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THE ORE DATABASE
Occurence 5042 - 001 Fossdalselva
(Object Id: 209)
(Last updated: 16.05.2006)
Location
County: Trøndelag Municipality: Lierne (5042)
Map 1:50000: Limingen (1924-2) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 442601 m. North: 7155983 m.
Longitude: 13.8039820 Latitude: 64.5243230
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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: Little Importance (reg. 18.02.2015)

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


Operations
From - To Activity Comments
1977 - 1977 Geophysics Company/Institution :Grong Gruber A/S
1991 - 1991 Sampling Company/Institution :NGU
1996 - 1996 Sampling Company/Institution :NGU

Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Volcex Form: Lens
Main texture: Structureless Min. distribution: Disseminated (<20 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration: Chloritisation
Strike/Dip: 110 / 10 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Silurian
Province: Caledonides
Geotec.unit: Køli Nappe Complex
Tectonic complex: Bjørkvatn Nappe
Igneous complex:
Group: Tjopasi Formation: Ankarede volcanite formation

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

Lithology:
Relationship Rock Origin
Host rock Quartz keratophyre Extrusive
Original rock :Rhyolite
Metamorphic facies :Amphibolite
Host rock Amphibolite Extrusive
Original rock :Basalt
Metamorphic facies :Amphibolite
Host rock Garnet amphibole fels Extrusive
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :110 / 10 Post-mineralisation ;...Effect :Modifies
Host rock Schistosity Strike/Dip :150 / 20 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Forekomsten ligger 1 km nord for Kvesjøen og 1.5 km fra riksgrensa i et område med omfattende overdekning. Gode blotninger finnes kun langs elva. Koordinatene til hovedforekomsten angir den rikeste mineraliseringen ved elva, hvor to korte hull (20-30 cm) er boret under tidligere prøvetaking. I tillegg har Grong Gruber A/S røsket i området, og påvist opptil 50 % sulfid i en røsk vest for elva. Denne er det nå ikke mulig å finne igjen. Mineraliseringen består av svak til moderat sulfiddisseminasjon i granat-amfibolfels, finkornet felsisk grunnmasse med grovkornete amfibolnek, med opptil 0.46 % Cu. Disseminert magnetkis i grovkornet amfibolitt, 0.05 % Ni og kvartskeratofyr finnes også.

Fieldsamples
Sample No. Sample type Miscellanrous
NT0222.03 Bedrock
Sampler: Sandstad, J.S./...Size(kg): 2
Comment: Moderate pyrrhotite+chalcopyrite dissemination in amphibole felsite with coarse grained amphibole in fine grained, greyish white matrix.
No. of registrated element analyses = 1
NT0222.04 Bedrock
Sampler: Sandstad, J.S./...Size(kg): 2
Comment: Moderate pyrrhotite dissemination in amphibole-chlorite rock with very coarse grained amphibole.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Sample point: Prøvepunkt 1
(Object Id: 2114 1,00,01)
Location
County: Trøndelag Municipality: Lierne (5042)
Map 1:50000: Limingen (1924-2) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 442601 m. North: 7155963 m.
Longitude: 13.8039890 Latitude: 64.5241430
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis


Fieldsamples
Sample No. Sample type Miscellanrous
NT0222.01 Bedrock
Sampler: Sandstad, J.S./...Size(kg): 2
Comment: Pyrrhotite dissemination in fine grained, dark green amphibolite.
No. of registrated element analyses = 1
NT0222.02 Bedrock
Sampler: Sandstad, J.S./...Size(kg): 2
Comment: Weak pyrrhotite dissemination and pyrite-amphibole-chlorite veinlets in fine grained, bluish grey, quartz keratophyre.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Sample point: Prøvepunkt 2
(Object Id: 10301 1,00,02)
Location
County: Trøndelag Municipality: Lierne (5042)
Map 1:50000: Limingen (1924-2) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 442681 m. North: 7155173 m.
Longitude: 13.8059660 Latitude: 64.5170690
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis


Fieldsamples
Sample No. Sample type Miscellanrous
LS91141 Bedrock
Sampler: Størset, L.R.
Comment: Pyrrhotite-(chalcopyrite?) dissemination in coarse grained amphibolite.
No. of registrated element analyses = 1
LS91142 Bedrock
Sampler: Størset, L.R.
Comment: Pyrrhotite as thin veinlets in fine grained amphibolite.
No. of registrated element analyses = 1
LS91143 Bedrock
Sampler: Størset, L.R.
Comment: Pyrrhotite dissemination in pale amphibolite.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 5042 - 001 Fossdalselva

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#
LS91141 Bedrock 32 66 2 49 478 .2 1.0
LS91142 Bedrock 135 24 2 30 22 .2 1.0
LS91143 Bedrock 118 28 2 38 61 .4 1.0
NT0222.01 Bedrock 352 24 -3 33 24 -.3 6.0
NT0222.02 Bedrock 218 20 -3 23 9 -.3 5.0
NT0222.03 Bedrock 454 10 3 55 26 .3 3.0
NT0222.04 Bedrock 238 38 -3 33 16 -.3 1.0
------------------
Sample No. Pt# Pd# Rh# As* Cd* Ba* Mo* Sb* Bi*
LS91141 1.0 1.0 2 1.5 124 1.00 2 2
LS91142 1.0 1.0 2 .7 3 1.00 2 2
LS91143 1.0 2.0 2 .2 5 1.00 2 2
NT0222.01 -1.0 -1.0 -1.0 -2 .3 26 1.00 -2 -2
NT0222.02 -1.0 -1.0 -1.0 -2 -.2 5 2.00 -2 -2
NT0222.03 -1.0 -1.0 -1.0 -2 -.2 12 -1.00 -2 -2
NT0222.04 -1.0 -1.0 -1.0 -2 -.2 47 -1.00 3 -2
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* W* Sr*
LS91141 .61 33 492 860 4.69 3.00 5.00 1 25.0
LS91142 1.46 74 6 676 4.15 1.00 5.00 1 51.0
LS91143 2.65 58 55 734 5.63 1.00 5.00 1 23.0
NT0222.01 1.75 137 15 349 6.21 -2.00 -5.00 -2 4.0
NT0222.02 .62 89 7 366 4.32 -2.00 -5.00 -2 4.0
NT0222.03 3.57 60 4 137 6.49 -2.00 -5.00 -2 4.0
NT0222.04 2.43 150 64 760 9.92 -2.00 -5.00 -2 3.0
------------------
Sample No. La* B*
LS91141 9.00 2
LS91142 2.00 2
LS91143 2.00 2
NT0222.01 1.00 -3
NT0222.02 3.00 -3
NT0222.03 2.00 -3
NT0222.04 2.00 3

The fact sheet was created on 06.05.2024
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