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THE ORE DATABASE
Occurence 5043 - 071 Sæterklumpen
(Object Id: 365)
(Last updated: 03.12.1998)
Location
County: Trøndelag Municipality: Raarvihke (5043)
Map 1:50000: Røyrvik (1924-4) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 435456 m. North: 7193048 m.
Longitude: 13.6385710 Latitude: 64.8555380
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis
Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Operations
From - To Activity Comments
1991 - 1991 Sampling Company/Institution :NGU

Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Volcex Form: Layer
Main texture: Structureless Min. distribution: Disseminated (<20 % ore minerals)
Main grain size: Fine grained (< 1 mm) Main alteration:
Strike/Dip: 180 / 30 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province: Caledonides
Geotec.unit: Køli Nappe Complex
Tectonic complex: Orklump Nappe
Igneous complex:
Group: Røyrvik Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Plagioclase Major mineral (>10%)
Gangue mineral Biotite Subordinate mineral (1-10%)
Gangue mineral Graphite Accessory mineral (<1%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Chalcopyrite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock Graphite bearing phyllite Sedimentary
Original rock :Argillaceous sediment
Metamorphic facies :Greenschist
Wall rock Greenstone Extrusive
Original rock :Tuff
Metamorphic facies :Greenschist

Information(s) in free text format
Free text
Forekomsten ligger som en lang (> 200 m) rustsone i en bratt skrent ca. 300 m øst for toppen av fjellet. Liten overdekning gjør at sonen er lett å finne. Mineraliseringen opptrer i en sekvens av grafitt-fyllitt og sterkt forvitret grønnstein (nesten tuffaktig). Den fete grafitt-fyllitten inneholder her ikke synlig magnetkis, men lokalt noe svovelkis. Det meste av mineraliseringen opptrer som disseminert magnetkis i grønnstein. Lokalt finnes større magnetkis-korn i feltspatganger i grønnsteiner, og det er også en observasjon av kobberkis. I forhold til størrelsen på den markerte, utholdende rustsonen er sulfidmineraliseringen svært begrenset i utstrekning.

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).

Fieldsamples
Sample No. Sample type Miscellanrous
LS91064 Bedrock
Sampler: Størseth, L.R.
Comment: Pyrite mineralization in graphite-bearing phyllite.
No. of registrated element analyses = 1
LS91065 Bedrock
Sampler: Størseth, L.R.
Comment: Graphite-bearing phyllite without sulphides?.
No. of registrated element analyses = 1
LS91066 Bedrock
Sampler: Størseth, L.R.
Comment: Pyrrhotite dissemination in greenschist.
No. of registrated element analyses = 1
LS91067 Bedrock
Sampler: Størseth, L.R.
Comment: Pyrrhotite in feldspar vein.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 5043 - 071 Sæterklumpen

Element analyses
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)
Sample No. Sample Type Cu* Zn* Pb* Co* Ni* Ag* Au#
LS91064 Bedrock 25 16 68 2 11 .4 8.0
LS91065 Bedrock 12 12 13 2 1 .3 3.0
LS91066 Bedrock 27 146 3 30 50 .3 1.0
LS91067 Bedrock 80 54 9 33 9 .5 8.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%
LS91064 2.0 2.0 72 .2 18 19.00 3 2 2.36
LS91065 4.0 3.0 9 .2 23 17.00 2 2 .87
LS91066 1.0 1.0 2 .9 4 1.00 2 2 .85
LS91067 1.0 1.0 8 .9 25 2.00 2 2 1.66
------------------
Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*
LS91064 15 8 75 3.76 1.00 5.00 1 3.0 2.00
LS91065 13 4 94 .91 1.00 5.00 1 2.0 2.00
LS91066 158 51 721 8.59 1.00 5.00 1 43.0 13.00
LS91067 32 5 455 5.99 2.00 5.00 1 131.0 7.00
------------------
Sample No. B*
LS91064 2
LS91065 2
LS91066 2
LS91067 2

The fact sheet was created on 29.04.2024
Questions or comments regarding the fact sheet can be emailed to:
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