Fact Sheet for <b>Occurence 5025

					Norsk versjon
	THE ORE DATABASE
	Occurence 5025 - 021 Skåkåsen
	(Object Id: 4353) (Last updated: 09.12.2021)

Location

County:

Trøndelag

Municipality:

Rosse (5025)

Map 1:50000:

Røros (1720-3)

Map 1:250000:

Røros

Coordinate system:

EU89-UTM Zone 32

East:

627119 m.

North:

6939615 m.

Longitude:

11.4734050

Latitude:

62.5654930

Show on map

Resource

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

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

	Activity:	Test mining	Reserves:
	Operating method:	Open pit and underground mining	Historical production:

Mineralization

Era: Paleozoic Period: Ordovician

Genesis: Volcex Form:

Main texture: Min. distribution:

Main grain size: Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Røros Nappe Complex

Tectonic complex:

Igneous complex:

Group: Aursund Formation: Røros

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Gangue mineral Carbonate Accessory mineral (<1%)

Gangue mineral Muscovite Accessory mineral (<1%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Ore mineral Sphalerite Subordinate mineral (1-10%)

Ore mineral Pentlandite Subordinate mineral (1-10%)

Ore mineral Pyrite Accessory mineral (<1%)

Ore mineral Galena Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Host rock Metasandstone to siltstone Sedimentary
Original rock :Sandstone

Metamorphic facies :Greenschist

Structures

Location: Type: Orientation(360 gr.): Relation to min.:

Wall rock Foliation Strike/Dip :192 / 39 Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

Skåkåsgruva befinner seg drøyt 200 m sør for veien inn til Skåkåsvollen, like sør for langstrakt myrområde. Gruva eller skjerpet består av en ca. 20 m lang grøft i SV retning (230 grader) som generelt er veldig overgrodd. I øst er grøfta ca. 1 m dyp, mens de vestligste 7-8 m er vannfylte og ender i en skråsynk. Tippvolumet anslås til ca. 200 kbm. Mineraliseringen er ikk synlig eller tilgjengelig i fastfjell. På tippen sees stripet og sliret mineralisering bestående i hovedsak av semimassiv magnetkis (pyrrhotitt) med aksessorisk til underordnet kobberkis og sinkblende, samt aksessorisk pyritt og blyglans. Sulfidstripene opptrer i en kvartsrik bergart med underordnet kloritt. Blokker på tipphaugen viser at malmsonen hvertfall stedvis har hatt en mektighet på opptil 0.5 m.

Photo(s) from the Deposit area:

Photo no. 1 showing Skåkåsen gruve (mot SV)"

Photo no. 2 showing Skåkåsen gruve (mot NØ)"

Fieldsamples

Sample No. Sample type Miscellanrous

SKÅKÅSGRUVA-1 Dump

Sampler: T. Bjerkgård

Comment: Lenses and bands of semimassive pyrrhotite with a stripe of chalcopyrite, accessory sphalerite, pyrite and galena

No. of registrated element analyses = 1

SKÅKÅSGRUVA-2 Dump

Sampler: T. Bjerkgård

Comment: Semimassive pyrrhotite with accessory chalcopyrite and sphalerite, also few aggregates of galena and scattered grains of pyrite

No. of registrated element analyses = 1

NB! All analyse values are shown at the end of the printout.:

Analyse Results

from

Deposit Area 5025 - 021 Skåkåsen

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#

SKÅKÅSGRUVA-1 Dump 3070 28600 14200 502 8870 100.0 442.0

SKÅKÅSGRUVA-2 Dump 884 17700 23600 611 16550 79.0 218.0

------------------

Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*

SKÅKÅSGRUVA-1 8.0 3.0 269 51.0 30 -1.00 -1 149 -1

SKÅKÅSGRUVA-2 7.0 16.0 1780 30.6 30 -1.00 -1 279 -1

------------------

Sample No. Se* Ga* Ge* In* V* Cr* Mn* Fe% Th*

SKÅKÅSGRUVA-1 1.00 3.00 -1.00 -1.00 42 3620 252 23.20 -1.00

SKÅKÅSGRUVA-2 -1.00 2.00 -1.00 -1.00 20 1800 138 37.40 -1.00

------------------

Sample No. U* W* Nb* Ta* Li* P* Sc* Ti* Te*

SKÅKÅSGRUVA-1 -1.00 -1 -1.00 -1.00 5 -10 9.00 90 -1.00

SKÅKÅSGRUVA-2 -1.00 -1 -1.00 -1.00 -1 -10 4.00 -50 -1.00

Era:	Paleozoic	Period:	Ordovician
Genesis:	Volcex	Form:
Main texture:		Min. distribution:

	Province:	Caledonides
	Geotec.unit:	Røros Nappe Complex
	Tectonic complex:
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Chlorite	Subordinate mineral (1-10%)
Gangue mineral	Carbonate	Accessory mineral (<1%)
Gangue mineral	Muscovite	Accessory mineral (<1%)
Ore mineral	Pyrrhotite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Subordinate mineral (1-10%)
Ore mineral	Sphalerite	Subordinate mineral (1-10%)
Ore mineral	Pentlandite	Subordinate mineral (1-10%)
Ore mineral	Pyrite	Accessory mineral (<1%)
Ore mineral	Galena	Accessory mineral (<1%)

Relationship	Rock	Origin
Host rock	Metasandstone to siltstone	Sedimentary Original rock :Sandstone
		Metamorphic facies :Greenschist

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :192 / 39	Post-mineralisation ;...Effect :Controls

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
SKÅKÅSGRUVA-1	Dump	3070	28600	14200	502	8870	100.0	442.0
SKÅKÅSGRUVA-2	Dump	884	17700	23600	611	16550	79.0	218.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
SKÅKÅSGRUVA-1	8.0	3.0	269	51.0	30	-1.00	-1	149	-1
SKÅKÅSGRUVA-2	7.0	16.0	1780	30.6	30	-1.00	-1	279	-1

Sample No.	Se*	Ga*	Ge*	In*	V*	Cr*	Mn*	Fe%	Th*
SKÅKÅSGRUVA-1	1.00	3.00	-1.00	-1.00	42	3620	252	23.20	-1.00
SKÅKÅSGRUVA-2	-1.00	2.00	-1.00	-1.00	20	1800	138	37.40	-1.00