Norsk versjon
	THE ORE DATABASE
	Occurence 5043 - 040 Småvatna
	(Object Id: 282) (Last updated: 16.05.2006)

Mineralization

	Genesis:		Form:
	Main texture:		Min. distribution:

Main grain size:

Main alteration:

	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

Flere små skjerp er beskrevet av Oftedahl (1958). De ble ikke påvist under befaring i 1996. Grong Gruber A/S har heller ikke data om skjerpeaktivitet i området. Svake svovelkis- og/eller magnetkismineraliseringer finnes i grafittfyllitt og grønnstein, men ikke spor etter skjerp av betydning.

Bibliography:

From NGU's Reference Archive:

Oftedahl, Christoffer , 1958

	Oversikt over Grongfeltets skjerp og malmforekomster.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.202;1-75 + fo pages

Abstract:

Ore occurences of the Grong area: In the period 1910-1918 a great number of ore occurences were discovered in the Grong area. The late state geologist Steinar Foslie mapped the area in the years 1922-1931. Foslie also mapped all claims and occurences and made special field investigations in a few cases. This book presents a survey of all occurences chiefly based on the field observations of Foslie. In addition the present author has done some field work in connection with the three large deposits, Joma, Skorovass, and Gjersvik. The map, Plate 1, shows the areal geology and the location of the occurrences, numbered from 1 to 131. the ore of the occurrences is chiefly pyrite. The larger occurrences also contain some chalcopyrite and sphalerite etc. and the smaller occurrences contain ither pure pyrite with some magnetite. The Joma deposit (No. 1), contains about 15.5 mill. tons of ore. The ore zone forms an arc and is situated within a thick series of greenstones (Fig. 1). The Skorovass mine (No. 2), contains about 7,5 mill. tons of ore. The deposit is situated in a greenstone complex (Fig. 7), and is immediately surrounded by asid tuffs of quartz keratophyric composition (Table 1).

Name of Locality: Skjerp 1

(Object Id: 493 40,01,00)

Location

County:

Trøndelag

Municipality:

Raarvihke (5043)

Map 1:50000:

Jomafjellet (1924-1)

Map 1:250000:

Grong

Coordinate system:

EU89-UTM Zone 33

(Coordinates NOT confirmed)

East:

440231 m.

North:

7191898 m.

Longitude:

13.7397420

Latitude:

64.8461090

Show on map

Resource

	Resource Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Resource Subtype:	Copper
			Element(s):	Cu Kis

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The fact sheet was created on 06.05.2024

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