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	THE ORE DATABASE
	Occurence 4211 - 011 Fone
	(Object Id: 5273) (Last updated: 24.06.2015)

Mineralization

	Era:	Paleozoic	Period:	Devonian
	Genesis:		Form:
	Main texture:		Min. distribution:

Main grain size:

Main alteration:

	Strike/Dip:		Direction:
			Plunge:

Ti-deposit type(s)

	Main type:	Metasomatic	Ilm/Mt-ratio:
	Sub type:	Rutile in amphibolite	%TiO(Ore):
	Titanium province:	Arendal - Bamble	%P2O5(Ore):
	Host rock:	Amphibolite	%MgO(Ilm):	<1
	Main Ti mineral:	Rutile	%V2O3(Mt):	< 0.4
			ppm U (Rutile):

Stratigraphic classification of host rock

Era:

Paleozoic

Period:

Devonian

	Province:	South Norwegian Basement Province
	Geotec.unit:	Bamble Complex
	Tectonic complex:
	Igneous complex:

Group:

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Albite	Major mineral (>10%)
	Gangue mineral	Pyroxene	Subordinate mineral (1-10%)
	Gangue mineral	Amphibole	Subordinate mineral (1-10%)
	Gangue mineral	Quartz	Subordinate mineral (1-10%)
	Ore mineral	Rutile	Subordinate mineral (1-10%)
	Ore mineral	Apatite	Subordinate mineral (1-10%)

Information(s) in free text format

Free text

Relativt grovkornet rutil opptrer i albittrike årer og i breksjeaktige partier i amfibolitt, i kryssende albittpegmatittiske ganger og i noen tilfeller i kvartsårer. Det er flere røsker og små synker innenfor en avstand på i størrelsesorden 100m, blant annet tre små stoller ved en åpen plass ved en skogsbilvei. Det er mye synlig rutil og apatitt i prøver på tipphaugene, men alt i alt er det lite materiale som er tatt ut. Rutil fra dette området har relativt høyt innhold av uran (42 ppm U, Korneliussen m. fl. 2000), noe som er en ulempe sett fra et industrielt synspunkt. Det foreligger ingen pålitelige data som viser gjennomsnittsgehalter og korresponderende forekomststørrelse. Alt i alt vurderes forekomsten å være uten økonomisk interesse.

Bibliography:

From NGU's Reference Archive:

Korneliussen, Are; McEnroe, Suzanne A.; Nilsson, Lars-Petter; Schiellerup, Henrik; Gautneb, Håvard; Meyer, Gurli B.; Størseth, Leif Roger , 2000

	An overview of titanium deposits in Norway

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.436;27-38 pages

Abstract:

Titanium deposits in Norway are of three major types: igneous, metasomatic and metamorphic. The igneous deposits are compared of ilmenite, magnetite and apatite in various proportions and occur in geological provinces of different ages. and some have a metamorphic overprint. The other majord Ti ore-types is the rutile-bearing eclogites in western Norway that formed during the Caledonian high-pressure metamorphism of predominantly Proterozoic basic igneous rocks. The third Ti ore-Type is the Proterozoic rutile-bearing, scapolitised and albitised rocks in the Bamble region of South Norway.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	KB5A.91	Bedrock	Sampler: Are Korneliussen/...Stored: Løkken Comment: Albitite dioside rock No. of registrated oxide analyses = 1
	KB5C.91	Bedrock	Sampler: Are Korneliussen/...Stored: Løkken Comment: Albitite dioside rock No. of registrated oxide analyses = 1
	KB5D.91	Bedrock	Sampler: Are Korneliussen/...Stored: Løkken Comment: Albitite dioside rock No. of registrated oxide analyses = 1
	KB5G.91	Bedrock	Sampler: Are Korneliussen/...Stored: Løkken Comment: Albitite dioside rock No. of registrated oxide analyses = 1
	KB5H.91	Bedrock	Sampler: Are Korneliussen/...Stored: Løkken Comment: Albitite dioside rock No. of registrated oxide analyses = 1
	KB5I.91	Bedrock	Sampler: Are Korneliussen/...Stored: Løkken Comment: Albitite dioside rock No. of registrated oxide analyses = 1
	262.21	Bedrock	Sampler: Are Korneliussen/...Stored: Løkken Comment: Albitite dioside rock 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 4211 - 011 Fone

Oxide analyses

( All values are in % )

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
KB5A.91	Bedrock	45.43	15.61	1.78	12.27	0.03	8.07	7.52
KB5C.91	Bedrock	62.96	19.92	2.32	0.45	0.01	0.32	3.06
KB5D.91	Bedrock	71.93	13.96	0.39	2.67	0.05	0.53	1.32
KB5G.91	Bedrock	53.48	5.50	4.82	4.85	0.03	10.55	14.68
KB5H.91	Bedrock	64.17	18.68	3.04	0.31	0.01	0.27	1.41
KB5I.91	Bedrock	73.68	13.62	0.24	1.94	0.04	0.43	1.42
262.21	Bedrock	58.21	11.20	2.41	10.13	0.10	2.70	5.91

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Sample No.	Na2O	K2O	P2O5	Sum
KB5A.91	6.01	0.69	0.24	98.00
KB5C.91	9.33	1.05	0.04	99.00
KB5D.91	6.21	2.68	0.09	100.00
KB5G.91	3.71	0.11	0.09	98.00
KB5H.91	10.65	0.25	0.14	99.00
KB5I.91	3.64	4.66	0.06	100.00
262.21	1.21	2.12	0.07	94.00

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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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