Fact Sheet for Deposit Area 2011

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 2011 - 028
	(Last updated 15.feb.2005)

Name of Deposit Area : Scieccanjohka

(Object Id : 2011,028,00,00)

Location

County :

Finnmark (20)

Municipality :

Kautokeino (2011)

Map 1:50000:

Basevuov'di (2032-1)

Map 1:250000:

Inari

Marking point:

Longitude:

25.2271280

Latitude:

68.8266710

EU89-UTM Zone 34

X-coord:

670276 m.

Y-coord:

7640895 m.

Commodity

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

Production

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

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 15.feb.2005 by Peter Ihlen)

Mineralization

Era: Cenozoic Period: Quarternary

Dating: Method:

Genesis: Clastic sediment Form: Irregular

Main texture: Pore space filling Min. distribution: Irregular (scattered)

Main grain size: Very unevenly grained Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Feldspar Major mineral (>10%)

Gangue mineral Sericite Accessory mineral (<1%)

Ore mineral Hematite Subordinate mineral (1-10%)

Ore mineral Gold Accessory mineral (<1%)

Information(s) in free text format

Abstract

Shallow workings are found in the old river channel of Scieccanjohka river (Bjørlykke, 1966), which is situated about 5-6 m higher and 200 m west of the present river. The bedrocks in the area consist of strongly fractured and in areas schistose gneissic granites with quartz-rich veins of pegmatite along the foliation. The gneisses is frequently strongly weathered. The bedrocks form small hills and ridges with intervening areas with swamps and small auriferous gravel deposits along the old river channel which has been worked over a distance of about 500 m. The alluvial material richest in gold occur in open clefts in the bedrocks which have been worked several places.

Bibliography:

From NGU's Reference Archive:

Bjørlykke, Harald , 1966

De alluviale gullforekomster i indre Finnmark.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.236;1-66 pages

Abstract:

The first find of alluvial gold in Finnmarken was made by inspector (bergmester) Tellef Dahll in 1866 in sand from a small river named Nitusjokka near Karasjok. During the following 5 years gold deposits were found in all the rivers of the Tana river systm and the Alta and Reisa rivers. Gold has been found in small amount in all kinds of sand- and gravel deposits and also in the unwashed moraine deposits. The gold fields which have been subject to production or prospection work are situated at the upper parts of the rivers. The occurrences of alluvial gold in Finnmark may be classified in The following way: 1. Preglacial accumulations undisturbed by ice erosion during the ice age. 2: Preglacial accumulations disturbed and redeposited in moraines and fluvioglacial deposits. 3. Accumulations in postglacial river beds. The gold in these deposits seems chiefly to have been washed out from the moraines. Mineralogical analyses of the mineral composition of the gold-bearing sand and gravel have been carried out. The minerals of the gold-bearing deposits may be divided in two groups: 1. Minerals belonging to the surrounding solid rock. 2. Minerals which do not seem to belong to the solid rock in the neighbourhood of the deposits.

Era:	Cenozoic	Period:	Quarternary
Dating:		Method:
Genesis:	Clastic sediment	Form:	Irregular
Main texture:	Pore space filling	Min. distribution:	Irregular (scattered)

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Feldspar	Major mineral (>10%)
Gangue mineral	Sericite	Accessory mineral (<1%)
Ore mineral	Hematite	Subordinate mineral (1-10%)
Ore mineral	Gold	Accessory mineral (<1%)