Norsk versjon
	THE ORE DATABASE
	Deposit Area 437 - 049
	(Last updated 23.apr.2015)

Importance

Public:

Little Importance (reg. 18.02.2015)

Economical:

Minor interest , (Confirmed 16.feb.2005 by Havard Gautneb)

Operations

	From - To	Activity	Comments
	1795 - 1796	Test mining	Company/Institution :Kvikne Kobberværk
	1974 - 1977	Geology
	1974 - 1977	Sampling	Company/Institution :Sufidmalm
	1975 - 1977	Geophysics	Company/Institution :Sulfidmalm AS
			Ground mag. and VLF survey. Surface and downhole charge potential surveys.
	1976 - 1977	Core drilling	Company/Institution :Sulfidmalm AS
			17 drillholes totaling 934.05 m. Best results 1.60 % Ni, 0.30 % Cu over 5.5 m in DDH 12 and 1.55 % Ni, 0.48 % Cu over 0.5 m in DDH 17.
	1998 - 1998	Sampling
	2004 - 2004	Geophysics	Company/Institution :AS Sulfidmalm/Blackstone Ventures Inc.
			Aerial survey covering Olkar, Kaltberget and Vakkerlien (done by NGU)

Mineralization

	Era:	Paleozoic	Period:	Cambrian
	Dating:		Method:
	Genesis:	Orthomagmatic formation	Form:	Lens
	Main texture:	Structureless	Min. distribution:	Disseminated (<20 % ore minerals)

Main grain size:

Medium grained (1-3 mm)

Main alteration:

Chloritisation

	Strike/Dip:	84 / 15	Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Paleozoic

Period:

Cambrian

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

Group:

Gula

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Plagioclase	Major mineral (>10%)
	Gangue mineral	Amphibole	Major mineral (>10%)
	Gangue mineral	Chlorite	Accessory mineral (<1%)
	Gangue mineral	Biotite	Accessory mineral (<1%)
	Ore mineral	Pyrrhotite	Major mineral (>10%)
	Ore mineral	Chalcopyrite	Major mineral (>10%)
	Ore mineral	Pentlandite	Accessory mineral (<1%)

Lithology:

	Relationship	Rock	Origin
	Host rock	Gabbro	Intrusive Original rock :Olivine gabbro
			Metamorphic facies :Amphibolite
	Wall rock	Amphipolite
			Metamorphic facies :Amphibolite
	Wall rock	Carbonate Quartz biotite chist	Sedimentary Original rock :Greywacke
			Metamorphic facies :Amphibolite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Schistosity	Strike/Dip :84 / 15	Post-mineralisation ;...Effect :Controls
	Wall rock	Foliation	Strike/Dip :42 / 25	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

The deposit is located about 300m SSW of the summit of Kaltberget mountain, at approximately 820m above sea level. From road to the Kvikne Quarries, an old cart track (Muskegg?) can be followed all the way up to the pit. When the first pitting activities occurred in the area is currently unknown. Sulfidmalm A/S sampled the locality in 1974, with promising results. After that, geological and geophysical maps were made, revealing a new locality about 50m N of the original pit. From 1975-1977, 17 cores were drilled (Sivertsen & Nixon 1976, Sivertsen 1977). The results show that the mineralization occurs in a 400H100m ultramafic body. The richest parts of cores contain 1-1.5wt% Ni and 0.1-0.3wt% Cu over a length of 3-5.5mm. The conclusion was that the mineralization was too small to be of economic interest. The pit comprises a 5m wide and 2m deep cut at the bottom of a 10-15m high ledge. At the top of the ledge, a quartz biotite schist containing carbonate dips 25E in direction 42E. The ledge itself consists of medium grained ultramafic gabbro; schist is again found 5-10 down. The ultramafite in the ledge is strongly deformed, with poorly developed schistosity and containing minor talc. It contains lumped aggregates and beads as well as disseminated pyrrhotite and minor amounts of chalcopyrite. The mineralized zone has a true thickness of about 1.5m. Similar mineralizations were sampled from the tailings at the steep down slope below the ledge (samples HE0153.01-.03). The ultramafic body is one of many related to the mafic metavolcanics of the Gula group (Nilsen & Mukherjee 1972, Nilsen 1987). A 10m long and 2m high bulge occurs at the E side of a peat bog, 50-60m N of the main pit. Pyrrhotite and minor chalcopyrite occur disseminated and as lumped aggregates in somewhat schistose ultramafite (sample HE0153.04).

Photo(s) from the Deposit area:

Photo no. 1 showing Kaltberget, innslaget" Photo no. 2 showing Malmsona i Kaltberget"

Bibliography:

From NGU's Reference Archive:

Nilsen, Odd; Mukherjee, Ananda Deb , 1972

	Geology of the Kvikne mines with special reference to the sulphide ore mineralization.

;Norsk geologisk forening;TIDSSKRIFTARTIKKEL;Norsk geologisk tidsskrift; No.52 (2);151-192 pages

Abstract:

The Kvikne group of mines and prospects lies within strongly folded metasediments and metavolcanics in the central Norwegian Caledonides. In general, the sulphide ore bodies are stratabound in nature, and have a ruler shape with parallel alignment and F2 linear structure. They occur adjacent to and at the border between a thin horizon of amphibolite (Gula greenstone) and calcsilicate bearing biotite schists (Gula schists). A short range metasomatism has affected the ore-bearing border zone bringing about a deprivation of lime and thereby a relative enrichment of Al, Mg and Si, giving rise to cummingtonite/anthophyllite-, garnet-, and quartz-bearing wall rocks. The ores have been broadly classified into pyrrhotitic ores and pyritic/chalcopyritic ores. A probable epigenic origin is suggested, depending on the trace element distribution and micromineralogy.

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.:

Sulfidmalm A/S 1982: Undersøkelsesrapport knyttet til mutinger over Kaltberget og Olkar forekomster. Bergvesenet rapport, BV 377.

Sivertsen, R. & Nixon, F. 1976: Investigations in the Kvikne region, 1976. Geophysical investigations and diamond drilling. Kaltberget area. Bergvesenet rapport BV 517.

Sivertsen, R. 1977: Geophysical investigations and diamond drilling at Kaltberget 1977. Bergvesenet rapport BV 545.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	HE0153.01	Bedrock	Sampler :J.S. Sandstad/...Stored :Løkken Comment :Disseminasjon/aggregater av magnetkis+pentlanditt+kobberkis i middelskornet ultramafitt med plagioklas (rik min.) No. of registrated element analyses = 1
	HE0153.02	Bedrock	Comment :Svak-moderat disseminasjon/aggregater av magnetkis+kobberkis+pentlanditt i grovkornet, grønnsvart ultramafitt No. of registrated element analyses = 1
	HE0153.03	Bedrock	Comment :Magnetkis+pentlanditt+kobberkis åre og strenger/disseminasjon rundt åra i fin-middelskornet gabbro No. of registrated element analyses = 1

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

Name of Sample point : Grøtberget

(Object Id : 0437,049,00,01)

---

Location

County :

Hedmark (04)

Municipality :

Tynset (0437)

Map 1:50000:

Kvikne (1620-3)

Map 1:250000:

Røros

Marking point:

Longitude:

10.3804570

Latitude:

62.5386240

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

571020 m.

Y-coord:

6934944 m.

Commodity

	Main Type:	Ferroalloys (Cr,Ni,Co,V,Mo,W)	Sub Type:	Nickel
			Element(s):	Ni Cu

Information(s) in free text format

Free text

En 10 m lang og opptil 2 m høy nabbe ligger i østkanten av ei myr 50-60 m nord for hovedskjerpet i bunnen av brattskrenten. Magnetkis og mindre mengder kobberkis opptrer disseminert og i aggregater i svakt forskifra ultramafitt (prøve HE0153.04).

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	HE0153.HE0153.04	Bedrock	Sampler :Mohammed & J.S Sandstad/...Stored :Løkken/...Size(kg) :3 Comment :Magnetkis+pentlanditt+kobberkis, svak disseminasjon/aggregater i grovkornet ultramafitt No. of registrated element analyses = 1

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

---

Analyse Results

from

Deposit Area 437 - 049 Kaltberget

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#
HE0153.HE0153.04	Bedrock	4575	1	2	812	15531	2.5	21.0
HE0153.01	Bedrock	6050	1	10	429	11895	2.2	12.0
HE0153.02	Bedrock	1495	17	3	209	6109	.5	11.0
HE0153.03	Bedrock	1251	2	3	166	4772	.9	3.0

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

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
HE0153.HE0153.04	98.0	123.0	1	.1	2	1.00	26	2	9.63
HE0153.01	1419.0	226.0	7	.2	41	2.00	24	18	5.66
HE0153.02	460.0	63.0	1	.3	93	1.00	14	2	2.74
HE0153.03	142.0	56.0	1	.1	8	0.50	8	2	2.79

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

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
HE0153.HE0153.04	34	1079	439	16.23	1.00	4.00	6	43.0	0.50
HE0153.01	19	90	133	8.55	2.00	4.00	3	8.0	6.00
HE0153.02	48	189	203	5.16	1.00	4.00	1	3.0	2.00
HE0153.03	26	323	116	3.73	2.00	4.00	1	5.0	1.00

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

Sample No.	B*
HE0153.HE0153.04	2
HE0153.01	2
HE0153.02	2
HE0153.03	2

---

The fact sheet was created on 01.05.2024

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

Copyright © 2024 Geological Survey of Norway