Fact Sheet for <b>Deposit 4225

					Norsk versjon
	THE ORE DATABASE
	Deposit 4225 - 002 Flottorp
	(Object Id: 5029) (Last updated: 15.03.2024)

Location

County:

Agder

Municipality:

Lyngdal (4225)

Map 1:50000:

Bjelland (1411-1)

Map 1:250000:

Mandal

Coordinate system:

EU89-UTM Zone 32

East:

404979 m.

North:

6483260 m.

Longitude:

7.3705240

Latitude:

58.4796050

Show on map

Resource

	Resource Type:	Ferroalloys (Cr,Ni,Co,V,Mo,W)	Resource Subtype:	Molybdenium
			Element(s):	Mo

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

	Activity:	Mining	Reserves:
	Operating method:	Open pit and underground mining	Historical production:	44,4 thousand tons

Products

Element/product Crude ore grade or quality Reg. date

Mo 0,2 % 13.03.2024

MoS2 0.225 % 07.01.2022

Operations

From - To Activity Comments

1916 - 1919 Regular production Company/Institution :A/S Undalen Molybdengruber

1941 - 1942 Detail mapping Company/Institution :Raffineringsverket A/S

Mineralization

Era: Proterozoic Period: Neoproterozoic

Dating: 980 million year Method:

Genesis: Form: Irregular

Main texture: Structureless Min. distribution: Disseminated (<20 % ore minerals)

Main grain size: Very unevenly grained Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Proterozoic Period: Mesoproterozoic

Province: South Norwegian Basement Province

Geotec.unit: Agder Complex

Tectonic complex: Sirdal Magmatic Belt

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Feldspar Major mineral (>10%)

Gangue mineral Biotite Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Ore mineral Molybdenite Major mineral (>10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Host rock Biotite gneiss

Metamorphic facies :Amphibolite

Wall rock Granite Intrusive
Original rock :Granite

Information(s) in free text format

Free text

In the period 1916–1919, around 48 000 t of ore with varying grades, 0.13 to 0.23 % MoS2, was produced from the two mines: Øvre and Ytre Flottorp (Undal) (olmsen 1961). Total recorded production of concentrate of molybdenite is 78 t (30-75 % MoS2, corresponding to 33 t of 100% MoS2, Bugge 1j963). The molybdenite occurrences are associated bands of 'amphibolitic', biotite-rich gneiss within granite/granitic gneiss. Mo-mineralisations occur in thin, molybdenite-bearing quartz and pegmatitic veins within the mafic gneiss and disseminations and joints of molybdenite enveloping the veins (Bugge 1963).

Bibliography:

From NGU's Reference Archive:

Bugge, Arne , 1963

Norges molybdenforekomster.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.217;1-134 pages

Abstract:

The ore fields and individual deposits which are mentioned in the text are shown on the map, figure 2. For those areas where the deposits lie so close together that they cannot be shown separately on this map, detail maps have been drawn on larger scales. In the descriptions there will also be found special maps covering the most important molybdenum areas. An index of the deposits which are mentioned is arranged both alphabetically and according to the numbers on the map. The majority, including the most important, of the ore deposits in Southern Norway lie within a marked zone, which is shown on the map, figure 3. At varying periods of time different metals have characterised the long zone of ore deposits: titanium in the southwest, then molybdenum in the area from Gursli to Knaben, copper and molybdenum in Telemark, silver, zinc and lead from Kongsberg eastwards, and further to the east, molybdenum again. From the map, figure 4, it can be seen that the most important groups of deposits are situated to both sides of the granite-gneiss area of the mountanious region of Southern Norway and that they lie in migmatised gneisses along the southwest side and in the schists and quartzites of the Telemark supracrustal suite along the northeast side.

Carstens, C. W.; Bjørlykke, H. , 1942

Flottorp molybdenskjerp.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1409;12 pages

Abstract:

Rapporten inneholder: 1. Kort malmgeologisk beskrivelse av Flottorp molybdenforekomst (4 s). 2. Malmgeologisk beskrivelse på bakgrunn av utførte diamantboringer (3 s). 3. Rapport over geologiske undersøkelser i 1942 av Flottorp Molybden- skjerp (3 s). 4. Sammendrag av utførte undersøkelser ved Flottorp molybdenforekomst (2s).

Fieldsamples

Sample No. Sample type Miscellanrous

JS-W2130 Dump

Sampler: J.S.Sandstad/...Stored: Løkken/...Size(kg): 2

Comment: Molybdenite veinlets in contact with quartz-feldspar vein in granite

No. of registrated element analyses = 1

JS-W2131 Dump

Sampler: J.S.Sandstad/...Stored: Løkken/...Size(kg): 2

Comment: Molybdenite stong dissemination/aggregates in 'tiger'gneiss

No. of registrated element analyses = 1

JS-W2132 Dump

Sampler: J.S.Sandstad/...Stored: Løkken/...Size(kg): 2

Comment: Molybdenite dissemination/aggregates in quartz-feldspar vein

No. of registrated element analyses = 1

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

Name of Locality: Undalen

(Object Id: 38444 2,01,00)

Location

County: Agder Municipality: Lyngdal (4225)

Map 1:50000: Bjelland (1411-1) Map 1:250000: Mandal

County: (Unavailable)

Resource

Resource Type: Ferroalloys (Cr,Ni,Co,V,Mo,W) Resource Subtype: Molybdenium

Element(s): Mo

Resources and production

Activity: Mining Reserves:

Operating method: Open pit mining Historical production:

Analyse Results

from

Deposit Area 4225 - 002 Flottorp

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

Sample No. Sample Type Cu* Zn* Pb* Co* Ni* Ag* Au#

JS-W2130 Dump 883 43 22 6 4 .5 -1.0

JS-W2131 Dump 997 52 25 6 6 .5 -1.0

JS-W2132 Dump 1960 81 32 12 6 .9 4.0

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

Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*

JS-W2130 -5.0 -1.0 1 .2 730 7370.00 1 -0 0

JS-W2131 8.0 1.0 0 .2 890 8700.00 2 0 0

JS-W2132 -5.0 -1.0 0 .6 960 9190.00 2 0 0

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

Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%

JS-W2130 3.00 17.95 0.09 0.05 1.00 29 8 229 2.47

JS-W2131 5.00 17.85 0.17 0.12 1.32 27 12 394 2.89

JS-W2132 5.00 23.00 0.18 0.12 1.82 34 11 367 4.06

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

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

JS-W2130 2.83 1.40 1 146.5 216.0 10.1 202 3.00 0.06

JS-W2131 14.35 1.00 1 179.5 154.5 21.1 171 16.00 0.46

JS-W2132 16.10 1.00 1 251.0 233.0 25.3 185 13.30 0.39

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

Sample No. Cs* La* Ce* Li* Be* Na* Mg* Al* P*

JS-W2130 0.70 22.00 42.50 5 2 21800 1900 63800 330

JS-W2131 1.06 54.60 117.00 8 2 17100 2700 58200 600

JS-W2132 1.58 72.60 160.00 10 2 22600 3600 75400 650

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

Sample No. K * Ca* Sc* Ti* Te* Hf* Re* Tl*

JS-W2130 33800 9900 1.90 1930 0.20 5.80 0 1

JS-W2131 36900 9100 4.50 2860 0.33 5.00 1 2

JS-W2132 47800 10500 4.40 3590 0.57 5.30 0 2

Element/product	Crude ore grade or quality	Reg. date
Mo	0,2 %	13.03.2024
MoS2	0.225 %	07.01.2022

From - To	Activity	Comments
1916 - 1919	Regular production	Company/Institution :A/S Undalen Molybdengruber
1941 - 1942	Detail mapping	Company/Institution :Raffineringsverket A/S

Era:	Proterozoic	Period:	Neoproterozoic
Dating:	980 million year	Method:
Genesis:		Form:	Irregular
Main texture:	Structureless	Min. distribution:	Disseminated (<20 % ore minerals)

	Province:	South Norwegian Basement Province
	Geotec.unit:	Agder Complex
	Tectonic complex:	Sirdal Magmatic Belt
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Feldspar	Major mineral (>10%)
Gangue mineral	Biotite	Major mineral (>10%)
Gangue mineral	Quartz	Major mineral (>10%)
Ore mineral	Molybdenite	Major mineral (>10%)
Ore mineral	Pyrite	Subordinate mineral (1-10%)
Ore mineral	Chalcopyrite	Subordinate mineral (1-10%)

Relationship	Rock	Origin
Host rock	Biotite gneiss
		Metamorphic facies :Amphibolite
Wall rock	Granite	Intrusive Original rock :Granite

	Abstract:
	Rapporten inneholder: 1. Kort malmgeologisk beskrivelse av Flottorp molybdenforekomst (4 s). 2. Malmgeologisk beskrivelse på bakgrunn av utførte diamantboringer (3 s). 3. Rapport over geologiske undersøkelser i 1942 av Flottorp Molybden- skjerp (3 s). 4. Sammendrag av utførte undersøkelser ved Flottorp molybdenforekomst (2s).

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS-W2130	Dump	883	43	22	6	4	.5	-1.0
JS-W2131	Dump	997	52	25	6	6	.5	-1.0
JS-W2132	Dump	1960	81	32	12	6	.9	4.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
JS-W2130	-5.0	-1.0	1	.2	730	7370.00	1	-0	0
JS-W2131	8.0	1.0	0	.2	890	8700.00	2	0	0
JS-W2132	-5.0	-1.0	0	.6	960	9190.00	2	0	0

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
JS-W2130	3.00	17.95	0.09	0.05	1.00	29	8	229	2.47
JS-W2131	5.00	17.85	0.17	0.12	1.32	27	12	394	2.89
JS-W2132	5.00	23.00	0.18	0.12	1.82	34	11	367	4.06

Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
JS-W2130	2.83	1.40	1	146.5	216.0	10.1	202	3.00	0.06
JS-W2131	14.35	1.00	1	179.5	154.5	21.1	171	16.00	0.46
JS-W2132	16.10	1.00	1	251.0	233.0	25.3	185	13.30	0.39

Sample No.	Cs*	La*	Ce*	Li*	Be*	Na*	Mg*	Al*	P*
JS-W2130	0.70	22.00	42.50	5	2	21800	1900	63800	330
JS-W2131	1.06	54.60	117.00	8	2	17100	2700	58200	600
JS-W2132	1.58	72.60	160.00	10	2	22600	3600	75400	650

Sample No.	K *	Ca*	Sc*	Ti*	Te*	Hf*	Re*	Tl*
JS-W2130	33800	9900	1.90	1930	0.20	5.80	0	1
JS-W2131	36900	9100	4.50	2860	0.33	5.00	1	2
JS-W2132	47800	10500	4.40	3590	0.57	5.30	0	2