Fact Sheet for <b>Occurence 5022

					Norsk versjon
	THE ORE DATABASE
	Occurence 5022 - 029 Nylykkja
	(Object Id: 4536) (Last updated: 01.07.1998)

Location

County:

Trøndelag

Municipality:

Rennebu (5022)

Map 1:50000:

Rennebu (1520-1)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

553528 m.

North:

6967267 m.

Longitude:

10.0507610

Latitude:

62.8316370

Show on map

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:	Pitting	Reserves:
	Operating method:		Historical production:

Operations

From - To Activity Comments

1997 - 1997 Sampling Company/Institution :NGU-Malmreg.

Mineralization

Genesis: Sedex Form:

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

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

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex: Gula Nappe

Igneous complex:

Group: Gula Formation: Undal

Mineralogy

Relationship Mineral Amount

Gangue mineral Graphite Major mineral (>10%)

Gangue mineral Quartz Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Sphalerite Accessory mineral (<1%)

Ore mineral Chalcopyrite Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Host rock Graphite schist Sedimentary
Original rock :Bituminous silty mudstone

Metamorphic facies :Greenschist

Information(s) in free text format

Description

Nilsen (1976) beskriver mineraliseringen ved Nylykkja: "Nylykkja skjerp ligger i et N-S-gående søkk ca. 300 m NØ for Nylykkja gård i grafittfyllitt nær grensen til grønnstensdraget over Rødås. En skjæring, 2 x 3 m, er skutt inn på tvers av en breksjert sone av pyritt- og magnetkisbåndet grafittfyllitt. Breksjerte kvartsittiske lag fører fører grovere årer og slirer av pyritt og magnetkis. Kobber- og sinkmineralisering ikke sett." Ved denne befaringen ble det bare funnet et lite skjerp (1 m3 tipp) som passer dårlig til Nilsens beskrivelse (heller ikke lokalkjente folk visste om andre skjerp i området). Det ligger 20 m sør for ei hytte, og det er en mulighet for at skjerpet beskrevet av Nilsen er gjenfylt i forbindelse med byggeaktivitet i dette hyttefeltet. I det lille skjerpet er det grafittskifer med enkelte (få) mm-mektige svovelkis-bånd og et oppimot 2 cm mektig bånd av massiv magnetkis med spor av kobberkis (prøve 01). Ett 10 cm mektig lag av kvartsitt fører magnetkis-impregnasjon. Samlet mektighet av grafittskifer som fører den fattige kis-impregnasjonen er bare noen få dm. (Bonden på Nylykkja gård påviste ei stor løsblokk (1 m3) av massiv, finkornig svovelkis han hadde funnet 100 m nord for gården under nyrydding. Den er av utseende lik malmen fra Unndal gruve, som ligger vel 1 km mot sør.)

Bibliography:

From NGU's Reference Archive:

Nilsen, Odd , 1978

Caledonian sulphide deposits and minor iron-formations from the southern Trondheim region, Norway.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.340;35-85 + k pages

Abstract:

Within the southern and central parts of the Trondheim region of the Norwegian Caledonides a great number of small, stratabound cupriferous pyrite deposits are confined to mafic metavolcanics of the Gula, Støren and Fundsjø Groups of the Lower Palaeozoic succession. The deposits occuring within, or in close contact with the metavolcanics are characterized by their association with minor manganiferous oxide/silicate iron-formations - better known as "vasskis" ore type - within the metamorphic low-grade areas. The iron-fprmations of the metamorphic higher grade terrains on the other hand, which are extensively developed within the Gula Group, are mostly of a pyrrhotitic sulphide/silicate type and sulphurization processes are thought to have played an important role during the metamorphism. The pyrite deposits occurring adjacent to the metavolcanics bear no relationship to the iron-formations. They are embedded in pelitic, often carbonaceous assemblages (Gula Group) or within tuffitic members of the volcanogene Støren Group, and they are thought to represent re-sedimented (reworked) deposits. The pyrite deposits display varying degree of metamorphic reconstitution and a tectonic control has apparently determined their disc- or ruler-shaped morphology.

Lindberg, Per Aksel , 1971

En geologisk og petrografisk undersøkelse med malmgeologiske betraktninger i området Berkåk - Soknedal, Sør-Trøndelag.

;UiO Geografisk inst.;AVHANDLING

References not to be found in NGU's Reference Archive.:

Nilsen, O. & Rohr-Torp, E. 1976: Rapport fra malmgeologiske undersøkelser i Rennebu sommeren 1976. BV 3913.

Fieldsamples

Sample No. Sample type Miscellanrous

ST0340.01 Dump

Sampler: Wilberg/...Stored: Løkken

Comment: Grafittskifer med po-py-diss-

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 5022 - 029 Nylykkja

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#

ST0340.01 Dump 681 78 39 15 135 .9 41.0

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

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

ST0340.01 4.0 11.0 -2 1.5 9 70.00 -3 -3 18.60

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

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

ST0340.01 227 52 573 37.15 8.00 17.00 -2 17.0 1.00

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

Sample No. B*

ST0340.01 -3

	From - To	Activity	Comments
	1997 - 1997	Sampling	Company/Institution :NGU-Malmreg.

	Genesis:	Sedex	Form:
	Main texture:	Banded	Min. distribution:	Disseminated (<20 % ore minerals)

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

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

Relationship	Rock	Origin
Host rock	Graphite schist	Sedimentary Original rock :Bituminous silty mudstone
		Metamorphic facies :Greenschist

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
ST0340.01	Dump	681	78	39	15	135	.9	41.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
ST0340.01	4.0	11.0	-2	1.5	9	70.00	-3	-3	18.60

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
ST0340.01	227	52	573	37.15	8.00	17.00	-2	17.0	1.00