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THE ORE DATABASE
Occurence 5026 - 044 Grønåsen
(Object Id: 10128)
(Last updated: 26.04.2019)
Location
County: Trøndelag Municipality: Holtålen (5026)
Map 1:50000: Dalsbygda (1620-2) Map 1:250000: Røros
Coordinate system: EU89-UTM Zone 32
East: 612005 m. North: 6958308 m.
Longitude: 11.1919430 Latitude: 62.7380430
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu Kis
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

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


Products
Element/product Crude ore grade or quality Reg. date
Cu 20.04.1998
Kis 20.04.1998

Operations
From - To Activity Comments
Pitting
1997 - 1997 Sampling

Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Unknown Form: Irregular
Main texture: Structureless Min. distribution: Irregular (scattered)
Main grain size: Medium grained (1-3 mm) Main alteration: Chloritisation
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province: Caledonides
Geotec.unit: Trondheim Nappe Complex
Tectonic complex: Meråker Nappe
Igneous complex:
Group: Fundsjø Group Formation:

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

Lithology:
Relationship Rock Origin
Wall rock Amphibolite Intrusive
Original rock :Gabbro
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Wall rock Foliation Strike/Dip :308 / 78 Post-mineralisation ;...Effect :Controls

Information(s) in free text format
Free text
En vannfylt synk drevet ned i kanten av skrent, rett ved bekk. Synken er ca. 3 x 3 m i diameter og antakelig 1-1.5 m dyp. Mineralisering består av spredte, opptil cm-store aggregater av kobberkis og spredte, 1-3 mm kuber av pyritt i klorittskifer. Pyritt opptrer også spredt i finkornet, silisifisert amfibolitt. Kobberkis-aggregatene er typisk utstrukket parallell skifrigheten i klorittskiferen. Klorittskiferen innholder også elongerte linser av kvarts.

Fieldsamples
Sample No. Sample type Miscellanrous
ST0404.01 Dump
Sampler: Terje Bjerkgård/Leif Furuhaug/...Stored: Løkken/...Size(kg): 2
Comment: Irregular aggregates of chalcopyrite associated with quartz lenses in chlorite schist.
No. of registrated element analyses = 1
ST0404.02 Dump
Sampler: Terje Bjerkgård/Leif Furuhaug/...Stored: Løkken/...Size(kg): 2
Comment: Scattered mm-sized pyrite cubes in fine-grained, silicified and chlorite-altered amphibolite.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 5026 - 044 Grønåsen

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#
ST0404.01 Dump 10422 646 6 40 231 5.0 581.0
ST0404.02 Dump 2383 585 21 31 26 1.4 121.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%
ST0404.01 2.0 -1.0 -2 6.1 -1 1.00 -3 19 .94
ST0404.02 -1.0 -1.0 -2 2.8 11 1.00 -3 18 .51
------------------
Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*
ST0404.01 94 1120 2091 10.43 4.00 8.00 -2 3.0 6.00
ST0404.02 181 52 1690 8.38 6.00 -8.00 -2 32.0 21.00
------------------
Sample No. B*
ST0404.01 -3
ST0404.02 7

The fact sheet was created on 08.05.2024
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