Norsk versjon
	THE ORE DATABASE
	Deposit Area 437 - 040
	(Last updated 12.sep.2023)

Importance

Public:

Little Importance (reg. 18.02.2015)

Economical:

Minor interest , (Confirmed 03.apr.2002 by Jan Sverre Sandstad)

Operations

	From - To	Activity	Comments
	1912 - 1914	Test mining	Company/Institution :Bergasessor Spinzig
	1974 - 1974	Sampling	Company/Institution :A/S Sulfidmalm
	1998 - 1998	Sampling	Company/Institution :NGU

Mineralization

	Era:	Proterozoic	Period:	Neoproterozoic
	Dating:		Method:
	Genesis:	Volcex	Form:	Lens
	Main texture:	Banded	Min. distribution:	Massive (>50 % ore minerals)

Main grain size:

Medium grained (1-3 mm)

Main alteration:

Chloritisation

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Proterozoic

Period:

Neoproterozoic

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

Group:

Gula

Formation:

Mineralogy

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

Lithology:

	Relationship	Rock	Origin
	Wall rock	Quartzite	Sedimentary Original rock :Exhalite
			Metamorphic facies :Amphibolite
	Wall rock	Quartz mica schist	Sedimentary Original rock :Greywacke
			Metamorphic facies :Amphibolite
	Wall rock	Amphibolite	Extrusive Original rock :Basalt
			Metamorphic facies :Amphibolite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :22 / 15	Post-mineralisation ;...Effect :None
	Wall rock	Schistosity	Strike/Dip :330 / 25	Post-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Forekomsten ligger i bunnen av elvedalen på vestsida av Russu og 400 m nord for brua over elva. En 14 m lang dagstoll går inn fra elvebredden mot vest. Den er 5 m høy lengst i vest, og åpningen til en stoll som i følge Berg (1917) skal være 50-60 m lang er trolig gjenrast. Stollen ble påbegynt av bergassessor Spinzig, men arbeidene ble avsluttet ved starten av 1. verdenskrig. Malmsonen er derfor ikke tilgjengelig i dag. I dagstollen kan tektonostratigrafien til de tilnærmet flattliggende sideebergartene studeres. Nederst finnes kvarts-glimmerskifer som pålagres av 1-2 m mektig, finkornet amfibolitt. Den er dels klorittisert og fører svak magnetkis disseminasjon. På toppen i veggen i dagstollen ligger kvartsitt med smale (opptil 10 cm) linser av massiv magnetkis i den nedre delen. Det er sannsynlig at dette nivået representerer malmnivået. Massiv, middelskornet magnetkis med varierende innhold av kobberkis er dominerende malmtype på tippen (prøve .03). Kobberkis opptrer i linser og smale bånd i magnetkisen dels sammen med sinkblende (prøve .01). De ulike malmineralene finnes i ulike bånd med glimmerrike bånd (2-4 mm) i mellom (prøve .02).

Photo(s) from the Deposit area:

Photo no. 1 showing Russu dagskjæring"

Bibliography:

From NGU's Reference Archive:

Berg, P. J. , 1917

	Sæterfjeldets kisfelt.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1772;1 pages

	Abstract:
	Rapporten beskriver følgende forekomster: - Sæterfjellets kisfelt som opptrer som en rekke ganger med stor regelmessighet og med mektigheter fra en til ti meter. Malmmineraliseringen er kobberholdig svovelkis. - Sandfjellets kisfelt, forekomstene er lite undersøkt. - Løken, Estermoen og Orkelbogen er et ca 10 km langt felt med betydelige mektigheter.

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.:

Sivertsen, R. 1975: Geological, geophysical and diamond drilling investigations in the Kvikne area 1974. Project 905.20. Bergvesenet rapport nr. BV 1014, 21s.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	HE0144.01	Dump	Sampler :J.S. Sandstad/...Stored :Løkken Comment :Massiv, middelskornet magnetkis+kobberkis, kobberkis danner linser/bånd No. of registrated element analyses = 2
	HE0144.02	Dump	Sampler :J.S. Sandstad/...Stored :Løkken Comment :Semi-massiv, båndet kobberkis-sinkblende-magnetkis malm med glimmer-laminer No. of registrated element analyses = 2
	HE0144.03	Dump	Sampler :J.S. Sandstad/...Stored :Løkken Comment :Massiv magnetkis-kobberkis malm, kobberkis i aggregater/linser/bånd No. of registrated element analyses = 2

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

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Analyse Results

from

Deposit Area 437 - 040 Russu

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#
HE0144.01	Dump	17933	16042	2	942	478	4.4	16.0
HE0144.01	Dump	17800	17900	7	876	435	4.5	5.0
HE0144.02	Dump	34500	19300	478	618	308	9.7	8.0
HE0144.02	Dump	41771	18607	483	681	344	10.4	51.0
HE0144.03	Dump	19400	2930	13	884	455	4.7	6.0
HE0144.03	Dump	17450	2692	17	905	471	6.1	6.0

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Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
HE0144.01	1.0	12.0	9	84.4	5	48.00		2	2
HE0144.01	2.5	10.0	11	79.6	5	63.40	0	0	2
HE0144.02	8.0	6.0	8	88.5	50	42.80	4	0	13
HE0144.02	9.0	4.0	17	99.3	61	31.00		9	22
HE0144.03	2.5	10.0	10	13.9	5	51.80	1	0	2
HE0144.03	8.0	7.0	10	13.5	5	38.00		43	2

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Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
HE0144.01					33.80	12	22	210	56.33
HE0144.01	82.00	0.87	0.57	2.54	10.00	19	3		50.00
HE0144.02	59.00	11.10	0.46	2.79	10.00	146	146		39.20
HE0144.02					25.20	72	136	460	42.15
HE0144.03	88.00	0.91	0.59	0.71	10.00	16	8		50.00
HE0144.03					33.70	9	12	145	50.39

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Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
HE0144.01	3.00	4.00	1		0.5
HE0144.01	0.04	0.30	0	0.7	3.0	1.7	1	0.10	0.03
HE0144.02	0.50	0.80	0	37.9	63.1	6.8	14	1.10	0.12
HE0144.02	1.00	4.00	1		5.0
HE0144.03	0.08	0.40	0	1.2	6.7	0.6	1	0.10	0.03
HE0144.03	1.00	4.00	1		1.0

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Sample No.	Cs*	La*	Ce*	B*	Li*	Be*	Al*	P*	Sc*
HE0144.01		0.50		2
HE0144.01	0.05	0.90	1.69		0	0	0	20	0.20
HE0144.02	2.72	3.50	8.24		14	0	2	240	7.10
HE0144.02		1.00		2
HE0144.03	0.08	1.30	2.92		0	0	0	40	0.40
HE0144.03		0.50		8

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

Sample No.	Ti*	Te*	Hf*	Re*	Tl*
HE0144.01
HE0144.01	25	2.35	0.05	0	0
HE0144.02	1030	4.40	0.40	0	1
HE0144.02
HE0144.03	25	3.02	0.05	0	0
HE0144.03

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The fact sheet was created on 18.05.2024

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

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