Norsk versjon
	THE NATURAL STONE DATABASE
	Deposit Area 2030 - 606
	(Last updated 17.sep.2013)

Importance

Public:

Little Importance (reg. 18.02.2015)

Economical:

Minor interest , (Confirmed 26.jan.2005 by Tom Heldal)

Historical:

Yes , (Confirmed 26.jan.2005 by Tom Heldal)

Products

Commercial Name

Product description

	Kleberstein	Classification :Massive blocks	Colour :Green
		Play of colours :	Uniformity :
		Lithology :Soapstone	Grain size :

Photo no. 1 showing Håndstuff"

Deposit rock

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Stratigraphic classification of host rock

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Information(s) in free text format

Description

The occurrence was visited in 1994 by L.P.Nilsson, and the following is mostly taken from the field diary: There appear to be several minor overburdened pits scattered in the terrain, though the main worked occurrence is in an isolated field, with approximate size of 150 x 40 m, of talcified komatiite situated close to the sea (Iversen 1990, fig.9 and Iversen & Nilsson 1991). Soapstone, however, is also located nearly 900 m farther east, on the main komatiite branch. The komatiite is highly magnetic with a 100-200x susceptibility contrast with the enclosing amphibolites. Generally there are fairly sharp borders between komatiite and amphibolite, though occasionally they are transitional. In such cases, there is a passage, over c. 2 - 4 m, from basic amphibolite through ultramafic amphibolite (hornblendite) to moderately altered pyroxenite into serpentinised or talcified komatiite. The main quarry is located at an elevation of 10-15 m in the steepest part of a knoll. The vertical inner wall is 5-6 m high and c. 4 m wide. Estimated quarried volume is only c. 10 m3, and on the sea shore lies a 2-3 m3 quarried block. The soapstone zone dips 60o - 70o to the south. Some 10 m south of the main quarry another working point in good quality soapstone occurs. Further, c. 35-40 m north of the quarry, and at the same altitude is a minor working with an inner wall 8-10 m wide x 2 m high. Only small blocks were worked here (possibly sinkers for fishing nets, and other items for local use) totalling not more than 2-4 m3. Some 30 m north there is another small working. The total distance in which soapstone quarrying occurred is some 70-80 m (N-S). Along this zone there are parts with only partly talcified komatiite together with amphibolite and hornblendite. The soapstone, everywhere where quarried, is, however, a massive, homogeneous, light talc-rich pot-stone with some carbonate and apparently little or no chlorite. No microscope investigations have yet been performed. Lastly it should be mentioned that the Straumdalen and Langfjorden occurrences of Sverdrup (1969, p.9,10 and map enclosure) probably represent the same zone. The Langfjorden occurrence (no. 43), plotted on Sverdrup's map, on the peninsula between the outer part of Langfjorden and Korsfjorden does not appear to exist, and the only confirmed occurrence is on Hamnebuktfjell. (From Karlsen and Nilsson 1999)

Location

The deposit is localised not far from the northern end of Langfjord.

Photo(s) from the Deposit area:

Photo no. 1 showing Sydligste brudd" Photo no. 2 showing Gamle spor i fjellveggen" Photo no. 3 showing Gamle spor i fjellveggen"

Bibliography:

From NGU's Reference Archive:

Karlsen, Tor Arne; Nilsson, Lars Petter , 2000

	Talc deposits in Norway

;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.99.135;146 pages

Abstract:

Information about talc and soapstone deposits registered in NGU's different databases and various available literature have been collected and described in the present report. Around 400 deposits/occurrences are known, but the detail of the available information varies widely. By reading old field-books as well as old manuscripts, maps, etc. dating as far back as A.D.1758, quite a lot of data has been found. The result of the work shows that most described talc in Norway is of ultramafic origin and is associated with serpentinites. The most common mineral association is talc + breunnerite. Different talc-provinces can be defined from the registered and non-registered data, the most important being Nord-Gudbrandsdalen, Altermark and Stølsheimen. While Altermark and Stølsheimen have been investgated in some detail with respect to talc as an industrial mineral, the Nord-Gudbrandsdalen talc province has been investigated both for milling talc and for soapstone use as dimension stone. Deposits that are probably extensive, but have so far not been investigated in detail, include the Lesjehorrungane deposits in the Nord-Gudbrandsdalen region and the Raudfjellet deposit in Nord-Trøndelag. The fractionated metakomatiites (pale green talc-chlorite rocks) of the southern part of the Palaeo-proterozoic Karasjok Greenstone Belt in Finnmark, Northern Norway, possibly represents, by far, the largest accumulations of talc in Norway. These rocks are recently mapped, for the first time, but other critical information is, however, very scarce.

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The fact sheet was created on 18.05.2024

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