 1.39 0.52 0.25 4.10 0.23 2.96 0.03

95402 Bedrock 9.73 2.47 0.56 5.58 0.35 6.09 0.08

95403 Bedrock 0.98 0.38 0.02 8.40 0.73 7.49 0.03

95404 Bedrock 1.47 0.58 0.01 1.98 0.32 0.84

------------------

Sample No. K2O P2O5 Loss Sum

95394 0.06 4.26 35.00 51.00

95395 0.07 0.24 35.70 72.00

95397 0.01 0.63 24.70 66.00

95398 0.02 0.67 0.30 95.00

95399 0.03 3.35 37.20 50.00

95400 4.16 40.70 67.00

95401 0.20 3.67 37.80 51.00

95402 1.52 15.70 19.80 62.00

95403 0.04 11.26 27.60 57.00

95404 0.35 40.90 46.00

	From - To	Activity	Comments
	1951 - 1965	Regular production	Company/Institution :Norsk Bergverk AS

Era:	Paleozoic	Period:	Cambrian
Dating:		Method:
Genesis:	Intrusivbreksje/diatrem	Form:
Main texture:	Strukturløs	Min. distribution:	Disseminert

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

Relationship	Mineral	Amount
Gangue mineral	Calcite	Major mineral (>10%)
Gangue mineral	Mica	Subordinate mineral (1-10%)
Gangue mineral	Apatite	Subordinate mineral (1-10%)
Ore mineral	Pyrochlore	Major mineral (>10%)
Ore mineral	Synchysite	Accessory mineral (<1%)
Ore mineral	Bastnäsite	Accessory mineral (<1%)
Ore mineral	Monazite	Accessory mineral (<1%)
Ore mineral	Parisite	Accessory mineral (<1%)

Sample No.	Sample Type	Co*	Ni*	Ba*	Sn*	Ga*	V*	Cr*
95394	Bedrock	10		730	1	4.40	133	21
95395	Bedrock	11		17301	7	8.40	89	103
95397	Bedrock	29	53	212	5	11.80	151	123
95398	Bedrock	16		2073	1	10.40	134	116
95399	Bedrock	14		581	2	1.80	121
95400	Bedrock	4		62		0.50	11
95401	Bedrock	8		916		0.60	83
95402	Bedrock	7		6941		6.90	77
95403	Bedrock	13		642		1.60	18	21
95404	Bedrock	5		83	2	2.80	28	41

Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
95394	17.80	1.30		3.0	3920.7	58.3	259	59.50	6.90
95395	782.30	3.70	5	3.2	1885.1	116.8	116	706.30	12.40
95397	1080.10	22.90	12	1.0	304.0	366.5	177	840.80	3.70
95398	1470.60	3.40	11	0.5	140.2	263.6	175	667.80	0.40
95399	19.30	0.90		1.0	3789.7	69.3	74	46.00	4.60
95400	63.70	0.80	1	0.3	3800.9	24.8	50	2735.90	10.70
95401	28.60	113.60		6.0	4523.4	66.3	17	328.60	81.30
95402	67.00	104.80	1	27.8	2938.1	138.9	365	421.50	58.30
95403	98.20	18.70	1	1.3	5147.8	83.6	64	821.50	6.00
95404	106.80	5.70	1	0.5	430.8	46.1	13	302.90	3.10

Sample No.	Cs*	La*	Ce*	Pr*	Nd*	Sm*	Eu*	Gd*	Tb*
95394	0.30	269.50	527.20	60.24	218.50	32.87	9.36	24.83	2.68
95395	0.80	1516.20	2906.30	338.52	1269.70	237.85	64.87	137.05	11.00
95397		432.40	1066.50	163.27	808.70	231.68	54.55	148.03	15.09
95398	0.10	1897.60	6680.90	1111.09	5046.40	546.73	94.51	163.71	10.31
95399		262.60	544.40	67.23	256.60	40.83	11.77	31.02	3.41
95400		137.80	313.40	38.75	140.50	21.92	5.92	14.93	1.50
95401	0.20	228.80	500.00	61.95	239.00	38.52	11.10	28.68	3.27
95402	0.20	541.90	1163.50	145.48	537.10	82.08	22.62	59.80	6.87
95403	0.30	1066.70	1778.80	209.41	813.20	139.91	31.32	62.38	4.51
95404		3289.60	4894.60	448.13	1334.30	116.53	14.30	56.96	3.49

Sample No.	Dy*	Ho*	Er*	Tm*	Yb*	Lu*	Be*	Hf*
95394	12.82	1.93	4.89	0.61	3.70	0.50	1	2.00
95395	40.77	4.15	9.04	1.41	9.63	1.23	2	3.10
95397	70.77	11.10	27.45	3.90	23.59	3.27	24	9.40
95398	44.92	5.62	15.73	2.22	13.43	1.79	9	2.30
95399	15.96	2.35	5.44	0.65	3.59	0.46		0.50
95400	6.40	0.96	2.14	0.25	1.28	0.15		0.90
95401	16.29	2.23	5.30	0.66	4.25	0.47		0.50
95402	32.95	5.00	12.00	1.47	8.21	1.06		3.50
95403	18.87	2.20	5.72	0.88	5.89	0.81		0.90
95404	12.41	0.99	2.13	0.32	2.28	0.26

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	Na2O
95394	Bedrock	2.08	0.32	0.18	6.30	0.22	2.80	0.13
95395	Bedrock	5.02	1.67	0.71	16.49	1.83	10.36	0.11
95397	Bedrock	18.35	4.01	0.54	15.16	0.34	2.60	0.05
95398	Bedrock	2.05	0.71	0.07	90.39	0.54	0.54
95399	Bedrock	0.65	0.27	0.17	5.61	0.18	2.03	0.03
95400	Bedrock	0.75		0.02	3.42	0.60	17.06	0.01
95401	Bedrock	1.39	0.52	0.25	4.10	0.23	2.96	0.03
95402	Bedrock	9.73	2.47	0.56	5.58	0.35	6.09	0.08
95403	Bedrock	0.98	0.38	0.02	8.40	0.73	7.49	0.03
95404	Bedrock	1.47	0.58	0.01	1.98	0.32	0.84

Sample No.	K2O	P2O5	Loss	Sum
95394	0.06	4.26	35.00	51.00
95395	0.07	0.24	35.70	72.00
95397	0.01	0.63	24.70	66.00
95398	0.02	0.67	0.30	95.00
95399	0.03	3.35	37.20	50.00
95400		4.16	40.70	67.00
95401	0.20	3.67	37.80	51.00
95402	1.52	15.70	19.80	62.00
95403	0.04	11.26	27.60	57.00
95404		0.35	40.90	46.00