Faktarka for Forekomstområde 1663

					English version
	MALMDATABASEN
	Forekomstområde 1663 - 017
	(Sist oppdatert 16.apr.2020)

Navn på deposit area : Ner-Bjørnstadtjønna

(Objekt Id : 1663,017,00,00)

Lokalisering

Fylke :

Sør-Trøndelag (16)

Kommune :

Malvik (1663)

Kart 1:50000:

Trondheim (1621-4)

Kart 1:250000:

Trondheim

Markeringspunkt:

Lengdegrad:

10.6969990

Breddegrad:

63.3192060

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-koord:

585010 m.

Y-koord:

7022280 m.

Materialtype

	Hovedtype:	Basemetaller (Cu,Zn,Pb,Fe sulfider,As,Sb,Bi,Sn)	Subtype:	Sulfider
			Element(s):	Kis Fe

Production

Activity:	Røsking	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:	25 m3

Betydning

Offentlig: Little Importance (reg. 18.02.2015)

Economical: Lite viktig

Mineralization

Era: Paleozoic Period: Ordovician

Dating: Method:

Genesis: Vulkeks Form: Lag

Main texture: Båndet Min. distribution: Massiv

Main grain size: Finkornet (<1 mm) Main alteration:

Strike/Dip: 45 / 35 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex:

Igneous complex:

Group: Formation: Støren greenstone

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Mica Subordinate mineral (1-10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Magnetite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Chert Sedimentary
Original rock :Exhalite

Metamorphic facies :Greenschist

Wall rock Grønnskifer Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Structures

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

Wall rock Foliation Strike/Dip :292 / 30 Post-mineralisation ;...Effect :Modifies

Wall rock Foliation Strike/Dip :338 / 35 Post-mineralisation ;...Effect :Modifies

Wall rock Mineral lineation Dir./Plunge :105 / 30 Post-mineralisation ;...Effect :Modifies

Opplysning(er) i fritekstformat

Fri tekst

Et skjerp ligger langs en mindre rygg rett øst for en bekk i sørøstenden av Ner Bjørnstadtjønna. Ryggen domineres av sterkt deformert grønnskifer med varierende foliasjon. Mineraliseringen består av vekslende bånd/lag av massiv, finkornet pyritt (’vasskis’), chert med disseminasjon av pyritt og semi-massiv til massive magnetitt. Mektigheten på både sulfid- og magnetittrike lag er omtrent en meter.

Bilde(r) fra forekomstområdet:

Photo no. 1 showing Ner-Bjørnstadtjønna skjerp"

Fieldsamples

Sample No. Sample type Miscellanrous

JS97014 Dump

Sampler :Sandstad, J.S./...Stored :Løkken/...Size(kg) :2

Kommentar :Pyrite ore, fine grained, massive bands, chlorite laminae and chert lenses.

No. of registrated element analyses = 1

JS97015 Bedrock

Sampler :Sandstad, J.S./...Stored :Løkken/...Size(kg) :2

Kommentar :Magnetite ore, massive, fine grained, few pyrite disseminations.

No. of registrated element analyses = 1

JS97016 Dump

Sampler :Sandstad, J.S./...Stored :Løkken/...Size(kg) :2

Kommentar :Pyrite disseminations/stringers, fine grained, in fine grained quartzite with biotite pprphyroblasts.

No. of registrated element analyses = 1

JS97017 Dump

Sampler :Sandstad, J.S./...Stored :Løkken/...Size(kg) :2

Kommentar :Pyrite disseminations/aggregates, idiomorph, coarse grained in coarse grained quartz vein.

No. of registrated element analyses = 1

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

Analyse Results

from

Forekomstområde 1663 - 017 Ner-Bjørnstadtjønna

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#

JS97014 Dump 176 79 66 8 86 -.3 8.0

JS97015 Bedrock 38 111 57 2 38 .3 5.0

JS97016 Dump 53 44 6 3 16 -.3 2.0

JS97017 Dump 67 62 9 2 17 -.3 -1.0

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

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

JS97014 2.0 -1.0 273 -.2 7 25.00 -3 -3 27.59

JS97015 4.0 2.0 7 1.9 122 -1.00 -3 -3 .39

JS97016 -1.0 -1.0 101 -.2 6 6.00 -3 -3 3.59

JS97017 2.0 -1.0 30 -.2 2 4.00 -3 -3 4.78

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

Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*

JS97014 239 43 393 30.09 6.00 -8.00 2 6.0 2.00

JS97015 156 28 3344 30.73 3.00 -8.00 -2 552.0 12.00

JS97016 63 7 363 7.13 -2.00 -8.00 -2 8.0 1.00

JS97017 47 11 501 11.51 -2.00 -8.00 -2 18.0 1.00

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

Sample No. B*

JS97014 -3

JS97015 -3

JS97016 -3

JS97017 -3

Era:	Paleozoic	Period:	Ordovician
Dating:		Method:
Genesis:	Vulkeks	Form:	Lag
Main texture:	Båndet	Min. distribution:	Massiv

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Mica	Subordinate mineral (1-10%)
Gangue mineral	Chlorite	Subordinate mineral (1-10%)
Ore mineral	Pyrite	Major mineral (>10%)
Ore mineral	Magnetite	Major mineral (>10%)

Relationship	Rock	Origin
Host rock	Chert	Sedimentary Original rock :Exhalite
		Metamorphic facies :Greenschist
Wall rock	Grønnskifer	Extrusive Original rock :Basalt
		Metamorphic facies :Greenschist

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Wall rock	Foliation	Strike/Dip :292 / 30	Post-mineralisation ;...Effect :Modifies
Wall rock	Foliation	Strike/Dip :338 / 35	Post-mineralisation ;...Effect :Modifies
Wall rock	Mineral lineation	Dir./Plunge :105 / 30	Post-mineralisation ;...Effect :Modifies

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS97014	Dump	176	79	66	8	86	-.3	8.0
JS97015	Bedrock	38	111	57	2	38	.3	5.0
JS97016	Dump	53	44	6	3	16	-.3	2.0
JS97017	Dump	67	62	9	2	17	-.3	-1.0

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
JS97014	239	43	393	30.09	6.00	-8.00	2	6.0	2.00
JS97015	156	28	3344	30.73	3.00	-8.00	-2	552.0	12.00
JS97016	63	7	363	7.13	-2.00	-8.00	-2	8.0	1.00
JS97017	47	11	501	11.51	-2.00	-8.00	-2	18.0	1.00