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	THE INDUSTRIAL MINERAL DATABASE
	Deposit Area 919 - 384
	(Last updated 27.apr.2007)

Importance

Public:

Not Assessed (reg. 18.02.2015)

Economical:

Not classified/evaluated

Mineralization

	Era:		Period:
	Dating:		Method:
	Genesis:		Form:
	Main texture:		Min. distribution:

Main grain size:

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Period:

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

Group:

Formation:

Information(s) in free text format

Free text

Granittisk pegmatitt som stryker NV-SØ langs åssiden på østsiden av dalføret ved Skinnfjordene. Pegmatitten er ca. 160m lang og 30m bred og gjennomsetter grå felsiske båndgneiser (Breivik 1984). En mindre forsøksdrift er anlagt nær sørvest-grensen av kroppen. Bruddet er ovalt, med lengste akse parallelt kontakten. Det er ca. 30m langt, 20m bredt og opptil 7m dypt. Pegmatitten faller steilt mot NØ. Den består av 1-1,5m lange rosa til blek rosa K-feltspat krystaller og opptil 0,5m lange plagioklas krystaller som er sammenvokst med hovedsakelig røkkvarts og K-feltspat samt litt plagioklas, biotitt og muskovitt. Pegmatittens terrengmessige plassering og dimensjoner tilsier at den skulle ha et stort driftpotensial.

Bibliography:

From NGU's Reference Archive:

Ihlen, Peter M.; Furuhaug, Leif , 2001

	Gold resources on Ringvassøy, Troms-III: Geochemistry of heavy-mineral concentrates from stream sediments and potential gold sources

;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2000.059;104 pages

Abstract:

The geochemistry of heavy-mineral concentrates panned from stream sediments on Ringvassøy is reported. The presently known occurrences of gold inside the RGB comprise mostly quartz-vein mineralisation with a low economic potential. The stratabound Au-As-Zn mineralisation at Sørdalshøgda-South is the only one that, under favourable conditions, can be of economic interest. All of these gold occurrences were detected by the panning method together with most of the deposits carrying high concentrations of Ag, Cu, Zn, As and Sb. The geochemistry of heavy-mineral concentrates shows that the metal enrichment is mainly confined to rivers inside the RGB, whereas those in the DTC and the Caledonides carry normal background levels.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	P050.01	Hand specimen	Sampler :Peter Ihlen/...Stored :Løkken Comment :Nordveggen av brudd. Røkkvarts sammenv. med litt rosa K-feltspat No. of registrated mineral analyses = 1
	050,GK	Hand specimen	Sampler :Peter Ihlen/...Stored :Løkken Comment :Ren rosa K-feltspat No. of registrated oxide analyses = 1
	050,GP	Hand specimen	Sampler :Peter Ihlen/...Stored :Løkken Comment :Ren plagioklas No. of registrated oxide analyses = 1

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

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Analyse Results

from

Deposit Area 919 - 384 Skinnfjordene

Mineral analyses

( All values are in ppm. Negative values means below detection limit value.)

Sample No.	Sample Type	Mineral	Li	Be	B
P050.01	Hand specimen	Quartz	7.120	.083	.350

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Sample No.	Al	P	K	Ti	Fe	Ge	Rb	Sr	Pb
P050.01	42.349	41.942	.491	7.647	.424	2.696	-.010	.026	.008

Oxide analyses

( All values are in % )

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MgO	CaO	Na2O
050,GK	Hand specimen	65.50	18.34	0.00	0.04	0.01	0.10	1.68
050,GP	Hand specimen	64.70	22.42	0.00	0.06	0.03	3.38	8.45

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Sample No.	K2O	Sum
050,GK	13.95	100.00
050,GP	1.76	101.00

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The fact sheet was created on 16.05.2024

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