Fact Sheet for <b>Occurence 4617 - 023 Jernsmauget</b>

					Norsk versjon
	THE ORE DATABASE
	Occurence 4617 - 023 Jernsmauget
	(Object Id: 4773) (Last updated: 05.01.2024)

Location

County:

Vestland

Municipality:

Kvinnherad (4617)

Map 1:50000:

Fusa (1215-3)

Map 1:250000:

Bergen

Coordinate system:

EU89-UTM Zone 32

East:

322169 m.

North:

6659477 m.

Longitude:

5.8076990

Latitude:

60.0338730

Show on map

Resource

	Resource Type:	Ferrous metals(Fe, Mn, Ti)	Resource Subtype:	Iron
			Element(s):	Fe Kis

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Historical:

Yes , (Confirmed 16.sep.2022 by Terje Bjerkgård)

Resources and production

	Activity:	Mining	Reserves:
	Operating method:	Open pit mining	Historical production:

Mineralization

Era: Paleozoic Period: Ordovician

Genesis: Volcex Form: Layer

Main texture: Massive Min. distribution: Massive (>50 % ore minerals)

Main grain size: Fine grained (< 1 mm) Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Hardangerfjord Nappe Complex

Tectonic complex: Varaldsøy Complex

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Gangue mineral Amphibole Accessory mineral (<1%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Greenschist Sedimentary
Original rock :Tuffite

Metamorphic facies :Greenschist

Information(s) in free text format

Free text

Jernsmauget består av to større vannfylte strosser i nordøstlig retning med en avstand på 10 meter. Den nordligste er fullstendig dominert av dels massiv magnetittmineralisering, mens den sørlige inneholder dels massiv pyritt. Det er også tynne pyrittbånd sammen med magnetitt i den nordlige sonen og noe magnetitt i den sørlige sonen. Grønnsteinen er omvandlet til klorittskifer med kvarts, dels med noe sericitt nær malmsonene. Sonen har et steilt fall mot sør (strøk/fall 075/75 grader). Den nordlige og magnetittdominerte gruva ble drevet i en kort periode fra 1642, i 1860-årene og mellom 1897 og 1912.Den pyrittdominerte sonen i den sørlige gruva ble drevet i 1860-årene. Det var ny prøvedrift på pyritt i 1950-årene og da ble blant annet jernbane i gruva og gruveveien rustet opp.

Photo(s) from the Deposit area:

Photo no. 1 showing Magnetittgruva"

Photo no. 2 showing Svovelkisgruva"

Photo no. 3 showing Magnetittmalm"

Photo no. 4 showing Svovelkismalm"

Fieldsamples

Sample No. Sample type Miscellanrous

JERNSMAUGET-01 Dump

Sampler: T. Bjerkgård

Comment: Massiv finkornet magnetitt med spredt pyritt i striper

No. of registrated element analyses = 1

JERNSMAUGET-02 Dump

Sampler: T. Bjerkgård

Comment: Diffust mm-cm båndet finkornet pyritt med tynne linser av magnetitt

No. of registrated element analyses = 1

JERNSMAUGET-03 Bedrock

Sampler: T. Bjerkgård

Comment: Massiv finkornet pyritt. Fra strossa i den sørlige gruva.

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 4617 - 023 Jernsmauget

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#

JERNSMAUGET-01 Dump 88 35 11 78 6 .6 45.0

JERNSMAUGET-02 Dump 114 21 67 353 9 3.3 159.0

JERNSMAUGET-03 Bedrock 9560 39 129 126 8 10.2 158.0

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

Sample No. As* Cd* Ba* Mo* Sn* Sb* Bi* Se* Ga*

JERNSMAUGET-01 16 .1 10 81.30 1 1 3 3.00 12.55

JERNSMAUGET-02 31 .1 -10 84.40 0 0 6 65.00 3.41

JERNSMAUGET-03 86 .5 -10 16.35 1 0 10 29.00 0.98

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

Sample No. Ge* In* S% V* Cr* Mn* Fe% Th* U*

JERNSMAUGET-01 1.04 0.01 2.75 52 2 229 49.99 0.02 0.10

JERNSMAUGET-02 0.29 0.06 9.99 15 2 112 39.80 0.01 -0.10

JERNSMAUGET-03 0.19 0.64 9.99 7 2 75 41.50 0.01 0.10

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

Sample No. W* Rb* Sr* Y* Zr* Nb* Ta* Cs* La*

JERNSMAUGET-01 1 0.1 0.4 0.9 -1 2.90 0.10 -0.05 -0.50

JERNSMAUGET-02 0 0.1 12.9 0.5 -1 0.20 -0.05 -0.05 -0.50

JERNSMAUGET-03 -0 -0.1 -0.2 0.5 -1 0.10 -0.05 -0.05 -0.50

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

Sample No. Ce* Li* Be* P* Sc* Ti* Te* Hf* Re*

JERNSMAUGET-01 0.29 1 1 -10 0.70 70 4.79 -0.10 0

JERNSMAUGET-02 0.27 1 0 -10 0.60 -50 13.60 -0.10 0

JERNSMAUGET-03 0.33 1 -0 -10 0.20 -50 15.65 -0.10 0

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

Sample No. Tl*

JERNSMAUGET-01 0

JERNSMAUGET-02 0

JERNSMAUGET-03 0

Era:	Paleozoic	Period:	Ordovician
Genesis:	Volcex	Form:	Layer
Main texture:	Massive	Min. distribution:	Massive (>50 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Hardangerfjord Nappe Complex
	Tectonic complex:	Varaldsøy Complex
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Chlorite	Subordinate mineral (1-10%)
Gangue mineral	Amphibole	Accessory mineral (<1%)
Ore mineral	Magnetite	Major mineral (>10%)
Ore mineral	Pyrite	Major mineral (>10%)

Relationship	Rock	Origin
Host rock	Greenschist	Sedimentary Original rock :Tuffite
		Metamorphic facies :Greenschist

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JERNSMAUGET-01	Dump	88	35	11	78	6	.6	45.0
JERNSMAUGET-02	Dump	114	21	67	353	9	3.3	159.0
JERNSMAUGET-03	Bedrock	9560	39	129	126	8	10.2	158.0

Sample No.	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*	Se*	Ga*
JERNSMAUGET-01	16	.1	10	81.30	1	1	3	3.00	12.55
JERNSMAUGET-02	31	.1	-10	84.40	0	0	6	65.00	3.41
JERNSMAUGET-03	86	.5	-10	16.35	1	0	10	29.00	0.98

Sample No.	Ge*	In*	S%	V*	Cr*	Mn*	Fe%	Th*	U*
JERNSMAUGET-01	1.04	0.01	2.75	52	2	229	49.99	0.02	0.10
JERNSMAUGET-02	0.29	0.06	9.99	15	2	112	39.80	0.01	-0.10
JERNSMAUGET-03	0.19	0.64	9.99	7	2	75	41.50	0.01	0.10

Sample No.	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*	Cs*	La*
JERNSMAUGET-01	1	0.1	0.4	0.9	-1	2.90	0.10	-0.05	-0.50
JERNSMAUGET-02	0	0.1	12.9	0.5	-1	0.20	-0.05	-0.05	-0.50
JERNSMAUGET-03	-0	-0.1	-0.2	0.5	-1	0.10	-0.05	-0.05	-0.50