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	THE ORE DATABASE
	Deposit Area 418 - 006
	(Last updated 27.feb.2024)

Importance

Public:

Little Importance (reg. 18.02.2015)

Economical:

Minor interest , (Confirmed 28.jan.2005 by Havard Gautneb)

Mineralization

	Era:	Proterozoic	Period:	Paleoproterozoic
	Dating:		Method:
	Genesis:	Hydrothermal vein	Form:	Plate
	Main texture:	Fracture filling	Min. distribution:	Irregular (scattered)

Main grain size:

Medium grained (1-3 mm)

Main alteration:

Sericitisation

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Proterozoic

Period:

Paleoproterozoic

	Province:	East Norwegian Basement Province
	Geotec.unit:	Solør Complex
	Tectonic complex:	Mylonite zone
	Igneous complex:

Group:

Formation:

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Shear plane	Strike/Dip :212 / 85	Syn-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

Antoinette mine is situated a few hundred metres north of Storgruven mine marked on the 1:50 000 topographic map and about 100 m east of the dirt road leading to Lake Svarttjennet. It is represented by a water-filled open pit measuring 6 m x 16 m at surface and being connected with underground workings at 8 m depth and probably below water level to unknown depth. A shallow pit have also been worked on the same vein about 60 m west of the main pit. Most of the former Dagny mine is covered by the road and only two small workings are left on both sides of the road southwest of Antoinette. Both mines were worked on Cu-sulphides occurring in thin (0,01-1 m) ductile shear zones, developed in grey coarse-grained and weakly gneissic granodiorite. The granodiorite yields an U-Pb zircon age of 1734 Ma (Mansfeld 1998). The Antoinette mine was worked on a 20 m long and well mineralised segment of a ductilely deformed quartz veins trending ENE-WSW (Ihlen 1995). The steeply dipping mylonitic quartz-vein carries often associated sheared aplite dykes along their margin. The mineralisation comprises shear-plane stringers, fracture fillings and disseminated aggregates of mainly chalcopyrite, bornite, molybdenite and scheelite. Microscopic examinations also reveal the presence of electrum (~20 mm) intergrown with the Cu-sulphides. Some fine-grained molybdenite also occurs in the aplite dykes. Analyses of grab samples yield up to 2,3 g/t Au and 175 g/t Ag. The Dagny mine was worked on several ductile shear zones in the granodiorite. The epidote-, chlorite- and calcite-bearing shear zones contain disseminated chalcopyrite, bornite, magnetite and minor molybdenite.

Bibliography:

From NGU's Reference Archive:

Horneman, C. , 1917

	Promemoria. Grtb. nr. 254. Gamle Kobbergruver og 25 nye Kobberanvisninger tilbudt E. K. tilsalgs ved herr Agent Sverre Dæhli, Kristiania.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 2215;2 pages

Abstract:

Forekomsten ligger omkring Storsjøen og i trakten mellom Storsjøen og Skarnæs jernbanestasjon. Antoinette og Storgruven har vistnok vært hovedgruvene. En analyse fra Antoinettegruven inneholder 5,16% Cu, 60g Ag pr. tonn og 1,5g Au pr. tonn. Ved de gamle gruvene skal det være lite elle intet å se i dagen og etter driftsresultatene å dømme må forekomstene være ubetydelige. Mange av de 25 nye anvisningene oppgis å se særdeles lovende ut.

Ihlen, Peter M. , 1983

	Befaringer av malmforekomster i Eidsvoll og Nord-Odal kommuner 1983

;Norsk Hydro / NGU;RAPPORT;NH-arkivet; No.NH 6B;18+bilag pages

	Abstract:
	Rapporten beskriver de forskjellige hovedtyper av malmer og mineraliseringer i Eidsvoll og Nord-Odal kommuner som ble befart. Befarte gruver: Brustad, Sander, Guldkis, Antoinette, Storgruven, Trøft-gruven og Føskersetergruven.

Name of Locality : Dagny gruve

(Object Id : 0418,006,01,00)

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Location

County :

Hedmark (04)

Municipality :

Nord-Odal (0418)

Map 1:50000:

Odalen (2015-4)

Map 1:250000:

Hamar

Marking point:

Longitude:

11.5834990

Latitude:

60.4592410

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

642075 m.

Y-coord:

6705345 m.

Commodity

	Main Type:	Precious metals (Au,Ag,PGE)	Sub Type:	Gold
			Element(s):	Au Cu Mo

Production

	Activity:	Mining	Reserves:
	Prod. method:	Open pit mining	Production:
	Prod. status:	Disused, closed	Volume of dump:

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Shear plane	Strike/Dip :77 / 90	Syn-mineralisation ;...Effect :Controls

Name of Locality : Vestlige skjerp

(Object Id : 0418,006,02,00)

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Location

County :

Hedmark (04)

Municipality :

Nord-Odal (0418)

Map 1:50000:

Odalen (2015-4)

Map 1:250000:

Hamar

Marking point:

Longitude:

11.5811890

Latitude:

60.4587910

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

641949 m.

Y-coord:

6705289 m.

Commodity

	Main Type:	Precious metals (Au,Ag,PGE)	Sub Type:	Gold
			Element(s):	Au Cu

Production

	Activity:	Test mining	Reserves:
	Prod. method:	Open pit mining	Production:
	Prod. status:	Disused, closed	Volume of dump:

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Shear plane	Strike/Dip :80 / 90	Syn-mineralisation ;...Effect :Controls

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The fact sheet was created on 08.05.2024

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