Norsk versjon
	THE ORE DATABASE
	Occurence 5026 - 028 Guldals grube
	(Object Id: 4421) (Last updated: 07.11.2023)

Operations

	From - To	Activity	Comments
	1774 - 1779	Regular production	Company/Institution :Røros Kobberverk
	1823 - 1823	Test mining	Company/Institution :Røros Kobberverk
	1847 - 1848	Test mining	Company/Institution :Røros Kobberverk og Klinkenbergs interes
			Det var noe strid om rettighetene i denne perioden.
	1905 - 1915	Test mining	Company/Institution :Flere selskaper
			Periodevis drift
	1997 - 1997	Sampling	Company/Institution :NGU

Mineralization

	Era:	Paleozoic	Period:
	Genesis:	Volcex	Form:
	Main texture:	Breccia cement	Min. distribution:	Massive (>50 % ore minerals)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

Chloritisation

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Paleozoic

Period:

	Province:	Caledonides
	Geotec.unit:	Røros Nappe Complex
	Tectonic complex:
	Igneous complex:

Group:

Aursund

Formation:

Røsjø

Mineralogy

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

Lithology:

	Relationship	Rock	Origin
	Wall rock	Sandstone	Sedimentary Original rock :Sandstone
			Metamorphic facies :Amphibolite
	Wall rock	Quartz-biotite schist	Sedimentary Original rock :Greywacke
			Metamorphic facies :Amphibolite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :0 / 35	Post-mineralisation ;...Effect :Modifies
	Wall rock	Schistosity	Strike/Dip :335 / 45	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Forekomsten ligger ca. 940 moh og omtrent 1 km NØ for Rørosmenna i et småkupert område ved et lite tjern på vestsida av Gauldalsgruvhøgda. Gruveområdet består av en rekke gruveåpninger, skjerp, tipper og rester etter gamle brakker. Forekomsten ble mutet av Røros Kobberverk i 1774 og var i drift fram til 1779. Mindre drift var det i 1823 og senere i 1848. Da sto både Kobberverket og Klinkenbergs Interessentskap bak driften og det var konflikter om rettighetene. Driften ble gjenopptatt i 1906-15 og totalt skal det være tatt ut omkring 1.000 tonn kobbermalm. Hovedgruva ligger på nordsida av en bekk og er drevet som en skråsynk med orientering øst-vest ned til omtrent 27 m under dagen. I følge Aasgaard (1927) skal dette være en kobbermalmgruve med kobberkis og magnetkis i en kvartsgang. På tippene dominerer imidlertid massiv breksjemalm som består av magnetkis og kobberkis og varierende mengder sinkblende, med fragmenter av grønne silikater og runde kvartsøyne. I tillegg finnes også båndet magnetitt, magnetkis og kobberkis malm i denne forekomsten. Kvartsittisk sandstein og kvarts-biotittskifer utgjør sidebergartene, og de er gjerne klorittisert inn mot sulfidsonene.

Photo(s) from the Deposit area:

Photo no. 1 showing Guldals gruvbe, hovedgruva" Photo no. 2 showing Guldal-feltet"

Bibliography:

From NGU's Reference Archive:

Aasgaard, Gunnar , 1927

	Gruber og skjerp i kisdraget Øvre Guldal-Tydal.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.129;1-196 pages

Abstract:

The occurences described in this paper form a connection between th mining districts around Røros to the south and those around Meråker to the north. The occurences lie in mountain regions partly above the forest line. The list on page 12 contains the names of all known occurrences of whatever size within the district considered. Pl. I is a geological outline map of the district, compiled from maps in the Norwegian Geological Survey. In a geological summary on pages 18-27 it is shown that no pyrite occurrences of economic importance so far have been found in an eastern zone along the Swedish boundary where the rocks consist of hard schist with sparagmites, and igneous rocks. Neither have such occurrences been found in a zone of "Stuedalsskifer" and an other zone of "Gulaskifer" towards west, both indicated on the map. The occurrences of pyrite are chiefly found in connection with fine grained, light green or gravish, partly feldspar bearing schist and in connection with green schists, mostly fine grained hornblende schists. All these zones of schist gnereally strike north and dip west. The pyrite bearing schist lie on both sildes of a large zone of igneous rocks extending from Kjølifjell in the south over Hyllingen and Melshogna to Fangen in the Meråker district in the north.

Rui, Ingolf J.; Bakke, Inge , 1975

	Stratabound sulphide mineralization in the Kjøli area, Røros district, Norwegian Caledonides.

;Norsk geologisk forening;TIDSSKRIFTARTIKKEL;Norsk geologisk tidsskrift; No.55 (1);51-75 pages

Abstract:

Two important sulphide ore-bearing formations have been recognized in the Cambro-Silurian succession of the Røros district. One is composed of submarine greenstones and quartz keratophyres (the Hersjø Formation). The other one, which is studied here, consists of a heterogeneous series of banded meta-argillites and meta-greywackes with subordinate thin green interlayers of probable volcanogenic origin (the Røsjø Formation). These two formations are embedded in a thick succession of various clastic sedimentary rocks which have undergone metamorphism and folding during the Silurian orogeny. The numerous sulphide deposits which occur in the Kjøli area are largely confined to the Røsjø Formation. The sulphide bodies are chiefly composed of massive pyrite and/or pyrrhotite showing variable chalcopyrite and sphalerite grades. The massive sulphides often occur as thin, extensive sheets, locally as irregular, small lenses which rarely exceed one metre in thickness. It is probable that the sulphides have been precipitated primarily on the sea-floor, but there is no clear evidence of a volcanogenic origin. Local discordant relationships between the massive sulphides and the wall rocks are ascribed to metamorphic mobilization of the sulphides. The thicker sulphide lenses may themselves represent mobilized portions of thinner sulphide-rich units.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	Guldal-1	Dump	Sampler: T. Bjerkgård No. of registrated element analyses = 1
	ST0219.06	Dump	Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2 Comment: po-cpy+sl breksjemalm, rik cpy min., biotitt/amfibol fragmenter. No. of registrated element analyses = 1
	TB-Røros 19-40	Dump	Sampler: T. Bjerkgård No. of registrated element analyses = 1
	TB-Røros 19-41	Dump	Sampler: T. Bjerkgård No. of registrated element analyses = 1
	TB-Røros 19-42	Dump	Sampler: T. Bjerkgård No. of registrated element analyses = 1
	399782	Dump	Sampler: MINDEX ASA No. of registrated element analyses = 1
	399783	Dump	Sampler: MINDEX ASA No. of registrated element analyses = 1

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

Name of Sample point: Guldals grube

(Object Id: 10018 28,00,01)

Location

County:

Trøndelag

Municipality:

Holtålen (5026)

Map 1:50000:

Ålen (1720-4)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

629906 m.

North:

6970283 m.

Longitude:

11.5511540

Latitude:

62.8395270

Show on map

Resource

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

Information(s) in free text format

Free text

På nordsida ev en mindre, vannfyllt synk finnes en ca. 2 m bred malmsone som består av båndet, massiv magnetitt, magnetkis og kobberkis malm. Magnetitt og magnetkis veksler i noen mm-tynne bånd som er gjennomsatt av årer og strenger med kobberkis.

Photo(s) from the Deposit area:

Photo no. 1 showing Guldals grube, grop 1"

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	ST0219.03	Bedrock	Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2 Comment: mt-po-cpy malm, massiv, finkronet, båndet, cpy strenger har 'trengt' inn i mt-bånd. No. of registrated element analyses = 1

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

Name of Sample point: Guldals grube

(Object Id: 10019 28,00,02)

Location

County:

Trøndelag

Municipality:

Holtålen (5026)

Map 1:50000:

Ålen (1720-4)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

629972 m.

North:

6970161 m.

Longitude:

11.5523580

Latitude:

62.8384110

Show on map

Resource

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

Information(s) in free text format

Free text

I en dagskjæring utenfor stollinngangen til Gammelgruven gjenstår 30-40 cm mektig magnetkis-kobberkis malm som overlagres av biotitt-kloritt rik skifer. I tillegg finnes båndet magnetitt, magnetkis og kobberkis malm på tippen. Malmen i Gammelgruven skal ha vært fattigere på kobberkis enn i Hovedgruven.

Photo(s) from the Deposit area:

Photo no. 1 showing Gammelgruva i Guldal" Photo no. 2 showing Malmsone i Gammelgruva"

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	ST0219.04	Dump	Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2 Comment: mt-po-cpy malm, massiv, finkornet, fint båndet, cpy strenger (lik .03). No. of registrated element analyses = 1

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

Name of Sample point: Guldals grube

(Object Id: 10020 28,00,03)

Location

County:

Trøndelag

Municipality:

Holtålen (5026)

Map 1:50000:

Ålen (1720-4)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

629956 m.

North:

6970222 m.

Longitude:

11.5520990

Latitude:

62.8389570

Show on map

Resource

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

Information(s) in free text format

Free text

På tipper omkring Tydølernes skjerp dominerer magnetkis-kobberkis breksjemalm.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	ST0219.05	Dump	Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2 Comment: po-cpy breksjemalm, middels cpy min., mange mafiske fragmenter. No. of registrated element analyses = 1

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

Name of Locality: Guldal skjerp I

(Object Id: 10021 28,01,00)

Location

County:

Trøndelag

Municipality:

Holtålen (5026)

Map 1:50000:

Ålen (1720-4)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

629237 m.

North:

6970191 m.

Longitude:

11.5379610

Latitude:

62.8389360

Show on map

Resource

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

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Mineralogy

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

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Schistosity	Strike/Dip :82 / 55	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Skjerpet består av en gjenrast og gjenvoskt grop med mindre tipp omkring. Kun svak sulfidmineralisering kan observeres i kloritt-amfibol rik skifer i skjerpet. Rik, magnetkis-kobberkis-sinkblende breksjemalm er prøvetatt fra tipp i området. Denne kan imidlertid også komme fra taubanetransporten fra Kjøli gruve som passerte nær dette området.

Photo(s) from the Deposit area:

Photo no. 1 showing Guldal skjerp I"

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	ST0219.01	Dump	Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2 Comment: po-cpy-sl, finkornet, massiv breksjemalm, amfibolfragmenter og kvartsøyne. No. of registrated element analyses = 1

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

Name of Locality: Guldal skjerp II

(Object Id: 10022 28,02,00)

Location

County:

Trøndelag

Municipality:

Holtålen (5026)

Map 1:50000:

Ålen (1720-4)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

629560 m.

North:

6970253 m.

Longitude:

11.5443440

Latitude:

62.8393810

Show on map

Resource

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

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Mineralogy

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

Information(s) in free text format

Free text

Skjerpet er en røskegrop med vegger 3 x 2 m. Linseformet, opptil 20-30 cm mektig, massiv breksjemalm står igjen i NØ-veggen. Vertsbergarten er en finkornet, grågrønn sandstein og svak klorittisering sees inn mot sulfidsona.

Photo(s) from the Deposit area:

Photo no. 1 showing Guldal skjerp II"

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	Guldal skjerp-1	Dump	Sampler: T. Bjerkgård No. of registrated element analyses = 1
	ST0219.02	Dump	Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2 Comment: po-sl-cpy, breksjemalm, grønne fragmenter, cpy årer i sidebergart. No. of registrated element analyses = 1

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

---

Analyse Results

from

Deposit Area 5026 - 028 Guldals grube

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#
Guldal skjerp-1	Dump	4680	23500	32	136	94	2.1	80.0
Guldal-1	Dump	26000	2550	7	154	62	6.8	32.0
ST0219.01	Dump	32576	29373	12	271	81	11.1	49.0
ST0219.02	Dump	9109	27392	827	170	106	8.1	59.0
ST0219.03	Bedrock	34107	764	10	199	13	4.8	63.0
ST0219.04	Dump	5610	2168	3	61	15	1.9	17.0
ST0219.05	Dump	25452	8146	13	158	42	7.0	52.0
ST0219.06	Dump	33482	12839	9	231	52	7.8	163.0
TB-Røros 19-40	Dump	1270	32100	8	414	75	.6	13.0
TB-Røros 19-41	Dump	37700	948	12	63	7	5.9	18.0
TB-Røros 19-42	Dump	1730	142	2	9	1	1.1	.5
399782	Dump	14000	1946	72	327	87	2.9	64.0
399783	Dump	13000	8871	80	95	26	4.7	31.0

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

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
Guldal skjerp-1	2.5	.5	1	65.6	80	5.77	9	0	14
Guldal-1	2.5	1.0	2	6.9	120	6.52	9	0	19
ST0219.01	-1.0	-1.0	4	87.9	20	4.00		7	26
ST0219.02	3.0	2.0	-2	85.9	14	4.00		-3	59
ST0219.03	2.0	2.0	-2	1.2	2	1.00		4	15
ST0219.04	1.0	-1.0	-2	4.4	8	-1.00		-3	-3
ST0219.05	2.0	2.0	-2	23.3	34	3.00		4	12
ST0219.06	2.0	1.0	-2	37.7	28	3.00		14	28
TB-Røros 19-40	2.5	.5	1	76.6	10	9.83	2	0	19
TB-Røros 19-41	2.5	.5	1	2.9	20	5.14	14	0	7
TB-Røros 19-42	2.5	.5	1	.1	10	0.69	4	0	4
399782			87	6.6	13	16.00		3	28
399783			176	23.9	9	8.00		3	3

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

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
Guldal skjerp-1	49.00	14.70	0.45	2.00	10.00	82	54	1050	31.40
Guldal-1	45.00	25.80	0.74	2.19	7.37	82	60	1030	32.30
ST0219.01					29.10	23	45	360	38.46
ST0219.02					22.76	22	44	342	34.62
ST0219.03					15.51	3	1	91	43.14
ST0219.04					5.04	38	11	363	40.39
ST0219.05					17.08	57	59	586	28.89
ST0219.06					18.35	41	45	405	34.51
TB-Røros 19-40	96.00	10.95	0.63	8.03	10.00	2	2	185	50.00
TB-Røros 19-41	36.00	19.95	1.95	2.44	4.47	19	19	687	41.30
TB-Røros 19-42	4.00	41.90	1.50	0.73	.27	11	9	134	50.00
399782						50	77	433	10.00
399783						23	23	202	10.00

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

Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
Guldal skjerp-1	4.15	1.50	0	4.9	64.4	12.2	29	5.20	0.39
Guldal-1	4.63	1.70	0	186.0	13.8	17.0	39	7.00	0.48
ST0219.01	5.00	-8.00	6		2.0
ST0219.02	7.00	-8.00	5		3.0
ST0219.03	5.00	-8.00	-2		1.0
ST0219.04	5.00	-8.00	-2		1.0
ST0219.05	6.00	-8.00	3		3.0
ST0219.06	6.00	-8.00	-2		2.0
TB-Røros 19-40	0.09	0.50	0	0.2	1.4	1.1	2	0.20	0.03
TB-Røros 19-41	4.06	1.20	0	9.2	28.4	59.3	69	5.70	0.37
TB-Røros 19-42	0.46	0.10	0	2.2	0.6	0.6	2	1.00	0.09
399782					7.0
399783					2.0

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

Sample No.	Cs*	La*	Ce*	B*	Li*	Be*	Sc*	Ti*	Te*
Guldal skjerp-1	1.06	12.10	30.20		13	1	10.60	1631	5.88
Guldal-1	39.60	9.40	24.90		6	1	11.50	1733	9.95
ST0219.01		5.00		-3
ST0219.02		7.00		-3
ST0219.03		-1.00		-3
ST0219.04		4.00		-3
ST0219.05		11.00		-3
ST0219.06		10.00		-3
TB-Røros 19-40	0.05	0.25	0.77		0	0	0.20	60	6.24
TB-Røros 19-41	9.49	14.90	36.30		6	5	6.50	1830	3.03
TB-Røros 19-42	0.42	0.25	0.82		0	0	0.90	470	0.86
399782		11.00						360
399783		0.50						180

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

Sample No.	Hf*	Re*	Tl*
Guldal skjerp-1	0.80	0	0
Guldal-1	1.00	0	2
ST0219.01
ST0219.02
ST0219.03
ST0219.04
ST0219.05
ST0219.06
TB-Røros 19-40	0.10	0	0
TB-Røros 19-41	1.40	0	0
TB-Røros 19-42	0.10	0	0
399782
399783

---

The fact sheet was created on 18.04.2024

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

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