Fact Sheet for Deposit Area 1644

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 1644 - 046
	(Last updated 05.nov.2001)

Name of Deposit Area : Røhovda

(Object Id : 1644,046,00,00)

Location

County :

Sør-Trøndelag (16)

Municipality :

Holtålen (1644)

Map 1:50000:

Haltdalen (1620-1)

Map 1:250000:

Røros

Marking point:

Longitude:

11.0124790

Latitude:

62.7787070

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

602695 m.

Y-coord:

6962537 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Sulphides
			Element(s):	Fe sulphide

Production

Activity:	Pitting	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 30.okt.2001 by Terje Bjerkgård)

Operations

From - To Activity Comments

Pitting Company/Institution :?

1998 - 1998 Sampling Company/Institution :NGU mineralressurser

Mineralization

Era: Paleozoic Period: Ordovician

Dating: Method:

Genesis: Volcex Form: Layer

Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)

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

Strike/Dip: 31 / 64 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex:

Igneous complex:

Group: Gula group Formation: Åsli Formation

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Chlorite Major mineral (>10%)

Gangue mineral Garnet Subordinate mineral (1-10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Chalcopyrite Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Host rock Biotite-amphibole schist Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Structures

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

Host rock Foliation Strike/Dip :31 / 64 Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

Skjerpet ligger i nordøstsiden og i den bratteste delen av Røhovda ca. 1040 m.o.h. Det består av en 34 meter lang røskegrøft orientert i øst-vest retning (115 grader). Grøfta er hele veien 0.5-0.75 m dyp. Det er sprengt litt i den vestligste enden av grøfta hvor hovedmineraliseringen finnes. Mineraliseringen består av rik impregnasjon av magnetkis, dels i form av cm-tykke massive bånd parallell foliasjonen i en matriks av kloritt, biotitt og grønn amfibol, dels som uregelmessige slirer og årer i kvarts (prøver ST0391.01 og 02). Enkelte små aggregater av kobberkis forekommer i de mer massive magnetkisbåndene. Den mineraliserte sonen har en mektighet på ca. 3 meter og er omgitt av finkornet biotitt-amfibolskifer, sannsynligvis metabasalt. Det er også en 25 cm mineralisert sone 8 m fra østenden av grøfta. Mineraliseringen her består av semimassiv magnetkis med noe kobberkis omgitt av granatholdig biotitt-kloritt-amfibolskifer (prøve ST0391.03).

Fieldsamples

Sample No. Sample type Miscellanrous

ST0391.01 Dump

Sampler :T. Bjerkgård/...Stored :Løkken/...Size(kg) :3

Comment :Very finegrained pyrrhotite in rich impregnation in biotite-quartz matrix and contains also a 2-3 mm massive pyrrhotite layer with some small aggregates of chalcopyrite.

No. of registrated element analyses = 1

ST0391.02 Bedrock

Sampler :T. Bjerkgård/...Stored :Løkken/...Size(kg) :3

Comment :Rich impregnation of thin (0.1 mm) streaks of pyrrhotite in amphibole-biotite-chlorite schist. Frequent mm garnets.

No. of registrated element analyses = 1

ST0391.03 Bedrock

Sampler :T. Bjerkgård/...Stored :Løkken/...Size(kg) :3

Comment :Layer of semimassive pyrrhotite with some chalcopyrite surrounded by dark green biotite-chlorite-amphibole schist. Some garnets. Amphibole in needles of 1-2 mm lengths.

No. of registrated element analyses = 1

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

Name of Locality : Røhovda

(Object Id : 1644,046,01,00)

Location

County : Sør-Trøndelag (16) Municipality : Holtålen (1644)

Map 1:50000: Haltdalen (1620-1) Map 1:250000: Røros

Marking point: Longitude: 11.0129020 Latitude: 62.7791500

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 602715 m. Y-coord: 6962587 m.

Commodity

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

Element(s):

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Operations

From - To Activity Comments

Pitting Company/Institution :?

1998 - 1998 Sampling Company/Institution :NGU mineralressurser

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Greenstone Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Structures

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

Host rock Foliation Strike/Dip :281 / 82 Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

En røsk langs strøket ca. 50 høydemeter lavere i terrenget enn hovedskjerpet. Røsken består av utsprengt materiale i opptil 0.5 kbm blokker, samt avflekking av berggrunnen mot vest i en lengde av 20-25 meter. Det meste av røsken består av grønnstein, mens mineralisering er blottlagt i de østligste 7-8 meter. Mineralisering består av flere soner i opptil 1 meters bredde med rik til semimassiv magnetkis i amfibol-kvartsskifer. Magnetkis opptrer i 0.1-0.5 mm korn i finkornet kvarts, dels med sub-mm amfibolnåler. Det er typisk en mm bånding pga. variasjon i kornstørrelse og mineralinnhold.

Fieldsamples

Sample No. Sample type Miscellanrous

ST0391.04 Bedrock

Sampler :T. Bjerkgård/...Stored :Løkken/...Size(kg) :3

Comment :Finegrained, mm-scale banded semimassive pyrrhotite in amphibole-quartz matrix.

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 1644 - 046 Røhovda

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#

ST0391.01 Dump 998 199 26 49 96 .6 25.0

ST0391.02 Bedrock 826 316 37 44 79 .4 11.0

ST0391.03 Bedrock 742 43 -3 67 88 -.3 117.0

ST0391.04 Bedrock 658 201 124 68 120 -.3 122.0

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

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

ST0391.01 4.0 12.0 -2 -.2 24 5.00 -3 -3 41

ST0391.02 9.0 10.0 -2 -.2 10 6.00 -3 -3 13

ST0391.03 2.0 18.0 8 -.2 20 1.00 -3 -3 34

ST0391.04 7.0 29.0 602 -.2 21 10.00 -3 -3 41

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

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

ST0391.01 10 1229 27.30 -2.00 -8.00 -2 30.0 14.00 -3

ST0391.02 4 2435 23.77 -2.00 -8.00 16 30.0 27.00 -3

ST0391.03 50 1478 20.62 -2.00 -8.00 -2 10.0 8.00 -3

ST0391.04 10 1352 30.11 2.00 -8.00 -2 31.0 21.00 -3

From - To	Activity	Comments
	Pitting	Company/Institution :?
1998 - 1998	Sampling	Company/Institution :NGU mineralressurser

Era:	Paleozoic	Period:	Ordovician
Dating:		Method:
Genesis:	Volcex	Form:	Layer
Main texture:	Banded	Min. distribution:	Semi-massive (20-50 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Trondheim Nappe Complex
	Tectonic complex:
	Igneous complex:

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

Relationship	Rock	Origin
Host rock	Biotite-amphibole schist	Extrusive Original rock :Basalt
		Metamorphic facies :Greenschist

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :31 / 64	Post-mineralisation ;...Effect :Controls

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
ST0391.01	Dump	998	199	26	49	96	.6	25.0
ST0391.02	Bedrock	826	316	37	44	79	.4	11.0
ST0391.03	Bedrock	742	43	-3	67	88	-.3	117.0
ST0391.04	Bedrock	658	201	124	68	120	-.3	122.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	V*
ST0391.01	4.0	12.0	-2	-.2	24	5.00	-3	-3	41
ST0391.02	9.0	10.0	-2	-.2	10	6.00	-3	-3	13
ST0391.03	2.0	18.0	8	-.2	20	1.00	-3	-3	34
ST0391.04	7.0	29.0	602	-.2	21	10.00	-3	-3	41

Sample No.	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*	B*
ST0391.01	10	1229	27.30	-2.00	-8.00	-2	30.0	14.00	-3
ST0391.02	4	2435	23.77	-2.00	-8.00	16	30.0	27.00	-3
ST0391.03	50	1478	20.62	-2.00	-8.00	-2	10.0	8.00	-3
ST0391.04	10	1352	30.11	2.00	-8.00	-2	31.0	21.00	-3