Norsk versjon
	THE ORE DATABASE
	Occurence 1573 - 003 Nygruva
	(Object Id: 4624) (Last updated: 15.04.2024)

Mineralization

	Era:	Paleozoic	Period:	Ordovician
	Genesis:	Replacement/Metasomatism	Form:	Irregular
	Main texture:	Structureless	Min. distribution:	Semi-massive (20-50 % ore minerals)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

Skarn formation

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Paleozoic

Period:

Ordovician

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex:

Group:

Formation:

Skjølbergformasjonen

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Garnet	Major mineral (>10%)
	Gangue mineral	Epidote	Major mineral (>10%)
	Gangue mineral	Calcite	Subordinate mineral (1-10%)
	Gangue mineral	Pyroxene	Subordinate mineral (1-10%)
	Gangue mineral	Quartz	Accessory mineral (<1%)
	Gangue mineral	Chlorite	Accessory mineral (<1%)
	Gangue mineral	Serpentine	Accessory mineral (<1%)
	Gangue mineral	Muscovite	Accessory mineral (<1%)
	Gangue mineral	Vesuvianite	Accessory mineral (<1%)
	Ore mineral	Magnetite	Major mineral (>10%)
	Ore mineral	Chalcopyrite	Major mineral (>10%)
	Ore mineral	Pyrite	Subordinate mineral (1-10%)
	Ore mineral	Pyrrhotite	Subordinate mineral (1-10%)
	Ore mineral	Goethite	Accessory mineral (<1%)
	Ore mineral	Galena	Accessory mineral (<1%)
	Ore mineral	Hematite	Accessory mineral (<1%)
	Ore mineral	Azurite	Accessory mineral (<1%)
	Ore mineral	Malachite	Accessory mineral (<1%)

Lithology:

	Relationship	Rock	Origin
	Host rock	epidot-granat skarn	Sedimentary Original rock :Limestone
			Metamorphic facies :Contact
	Wall rock	porfyriske ganger	Intrusive
	Wall rock	dioritt	Intrusive Original rock :Diorite

Information(s) in free text format

Free text

Gruva ligger 400 m nordøst for Helene gruve. Ukjent historikk, men antatt tilsvarende som Helene. Nygruva består av ei skråsjakt (4x8 m) med fall mot øst. Mindre vannfyllte hull finnes sørvest og sørøst for gruva. Den kobber-rike delen av malmsonen er prøvetatt av lensmann Nils Anders Lien, Smøla i forbindelse med at gruva ble tømt for vann på forsommeren 1993. Både kobberkis-magnetkis og magnetitt malmene opptrer i granat-epidot-pyroksen skarn. Skarnmineralene opptrer i ulik mengde og skarnsonene er opptil 2 m mektige. I gruveåpningen finnes i tillegg porfyriske ganger.

Bibliography:

From NGU's Reference Archive:

Gautneb, H. , 1988

	Structure, age and formation of dykes on the island of Smøla, Central Norway

;Norsk geologisk forening;TIDSSKRIFTARTIKKEL;Norsk geologisk tidsskrift; No.68 (4);275-288 pages

Abstract:

On the island of Smøla, five different dyke phases area represented in an Ordovician, mature ensialic arc complex. With decreasing relative age these are: granitic dykes and net-veins, composite dykes, porphyritic microdiorite dykes, dolerite dykes and granophyre dykes. The granophyres have been dated by the Rb/Sr whole-rock method and yilded a 9 point isochron of 428 ± 10Ma with an initial ratio of 0.70480 ± 0.0003 and MSWD = 2.0. From the aspect ratios of the dykes a model is proposed which suggests that the dykes were formed with a magmatic overpressure of less than 90 MPa. This indicates that the source of magma was at a maximum depht of 36 km for the basic dykes and up to 15 km for the granophyres. Theoretical results indicate that a 2 m wide dolerite dyke in the Smøla area solidified within less than about 70 days and a 10 m wide dolerite dyke in the Smøla area solidified within less than about 70 days abd a 10 m wide granophyre within around 5 years. Emplacement of the dyke swarms resulted in about 35% crustal extension.

Gautneb, Håvard; Roberts, David , 1989

	Geology and petrochemistry of the Smøla-Hitra Batholith, Central Norway.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.416;1-24 pages

Abstract:

The plutonic rocks which compose the Smøla-Hitra Batholith (SHB) cover an exposed area of c.1000 km² and intrude folded, Arenig-Llanvirn, low-grade meta-sedimentary and bimodal metavolcanic rocks and higher-grade polydeformed gneisses of probable Proterozoic age. The SHB is unconformably overlain by Old Red Sandstone sediments of possible Late Silurian to definite Middle Devonian age. Field relations demonstrate that the oldest rock-types in the batholith comprise gabbro, monzodiorite and hornblende diorite. These are succeeded by tonalite, granodiorite and granite, which occur both as plutons and as abundant dykes and veins. Later members of the SHB include composite dykes, porphyritic microdiorite, appinitic pipe-like bodies, dolerite dykes and lastly, granophyre dykes. The hypabyssal rocks post-date a phase of weak, heterogeneous deformation manifested locally within the various plutons. Pressure estimates from hornblende compositions indicate a pressure of solidification of 0.26 +-0.1 GPa, corresponding to a depth of about 9 km. Preliminary isotopic dating has indicated an age range from c. 450 to c. 428 MA; latest Mid-Ordovician to Early Silurian. The rocks of the SHB show little sign of the Scandian deformation and metamorphism which are so common elsewhere in this part of Norway.

Gautneb, Håvard , 1987

	Høy-K dioritter og assosierte bergarter på sydlige Smøla Arkipel, Møre og Romsdal.

;UiB Geologisk inst. Avd. A;AVHANDLING

Aasgaard, Gunnar , 1951

	Malmforekomster på Smøla.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 4449;3 pages

	Abstract:
	Rapporten beskriver en 3-dagers befaring av Maurdal-Nøsthaugen- og Strømmen gruver på Smøla. Mineraliseringen forekommer i hovedsak som magnetitt med noe svovel- og kobberkis. SP-målinger ved Maurdals gruver indikerer at det gjennstår malm på dypet.

Aasgaard, Gunnar , 1951

	Malmforekomster på Smøla.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1690;3 pages

	Abstract:
	Rapporten beskriver befaringer av malmforekomster på Smøla. Det blir konkludert med ønske om videre undersøkelser.

Lie, Ragnar Orten ; Tuddenham, David Berg , 2009

	Smølens kobberverk - "Den rikeste og største kobberåre i verden"

;NTNU Vitenskapsmuseet, seksjon for arkeologi og kulturhistorie;ARTIKKEL;Spor; No.24 (1);42-45 pages

Abstract:

Dagens globale finanskrise er et resultat av en amerikansk finanskrise, og den har mange likhetstrekk med en av de første kjente børsboblene - The Sout Sea Bubble. Denne engelske finansboblen sprakk på 1720-tallet og hadde også langtrekkende konsekvenser. Et eksempel er Smølens kobberverk, som både ble skapt og gikk under som resultat av børsboblen. Slik sett er restene etter Smølens kobberverk ikke bare et spennende industrielt kulturminne, men også et minnesmerke over en av de tidligste børsboblene vi kjenner.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	MR0073.01	Bedrock	Sampler: Nils Andres Lien/...Stored: Løkken Comment: Kobberkis-malm, semi-massiv, obberkis i fin-grovkornet, granat (rødbrun) - epidot skarn (kontaktsone). Innsamlet av lensmann Nils Anders Lien i bunnen av gruva No. of registrated element analyses = 1
	MR0073.02	Bedrock	Sampler: Nils Anders Lien/...Stored: Løkken Comment: Magnetitt-magnetkis-kobberkis malm, kobberkis rik, massiv, fin-middelskornet. Innsamlet av lensmann Nils Anders Lien i bunnen av gruva No. of registrated element analyses = 1
	MR0073.03	Dump	Sampler: Sandstad, J.S./...Stored: Løkken Comment: Magnetitt-malm, semi-massiv, finkornet, noe epidot-granat skarn, få kobberkis og magnetkis. No. of registrated element analyses = 1

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

Name of Locality: Skjerp 1

(Object Id: 6706 3,01,00)

Location

County:

Møre og Romsdal

Municipality:

Smøla (1573)

Map 1:50000:

Smøla (1321-1)

Map 1:250000:

Kristiansund

Coordinate system:

EU89-UTM Zone 32

East:

450618 m.

North:

7025563 m.

Longitude:

8.0130400

Latitude:

63.3553620

Show on map

Resource

	Resource Type:	Ferrous metals(Fe, Mn, Ti)	Resource Subtype:	Iron
			Element(s):	Fe Cu Kis

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	MR0073.04	Dump	Sampler: Sandstad, J.S./...Stored: Løkken Comment: Granat skarn, fin-middelskornet, litt kvarts, få kobberkis No. of registrated element analyses = 1

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

Name of Sample point: Prøvepunkt 1

(Object Id: 37327 3,01,01)

Location

County:

Møre og Romsdal

Municipality:

Smøla (1573)

Map 1:50000:

Smøla (1321-1)

Map 1:250000:

Kristiansund

Coordinate system:

EU89-UTM Zone 32

East:

450594 m.

North:

7025546 m.

Longitude:

8.0125840

Latitude:

63.3552080

Show on map

Resource

	Resource Type:	Ferrous metals(Fe, Mn, Ti)	Resource Subtype:	Iron
			Element(s):	Fe Cu Kis

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	MR0073.05	Dump	Sampler: Sandstad, J.S./...Stored: Løkken Comment: epidot skarn, fin-middelsk, litt granat og svak po + cpy min. No. of registrated element analyses = 1

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

---

Analyse Results

from

Deposit Area 1573 - 003 Nygruva

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#
MR0073.01	Bedrock	20000	664	20	58	87	20.6	2445.0
MR0073.02	Bedrock	20000	1547	26	61	49	43.2	850.0
MR0073.03	Dump	1118	97	37	18	9	.7	32.0
MR0073.04	Dump	360	78	65	4	-1	.9	11.0
MR0073.05	Dump	5788	122	5	90	21	5.8	52.0

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

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
MR0073.01	7.0	12.0	94	6.1	-2	5.00	-20	-5	-5
MR0073.02	-5.0	2.0	-5	12.3	-2	7.00	-20	-5	-5
MR0073.03	-5.0	1.0	-5	-1.0	7	4.00	-20	-5	13
MR0073.04	-5.0	-1.0	-5	-1.0	-2	5.00	-20	-5	8
MR0073.05	-5.0	2.0	-5	1.4	4	4.00	-20	-5	-5

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

Sample No.	V*	Cr*	Mn*	Fe%	W*	Sr*	La*	Na*	Mg*
MR0073.01	44	258	1518	7.57	-20	11.0	-1.00	0	0
MR0073.02	48	222	373	10.00	-20	2.0	-1.00	-0	0
MR0073.03	55	241	647	10.00	-20	5.0	-1.00	-0	0
MR0073.04	42	213	2254	6.64	-20	8.0	-1.00	-0	0
MR0073.05	33	324	639	5.33	-20	91.0	12.00	0	0

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

Sample No.	Al*	K *	Ca*	Te*
MR0073.01	2	-0	6	-10.00
MR0073.02	0	-0	1	-10.00
MR0073.03	0	-0	2	-10.00
MR0073.04	1	-0	10	-10.00
MR0073.05	2	0	4	-10.00

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The fact sheet was created on 05.05.2024

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

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