Fact Sheet for <b>Occurence 5043 - 057 Bjørkvassdalen øst</b>

					Norsk versjon
	THE ORE DATABASE
	Occurence 5043 - 057 Bjørkvassdalen øst
	(Object Id: 351) (Last updated: 03.12.1998)

Location

County:

Trøndelag

Municipality:

Raarvihke (5043)

Map 1:50000:

Røyrvik (1924-4)

Map 1:250000:

Grong

Coordinate system:

EU89-UTM Zone 33

East:

420152 m.

North:

7190619 m.

Longitude:

13.3172570

Latitude:

64.8304410

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Resource

	Resource Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Resource Subtype:	Sulphides
			Element(s):	Kis

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

	Activity:	Exploration	Reserves:
	Operating method:		Historical production:

Operations

From - To Activity Comments

1991 - 1991 Sampling Company/Institution :NGU

Mineralization

Era: Paleozoic Period: Ordovician

Genesis: Volcex Form: Layer

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

Main grain size: Fine grained (< 1 mm) Main alteration: No country rock alteration

Strike/Dip: 100 / 80 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Køli Nappe Complex

Tectonic complex: Gjersvik Nappe

Igneous complex: Skorovass Complex

Group: Gjersvik Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Subordinate mineral (1-10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Magnetite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Host rock Blue quartzite Sedimentary
Original rock :Exhalite

Metamorphic facies :Greenschist

Wall rock Greenstone Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Structures

Location: Type: Orientation(360 gr.): Relation to min.:

Wall rock Foliation Strike/Dip :180 / 20 Post-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Beliggenhet ----------- I åpent terreng rundt det idylliske Sørvatnet finnes flere rustsoner i avstanden 0-200 m fra vannet. Særlig på vestsiden av vannet er det svært lite overdekke. Geologi ------- Rustsonene opptrer i en lys grønnstein langs kontakten til mørk grønnstein og skyldes flere magnetittbåndede vasskishorisonter. Sonen på østsiden av vannet opptrer over minst 50 m nær vannkanten, og her varierer tykkelsen mye langs strøket, men jevnt over er det ca. 0.5 m massiv kis. I sekvensen finnes også magnetittførende chert-lag (blåkvartsitt). I området NNØ herfra er det rapportert om en rekke slike vasskis-chert-horisonter. Forekomstene ble oppdaget i 1914.

Fieldsamples

Sample No. Sample type Miscellanrous

LS91081 Bedrock

Sampler: Størseth, L.R.

Comment: Pyrite disseminations in greenstone.

No. of registrated element analyses = 1

LS91082 Bedrock

Sampler: Størseth, L.R.

Comment: Massive pyrite ore.

No. of registrated element analyses = 1

LS91083 Bedrock

Sampler: Størseth, L.R.

Comment: Pyrite bands in chert.

No. of registrated element analyses = 1

LS91084 Bedrock

Sampler: Størseth, L.R.

Comment: Fine grained, massive pyrite ore..

No. of registrated element analyses = 1

LS91088 Bedrock

Sampler: Størseth, L.R.

Comment: Pyrite-magnetite banded chert.

No. of registrated element analyses = 1

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

Name of Locality: Bjørkvassdalen vest

(Object Id: 524 57,01,00)

Location

County: Trøndelag Municipality: Raarvihke (5043)

Map 1:50000: Røyrvik (1924-4) Map 1:250000: Grong

Coordinate system: EU89-UTM Zone 33

East: 419812 m. North: 7190648 m.

Longitude: 13.3100790 Latitude: 64.8306270

Show on map

Resource

Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides

Element(s): Kis

Resources and production

Activity: Pitting Reserves:

Operating method: Historical production:

Operations

From - To Activity Comments

1991 - 1991 Sampling Company/Institution :NGU

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Subordinate mineral (1-10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Greenstone Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Information(s) in free text format

Free text

På vestsiden av vannet sees den mest markerte horisonten ca. 150 m ovenfor vannet der den er blottet flere 100 m langs strøket. Partier viser svovelkis kun disseminert eller som uregelmessige årer i tett chertaktig grønnstein. Vasskis sees også, men den er tynnere enn på østsiden av vannet.

Fieldsamples

Sample No. Sample type Miscellanrous

HK90-220 Bedrock

Sampler: Karlstrøm, H.

Comment: Pyrite dissemination in silicified greenstone.

No. of registrated element analyses = 1

HK90-221 Bedrock

Sampler: Karlstrøm, H.

Comment: Massive pyrite with quartz matrix, 5-15 cm thickness. Thin bands of sulphides in massive greenstone in the wall rock.

No. of registrated element analyses = 1

LS91085 Bedrock

Sampler: Størseth, L.R.

Comment: Banded pyrite ore.

No. of registrated element analyses = 1

LS91086 Bedrock

Sampler: Størseth, L.R.

Comment: Weak pyrite dissemination in pale greenstone.

No. of registrated element analyses = 1

LS91087 Bedrock

Sampler: Størseth, L.R.

Comment: Fine grained, massive pyrite ore.

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 5043 - 057 Bjørkvassdalen øst

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#

HK90-220 Bedrock 74 52 4 23 97 .3 5.0

HK90-221 Bedrock 242 73 12 18 21 .9 26.0

LS91081 Bedrock 89 433 2 2 24 .4 10.0

LS91082 Bedrock 384 147 20 11 34 .7 56.0

LS91083 Bedrock 32 58 14 7 27 .4 23.0

LS91084 Bedrock 17 31 12 5 26 1.1 102.0

LS91085 Bedrock 13 67 5 11 10 .2 11.0

LS91086 Bedrock 61 15 12 15 14 .7 33.0

LS91087 Bedrock 89 179 19 16 35 .8 102.0

LS91088 Bedrock 46 28 2 3 41 .4 19.0

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

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

HK90-220 1.0 2.0 6 .2 5 2.00 2 2 1.57

HK90-221 1.0 2.0 23 .8 12 1.00 2 2 23.01

LS91081 4.0 3.0 74 1.6 3 1.00 2 2 7.41

LS91082 3.0 6.0 197 .2 4 2.00 5 2 31.33

LS91083 3.0 1.0 89 .2 5 1.00 2 2 10.60

LS91084 5.0 4.0 201 .2 6 3.00 2 2 35.10

LS91085 1.0 1.0 12 .2 20 1.00 2 2 .73

LS91086 3.0 3.0 25 .2 6 8.00 4 2 11.20

LS91087 6.0 4.0 65 .4 8 3.00 3 2 32.10

LS91088 1.0 1.0 52 .2 3 1.00 2 2 6.82

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

Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*

HK90-220 50 142 243 3.80 1.00 5.00 1 13.0 2.00

HK90-221 73 24 462 19.79 3.00 5.00 1 4.0 2.00

LS91081 72 19 5767 19.12 1.00 5.00 1 2.0 2.00

LS91082 57 15 963 23.23 1.00 5.00 2 2.0 2.00

LS91083 38 18 481 15.71 1.00 5.00 1 16.0 9.00

LS91084 4 5 295 19.75 1.00 5.00 1 1.0 2.00

LS91085 183 8 508 6.69 1.00 5.00 1 4.0 2.00

LS91086 21 6 171 14.35 1.00 5.00 1 1.0 2.00

LS91087 64 15 279 22.29 2.00 5.00 1 3.0 2.00

LS91088 75 13 131 21.18 1.00 5.00 1 5.0 4.00

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

Sample No. B*

HK90-220 3

HK90-221 2

LS91081 2

LS91082 4

LS91083 2

LS91084 3

LS91085 2

LS91086 4

LS91087 3

LS91088 2

	From - To	Activity	Comments
	1991 - 1991	Sampling	Company/Institution :NGU

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

	Province:	Caledonides
	Geotec.unit:	Køli Nappe Complex
	Tectonic complex:	Gjersvik Nappe
	Igneous complex:	Skorovass Complex

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

Relationship	Rock	Origin
Host rock	Blue quartzite	Sedimentary Original rock :Exhalite
		Metamorphic facies :Greenschist
Wall rock	Greenstone	Extrusive Original rock :Basalt
		Metamorphic facies :Greenschist

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :180 / 20	Post-mineralisation ;...Effect :None

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
HK90-220	Bedrock	74	52	4	23	97	.3	5.0
HK90-221	Bedrock	242	73	12	18	21	.9	26.0
LS91081	Bedrock	89	433	2	2	24	.4	10.0
LS91082	Bedrock	384	147	20	11	34	.7	56.0
LS91083	Bedrock	32	58	14	7	27	.4	23.0
LS91084	Bedrock	17	31	12	5	26	1.1	102.0
LS91085	Bedrock	13	67	5	11	10	.2	11.0
LS91086	Bedrock	61	15	12	15	14	.7	33.0
LS91087	Bedrock	89	179	19	16	35	.8	102.0
LS91088	Bedrock	46	28	2	3	41	.4	19.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
HK90-220	1.0	2.0	6	.2	5	2.00	2	2	1.57
HK90-221	1.0	2.0	23	.8	12	1.00	2	2	23.01
LS91081	4.0	3.0	74	1.6	3	1.00	2	2	7.41
LS91082	3.0	6.0	197	.2	4	2.00	5	2	31.33
LS91083	3.0	1.0	89	.2	5	1.00	2	2	10.60
LS91084	5.0	4.0	201	.2	6	3.00	2	2	35.10
LS91085	1.0	1.0	12	.2	20	1.00	2	2	.73
LS91086	3.0	3.0	25	.2	6	8.00	4	2	11.20
LS91087	6.0	4.0	65	.4	8	3.00	3	2	32.10
LS91088	1.0	1.0	52	.2	3	1.00	2	2	6.82

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
HK90-220	50	142	243	3.80	1.00	5.00	1	13.0	2.00
HK90-221	73	24	462	19.79	3.00	5.00	1	4.0	2.00
LS91081	72	19	5767	19.12	1.00	5.00	1	2.0	2.00
LS91082	57	15	963	23.23	1.00	5.00	2	2.0	2.00
LS91083	38	18	481	15.71	1.00	5.00	1	16.0	9.00
LS91084	4	5	295	19.75	1.00	5.00	1	1.0	2.00
LS91085	183	8	508	6.69	1.00	5.00	1	4.0	2.00
LS91086	21	6	171	14.35	1.00	5.00	1	1.0	2.00
LS91087	64	15	279	22.29	2.00	5.00	1	3.0	2.00
LS91088	75	13	131	21.18	1.00	5.00	1	5.0	4.00