Fact Sheet for Deposit Area 1665

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 1665 - 015
	(Last updated 06.mai.2002)

Name of Deposit Area : Råvvåtjørnbekken

(Object Id : 1665,015,00,00)

Location

County :

Sør-Trøndelag (16)

Municipality :

Tydal (1665)

Map 1:50000:

Essandsjøen (1721-2)

Map 1:250000:

Trondheim

Marking point:

Longitude:

11.8596670

Latitude:

63.0129330

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

644750 m.

Y-coord:

6990250 m.

Commodity

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

Production

Activity:	Pitting	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:	100 m3

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 06.mai.2002 by Jan Sverre Sandstad)

Operations

From - To Activity Comments

1999 - 1999 Sampling Company/Institution :NGU

Mineralization

Era: Paleozoic Period:

Dating: Method:

Genesis: Volcex Form: Irregular

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

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

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period:

Province: Caledonides

Geotec.unit: Remsklepp Nappe Complex

Tectonic complex: Humelfjell Nappe

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Subordinate mineral (1-10%)

Gangue mineral Feldspar Subordinate mineral (1-10%)

Gangue mineral Muscovite Subordinate mineral (1-10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Kvartsittisk sandstein Sedimentary
Original rock :Greywacke

Metamorphic facies :Amphibolite

Structures

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

Host rock Foliation Strike/Dip :193 / 25 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Forekomsten ligger 3 km vest for Brokksjøvola, ved en sti på østsida av Råvvåtjørnbekken i åpent, myrlendt fjellterreng. Skjerpet er 4x4 m stort med en 2-3 m høy skjæring i sørøst og 120 m3 tipp i nordøst. Mineraliseringen ble mutet i 1900 av P. Birch i Selbu på vegne av Ingebrigt O. og Peder J. Østby. Skjerpet er trolig eldre. Vertsbergarten er en gråhvit, kvartsittisk sandstein med enkelte amfibol-rikere bånd. Malmen er i hovedsak svak til sterk disseminasjon av kobberkis og magnetkis med varierende mengder sinkblende og pyritt. Kobberkis og magnetkis opptrer dels i årer som skjærer foliasjonen, mens sinkblende danner linser parallelt denne. Malmsonas mektighet og orientering er vanskelig å bestemme. Forekomsten har likhetstrekk med mineraliseringene ved Langdalsvollen (ST0121) som ligger 4 km lengre vestnordvest.

Photo(s) from the Deposit area:

Photo no. 1 showing Hovedskjerpet, mot sør"

Fieldsamples

Sample No. Sample type Miscellanrous

ST0399.01 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Sterk disseminasjon til semi-massiv kobberkis-magnetkis-sinkblende i kvartsrik bergart

No. of registrated element analyses = 1

ST0399.02 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Årer/aggregater av kobberkis-magnetkis+sinkblende i kvartsrik bergart., rik Cu

No. of registrated element analyses = 1

ST0399.03 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Semi-massive bånd med pyritt+sinkblende+kobberkis+magnetkis i kvartsittisk bergart.

No. of registrated element analyses = 1

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

Name of Locality : Skjerp 1

(Object Id : 1665,015,01,00)

Location

County : Sør-Trøndelag (16) Municipality : Tydal (1665)

Map 1:50000: Essandsjøen (1721-2) Map 1:250000: Trondheim

Marking point: Longitude: 11.8590750 Latitude: 63.0129440

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 644719 m. Y-coord: 6990249 m.

Commodity

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

Element(s): Cu Zn Kis

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Operations

From - To Activity Comments

1999 - 1999 Sampling Company/Institution :NGU

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Feldspar Major mineral (>10%)

Gangue mineral Amphibole Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Host rock Kvartsittisk sandstein Sedimentary
Original rock :Greywacke

Metamorphic facies :Amphibolite

Structures

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

Host rock Foliation Strike/Dip :175 / 45 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Skjerpet ligger 15 m vest for hovedforekomsten og består av en 2x2 m grop med en opptil 1 m høy skjæring i sør. Pyritt er dominerende sulfid i grågrønn, kvartsittisk sandstein, mens kobberkis opptrer i mindre mengder. Sulfidene opptrer i aggregater og danner opptil 10 cm tykke og få dm lange mineraliserte linser parallelt foliasjonen.

Photo(s) from the Deposit area:

Photo no. 1 showing Vestskjerpet, mot sør"

Fieldsamples

Sample No. Sample type Miscellanrous

ST0399.04 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Pyritt+kobberkis strenger/aggregater i sandstein

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 1665 - 015 Råvvåtjørnbekken

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#

ST0399.01 Dump 27934 1177 2 417 76 10.2 58.0

ST0399.02 Dump 39161 1282 2 243 45 12.2 579.0

ST0399.03 Dump 4238 10543 7 76 11 .6 19.0

ST0399.04 Dump 14815 158 2 106 18 7.2 79.0

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

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

ST0399.01 .5 1.0 2 7.1 3 2.00 9 23 11.09

ST0399.02 .5 2.0 3 10.0 3 5.00 5 24 7.65

ST0399.03 .5 .5 1 41.4 3 3.00 3 4 5.12

ST0399.04 .5 1.0 4 1.5 3 7.00 3 12 4.23

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

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

ST0399.01 7 9 344 18.86 8.00 8.00 1 47.0 24.00

ST0399.02 7 19 379 11.67 8.00 4.00 1 58.0 24.00

ST0399.03 16 12 391 6.06 6.00 4.00 4 33.0 10.00

ST0399.04 15 15 315 7.95 16.00 8.00 4 84.0 9.00

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

Sample No. B*

ST0399.01 4

ST0399.02 2

ST0399.03 3

ST0399.04 2

	From - To	Activity	Comments
	1999 - 1999	Sampling	Company/Institution :NGU

Era:	Paleozoic	Period:
Dating:		Method:
Genesis:	Volcex	Form:	Irregular
Main texture:	Structureless	Min. distribution:	Disseminated (<20 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Remsklepp Nappe Complex
	Tectonic complex:	Humelfjell Nappe
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Amphibole	Subordinate mineral (1-10%)
Gangue mineral	Feldspar	Subordinate mineral (1-10%)
Gangue mineral	Muscovite	Subordinate mineral (1-10%)
Ore mineral	Sphalerite	Major mineral (>10%)
Ore mineral	Pyrrhotite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Major mineral (>10%)
Ore mineral	Pyrite	Major mineral (>10%)

Relationship	Rock	Origin
Host rock	Kvartsittisk sandstein	Sedimentary Original rock :Greywacke
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :193 / 25	Post-mineralisation ;...Effect :Modifies

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
ST0399.01	Dump	27934	1177	2	417	76	10.2	58.0
ST0399.02	Dump	39161	1282	2	243	45	12.2	579.0
ST0399.03	Dump	4238	10543	7	76	11	.6	19.0
ST0399.04	Dump	14815	158	2	106	18	7.2	79.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
ST0399.01	.5	1.0	2	7.1	3	2.00	9	23	11.09
ST0399.02	.5	2.0	3	10.0	3	5.00	5	24	7.65
ST0399.03	.5	.5	1	41.4	3	3.00	3	4	5.12
ST0399.04	.5	1.0	4	1.5	3	7.00	3	12	4.23

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
ST0399.01	7	9	344	18.86	8.00	8.00	1	47.0	24.00
ST0399.02	7	19	379	11.67	8.00	4.00	1	58.0	24.00
ST0399.03	16	12	391	6.06	6.00	4.00	4	33.0	10.00
ST0399.04	15	15	315	7.95	16.00	8.00	4	84.0	9.00