Fact Sheet for <b>Occurence 5041 - 002 Djuptjørna</b>

					Norsk versjon
	THE ORE DATABASE
	Occurence 5041 - 002 Djuptjørna
	(Object Id: 214) (Last updated: 13.01.1999)

Location

County:

Trøndelag

Municipality:

Snåase (5041)

Map 1:50000:

Gjevsjøen (1823-2)

Map 1:250000:

Grong

Coordinate system:

EU89-UTM Zone 33

East:

405611 m.

North:

7118879 m.

Longitude:

13.0572820

Latitude:

64.1832870

Show on map

Resource

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

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Operations

From - To Activity Comments

1982 - 1982 Sampling

Mineralization

Era: Paleozoic Period:

Genesis: Hydrothermal vein Form: Layer

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

Main grain size: Medium grained (1-3 mm) Main alteration:

Strike/Dip: 170 / 22 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period:

Province: Caledonides

Geotec.unit: Formofoss Nappe Complex

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Ore mineral Galena Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Ore mineral Pyrrhotite Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Unknown Hydrotermal kvarts

Host rock Kalkstein Sedimentary
Original rock :Limestone

Metamorphic facies :Greenschist

Wall rock Kvartsitt Sedimentary
Original rock :Sandstone

Metamorphic facies :Greenschist

Structures

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

Host rock Foliation Strike/Dip :170 / 22 Post-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Forekomsten er avmerket på Foslies kart Jævsjø fra 1959. I 1982 foretok BP undersøkelser av forekomsten. I likhet med mineraliseringene ved Imbrikttjørna 10 km mot SSV er også denne mineraliseringen knyttet til innskjøvne sedimenthorisonter. Stratigrafisk posisjon er på grensen mellom Oldendekkets grovkornede granitt og finkornet rhyodasitt (leptitt) tilhørende Formofossdekket. Pb-Zn-Cu-mineraliseringen er knyttet til en opptil 6 m mektig og 200 m lang konkordant hydrotermalkvartshorisont som har en minst 1 m mektig kalkstein (prøve 01) i ligg, som igjen underligges av blåkvarts. I nord kiler finkornet, grå rhyodasitt (prøve 02) inn mellom kalksteinen og blåkvartsen. I den mineraliserte hydrotermalkvartsens heng opptrer finkornet rhyodasitt (prøve 04). I hydrotermalkvartsen er druserom med bergkrystaller vanlig, og det er en del innslag av tynne kalksteinshorisonter. Mineraliseringen opptrer i kvartsens heng, sannsynligvis over få dm mektighet. Blyglans er dominerende sulfid, stedvis en god del sinkblende, kobberkis, noe svovelkis og spor av magnetkis. Dominerende mineralfordeling er disseminasjon og smale årer (prøve 03), med opptil 10 cm mektige semimassive (prøve 07, 08 og 09) og massive partier (prøve 05 og 06) . Stedvis er den sulfidførende kvartsen breksjert (prøve 07). BP skal ha røsket og påvist mineralisering også sør for Djuptjønna (ca UTM 405650 7117100) i en parallell sedimenthorisont.

Fieldsamples

Sample No. Sample type Miscellanrous

NT0227.01 Bedrock

Sampler: Wilberg, R.

Comment: Kalkstein fra ligg.

No. of registrated element analyses = 1

NT0227.02 Bedrock

Sampler: Wilberg, R.

Comment: Fink. grå gneis fra ligg.

No. of registrated element analyses = 1

NT0227.03 Bedrock

Sampler: Wilberg, R.

Comment: Pb-Cu-Zn-diss. i kvarts.

No. of registrated element analyses = 1

NT0227.04 Bedrock

Sampler: Wilberg, R.

Comment: Fink. grå gneis fra heng.

No. of registrated element analyses = 1

NT0227.05 Bedrock

Sampler: Wilberg, R.

Comment: Massiv Pb-Zn-Cu-malm.

No. of registrated element analyses = 1

NT0227.06 Bedrock

Sampler: Wilberg, R.

Comment: Massiv Pb-Zn-Cu-malm.

No. of registrated element analyses = 1

NT0227.07 Bedrock

Sampler: Wilberg, R.

Comment: Breksjert hydrot. kv. med sulf. (semimass.).

No. of registrated element analyses = 1

NT0227.08 Bedrock

Sampler: Wilberg, R.

Comment: Semimassiv Pb-Zn-Cu-min. i hydrot. kv.

No. of registrated element analyses = 1

NT0227.09 Bedrock

Sampler: Wilberg, R.

Comment: Semimassiv Pb-Zn-Cu-min. i hydrot. kv.

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 5041 - 002 Djuptjørna

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#

NT0227.01 Bedrock 15 1325 933 6 7 4.4 4.0

NT0227.02 Bedrock 15 153 706 3 6 2.2 3.0

NT0227.03 Bedrock 3075 27600 18539 45 33 98.1 9.0

NT0227.04 Bedrock 17 114 293 3 7 .9 1.0

NT0227.05 Bedrock 838 18662 13014 152 26 293.7 344.0

NT0227.06 Bedrock 195 90 14747 182 29 112.3 86.0

NT0227.07 Bedrock 3114 9982 17304 114 45 38.2 115.0

NT0227.08 Bedrock 880 17502 19447 71 26 174.9 62.0

NT0227.09 Bedrock 3832 12357 12218 92 39 23.7 22.0

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

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

NT0227.01 3.0 3.0 14 3.8 4 1.00 3 7 .18

NT0227.02 4.0 1.0 2 .6 11 1.00 2 5 .06

NT0227.03 1.0 1.0 46 136.6 2 4.00 9 368 10.90

NT0227.04 1.0 1.0 2 .6 21 1.00 2 2 .04

NT0227.05 9.0 1.0 3 267.2 1 1.00 11 1512 33.40

NT0227.06 4.0 4.0 2 1.3 1 1.00 2 473 32.60

NT0227.07 8.0 9.0 9 54.6 2 4.00 11 175 25.70

NT0227.08 2.0 4.0 2 123.2 2 8.00 2 815 15.30

NT0227.09 3.0 2.0 2 60.8 1 4.00 9 65 16.82

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

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

NT0227.01 1 6 1750 .92 2.00 5.00 1 166.0 7.00

NT0227.02 1 20 105 .88 20.00 5.00 1 4.0 25.00

NT0227.03 1 6 107 9.02 1.00 5.00 5 5.0 2.00

NT0227.04 5 20 259 1.21 11.00 5.00 1 19.0 15.00

NT0227.05 1 7 608 34.95 1.00 5.00 2 1.0 2.00

NT0227.06 1 13 150 35.66 1.00 5.00 1 1.0 2.00

NT0227.07 1 14 292 24.85 1.00 5.00 1 1.0 2.00

NT0227.08 1 41 224 14.81 1.00 5.00 2 1.0 2.00

NT0227.09 1 9 202 22.60 1.00 5.00 1 1.0 2.00

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

Sample No. B*

NT0227.01 2

NT0227.02 2

NT0227.03 9

NT0227.04 3

NT0227.05 5

NT0227.06 2

NT0227.07 6

NT0227.08 2

NT0227.09 2

Era:	Paleozoic	Period:
Genesis:	Hydrothermal vein	Form:	Layer
Main texture:	Vein network	Min. distribution:	Disseminated (<20 % ore minerals)

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Ore mineral	Galena	Major mineral (>10%)
Ore mineral	Pyrite	Major mineral (>10%)
Ore mineral	Sphalerite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Subordinate mineral (1-10%)
Ore mineral	Pyrrhotite	Accessory mineral (<1%)

Relationship	Rock	Origin
Unknown	Hydrotermal kvarts
Host rock	Kalkstein	Sedimentary Original rock :Limestone
		Metamorphic facies :Greenschist
Wall rock	Kvartsitt	Sedimentary Original rock :Sandstone
		Metamorphic facies :Greenschist

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :170 / 22	Post-mineralisation ;...Effect :None

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
NT0227.01	Bedrock	15	1325	933	6	7	4.4	4.0
NT0227.02	Bedrock	15	153	706	3	6	2.2	3.0
NT0227.03	Bedrock	3075	27600	18539	45	33	98.1	9.0
NT0227.04	Bedrock	17	114	293	3	7	.9	1.0
NT0227.05	Bedrock	838	18662	13014	152	26	293.7	344.0
NT0227.06	Bedrock	195	90	14747	182	29	112.3	86.0
NT0227.07	Bedrock	3114	9982	17304	114	45	38.2	115.0
NT0227.08	Bedrock	880	17502	19447	71	26	174.9	62.0
NT0227.09	Bedrock	3832	12357	12218	92	39	23.7	22.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
NT0227.01	3.0	3.0	14	3.8	4	1.00	3	7	.18
NT0227.02	4.0	1.0	2	.6	11	1.00	2	5	.06
NT0227.03	1.0	1.0	46	136.6	2	4.00	9	368	10.90
NT0227.04	1.0	1.0	2	.6	21	1.00	2	2	.04
NT0227.05	9.0	1.0	3	267.2	1	1.00	11	1512	33.40
NT0227.06	4.0	4.0	2	1.3	1	1.00	2	473	32.60
NT0227.07	8.0	9.0	9	54.6	2	4.00	11	175	25.70
NT0227.08	2.0	4.0	2	123.2	2	8.00	2	815	15.30
NT0227.09	3.0	2.0	2	60.8	1	4.00	9	65	16.82

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
NT0227.01	1	6	1750	.92	2.00	5.00	1	166.0	7.00
NT0227.02	1	20	105	.88	20.00	5.00	1	4.0	25.00
NT0227.03	1	6	107	9.02	1.00	5.00	5	5.0	2.00
NT0227.04	5	20	259	1.21	11.00	5.00	1	19.0	15.00
NT0227.05	1	7	608	34.95	1.00	5.00	2	1.0	2.00
NT0227.06	1	13	150	35.66	1.00	5.00	1	1.0	2.00
NT0227.07	1	14	292	24.85	1.00	5.00	1	1.0	2.00
NT0227.08	1	41	224	14.81	1.00	5.00	2	1.0	2.00
NT0227.09	1	9	202	22.60	1.00	5.00	1	1.0	2.00