Norsk versjon
	THE ORE DATABASE
	Occurence 5021 - 009 Heimtjønnhø
	(Object Id: 4300) (Last updated: 22.03.2024)

Products

	Element/product	Crude ore grade or quality	Reg. date
	Cu	0.01 %	22.03.2024
	S	38 %	22.03.2024
	Zn	0.04 %	22.03.2024

Operations

	From - To	Activity	Comments
	1919 - 1920	Core drilling
	1919 - 1922	Test mining
	1937 - 1937	Geology	Company/Institution :S. Foslie
	1952 - 1952	Geophysics	Company/Institution :Fangel & Co A/S / Geofysisk Malmleting
	1965 - 1966	Geophysics	Company/Institution :Folldal Verk A/S
	1997 - 1997	Sampling	Company/Institution :NGU-Malmreg.

Mineralization

	Genesis:	Volcex	Form:
	Main texture:	Foliated	Min. distribution:	Massive (>50 % ore minerals)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

Sericitisation

	Strike/Dip:	30 / 70	Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Period:

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

Group:

Støren

Formation:

Elgsjø

Mineralogy

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

Lithology:

	Relationship	Rock	Origin
	Wall rock	Sericite-chlorite schist	Sedimentary Original rock :Tuffite
			Metamorphic facies :Greenschist
	Wall rock	Greenstone	Extrusive Original rock :Basalt
			Metamorphic facies :Greenschist
	Wall rock	Banded quartzite	Extrusive Original rock :Basalt
			Metamorphic facies :Greenschist

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :30 / 70	Post-mineralisation ;...Effect :None
	Wall rock	Mineral lineation	Dir./Plunge :50 / 60	Post-mineralisation ;...Effect :None
	Wall rock	Fold axis	Dir./Plunge :50 / 60	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

The mining and drilling operations revealed a composite and highly elongated massive pyritic body, encompassing 1,6 mill. tons of probable ore (Foslie 1926). The ore body is emplaced conformably within the NNE-SSW-trending tuffaceous sericite-chlorite phyllites and the banded green quartzites of the area. According to Foslie (1937) and Waltham (1968), the ore body has a Z-shaped cross section, possibly due to tight or isoclinal folding. Thin (1-15 m) horizons of chloritic greenstone are are present in the volcanic pile, close to the ore body. The composition of the massive ores at Heimtjønnhø is very simple. Pyrite constitutes almost the only sulphide species present, and occurs as a fine-grained, close-packed mosaic. Magnetite occurs occasionally, while pyrrhotite and chalcopyrite are rare. If present, they occur as small blebs (as with galena) within the pyrite.

Bibliography:

From NGU's Reference Archive:

Foslie, Steinar , 1937

	Rapport over Heimtjønhø kisgrube, Oppdal, Sør-Trøndelag.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1771;27 pages

Abstract:

Svovelkisfeltet opptrer i en mektig serie av kvartsrike glimmerskifre. Kisen er som flere andre kishorisonter i området, kobberfri. Man regner med at man har ca. 11 000 tonn råmalm pr. m. avsenkning etter fallet. Malmarealet er etter norske forhold så betydelig, og de mineraliserte strøk så lange, at malmmengden neppe vil komme til å danne noen hindring for feltets drivverdighet. Malmen er ikke så ren at den kan selges som stykk- malm. Til tross for at det er landets høyest beliggende kisgruve, er forholdene driftsmessig ganske gunstige, med bekvem adgang til stolldrifter og relativt kort transport til jernbane. Ulempen er at transporten med jernbanen blir lang, og vil kreve ca. 4 kr. pr. tonn. Forfatteren konkluderer med at forekomsten fortjener en videre oppfaring mot dypet.

Foslie, Steinar , 1926

	Norges svovelkisforekomster.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.127;122 pages

Abstract:

This paper was written in English for the XIV International Geological Congress, Madrid 1926, as a part of its monograph on the Pyrite Resources of the World. The present Norwegian edition has nearly the same content. However, the geological review is a little more extensive, the production statistics have been carried a year forward, to the end of 1925, and some more illustrations are given. The English reader is referred to monograph of the Congress, as only a short statement of the contents is given here. On page 7-13 will be found a short account of the relation of pyrite deposits to the Caledonian mountain chain in Norway. The author maintains, that the main part of its intrusives, and with them the pyrite deposits, belong to the first period of folding processes of the Norwegian mountain chain, probably of Lower Ordovician age. On page 13-18, the characteristic features of the Norwegian pyrite deposits are described, and a summary of the recent views concerning their geology is given. According to these, a small group of pyrite deposits are bio-chemical sediments between basaltic, submarine lava beds, the greatest part of them are magmatic differentiates from gabbroidal intrusives, and a last group are hydromagmatic or hydrothermal deposits.

Sakshaug, G.F. , 1966

	Geofysiske undersøkelser Heimtjønnhø Kisgrube

;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.94;9 pages

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.

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

Lile, O.B. 1969: Hjerkinnhø- Heimtjønnhø- Elgsjøtangen. BV 4342.

Carstens, C.W. 1941: Rapport over Heimtjønnhø kisforekomst. BV 948.

Waltham, A.C. 1968: Classification and genesis of some massive sulphide deposits of Norway. Inst. Min. Met. Trans. 77, B153-B161.

Name of Locality: Stollinnslag

(Object Id: 10095 9,01,00)

Location

County:

Trøndelag

Municipality:

Oppdal (5021)

Map 1:50000:

Einunna (1519-1)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

540188 m.

North:

6908020 m.

Longitude:

9.7749830

Latitude:

62.3016020

Show on map

Resource

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

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	ST0097.01	Dump	Sampler: Wilberg/...Stored: Løkken Comment: Fink. massiv py-min. No. of registrated element analyses = 1
	ST0097.02	Dump	Sampler: Wilberg/...Stored: Løkken Comment: Fink. massiv py-min. No. of registrated element analyses = 1
	ST0097.03	Dump	Sampler: Wilberg/...Stored: Løkken Comment: Fink. massiv py-min. No. of registrated element analyses = 1

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

Name of Locality:

(Object Id: 10096 9,02,00)

Location

County:

Trøndelag

Municipality:

Oppdal (5021)

Map 1:50000:

Einunna (1519-1)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

539878 m.

North:

6907990 m.

Longitude:

9.7689990

Latitude:

62.3013660

Show on map

Resource

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

Name of Locality:

(Object Id: 10097 9,03,00)

Location

County:

Trøndelag

Municipality:

Oppdal (5021)

Map 1:50000:

Einunna (1519-1)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

540278 m.

North:

6908340 m.

Longitude:

9.7767920

Latitude:

62.3044640

Show on map

Resource

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

Name of Locality:

(Object Id: 10098 9,04,00)

Location

County:

Trøndelag

Municipality:

Oppdal (5021)

Map 1:50000:

Einunna (1519-1)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

540378 m.

North:

6908740 m.

Longitude:

9.7788130

Latitude:

62.3080430

Show on map

Resource

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

Name of Locality:

(Object Id: 10099 9,05,00)

Location

County:

Trøndelag

Municipality:

Oppdal (5021)

Map 1:50000:

Einunna (1519-1)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

540029 m.

North:

6907940 m.

Longitude:

9.7718800

Latitude:

62.3009010

Show on map

Resource

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

---

Analyse Results

from

Deposit Area 5021 - 009 Heimtjønnhø

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#
ST0097.01	Dump	56	92	14	-1	30	.3	15.0
ST0097.02	Dump	18	313	33	1	17	.4	25.0
ST0097.03	Dump	67	467	62	2	31	.4	32.0

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

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
ST0097.01	1.0	1.0	88	-.2	7	-1.00	-3	9	40.70
ST0097.02	1.0	-1.0	343	.6	7	1.00	-3	13	46.50
ST0097.03	3.0	4.0	654	1.4	-1	2.00	8	12	40.60

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

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
ST0097.01	47	13	449	20.91	4.00	-8.00	2	10.0	3.00
ST0097.02	6	4	230	20.93	5.00	-8.00	2	7.0	2.00
ST0097.03	12	3	397	21.25	4.00	8.00	-2	7.0	6.00

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

Sample No.	B*
ST0097.01	5
ST0097.02	3
ST0097.03	11

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The fact sheet was created on 28.04.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

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