Faktarka for Forekomstområde 1636

					English version
	MALMDATABASEN
	Forekomstområde 1636 - 029
	(Sist oppdatert 13.apr.2020)

Navn på deposit area : Blomsbakken

(Objekt Id : 1636,029,00,00)

Lokalisering

Fylke :

Sør-Trøndelag (16)

Kommune :

Meldal (1636)

Kart 1:50000:

Hølonda (1521-2)

Kart 1:250000:

Trondheim

Markeringspunkt:

Lengdegrad:

9.7202300

Breddegrad:

63.0690370

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-koord:

536394 m.

Y-koord:

6993485 m.

Materialtype

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

Production

Activity:	Prospektering	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:	5 m3

Betydning

Offentlig: Not Assessed (reg. 18.02.2015)

Economical: Lite viktig , (Confirmed 17.des.2019 by Jan Sverre Sandstad)

Operations

From - To Activity Comments

1984 - 1984 Geology Company/Institution :NTH

Siv Kjeldsen; Diplomoppgave

Mineralization

Era: Paleozoic Period: Ordovician

Dating: Method:

Genesis: Vulkeks Form: Linse

Main texture: Strukturløs Min. distribution: Disseminert

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

Strike/Dip: 290 / 60 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex: Støren Nappe

Igneous complex:

Group: Støren Group Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Chlorite Major mineral (>10%)

Gangue mineral Mica Subordinate mineral (1-10%)

Gangue mineral Feldspar Subordinate mineral (1-10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Ore mineral Pyrite Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Host rock Grønnstein Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Structures

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

Host rock Schistosity Strike/Dip :280 / 55 Post-mineralisation ;...Effect :Modifies

Opplysning(er) i fritekstformat

Fri tekst

Dette er et lite skjerp i bunnen av en brattskrent hvor større blokker har rast ut. En to m bred sulfidmineralisert sone finnes langs kontakten mellom to grønnsteiner; mulig lavastømmer. Mineraliseringen består av svak disseminasjon av magnetkis, pyritt og kobberkis i klorittrik grønnstein og i tynne kvartslinser og -årer i denne.

Bibliography:

From NGU's Reference Archive:

Kjeldsen, Siv , 1984

En undersøkelse av sulfidmineraliseringer i Grefstadfjell og Resfjellområdene, Løkkenfeltet.

;NTH Bergavd.;AVHANDLING

Fieldsamples

Sample No. Sample type Miscellanrous

JS-M1923 Bedrock

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

Kommentar :Svak pyritt-kobberkis disseminasjon i klorittisert grønnstein

No. of registrated element analyses = 1

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

Analyse Results

from

Forekomstområde 1636 - 029 Blomsbakken

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#

JS-M1923 Bedrock 1800 153 -1 74 20 .3 -1.0

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

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

JS-M1923 -5.0 -1.0 16 .2 10 7.80 0 0 0

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

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

JS-M1923 3.00 22.40 0.26 0.18 .86 125 47 1820 16.50

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

Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*

JS-M1923 0.28 0.10 -0 1.6 6.9 63.1 20 3.40 0.31

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

Sample No. Cs* La* Ce* Li* Be* Na* Mg* Al* P*

JS-M1923 1.03 5.00 18.00 4 0 0 2 5 1570

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

Sample No. K * Ca* Sc* Ti* Te* Hf* Re* Tl*

JS-M1923 0 1 27.40 1 0.05 0.80 5 0

From - To	Activity	Comments
1984 - 1984	Geology	Company/Institution :NTH
		Siv Kjeldsen; Diplomoppgave

Era:	Paleozoic	Period:	Ordovician
Dating:		Method:
Genesis:	Vulkeks	Form:	Linse
Main texture:	Strukturløs	Min. distribution:	Disseminert

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Chlorite	Major mineral (>10%)
Gangue mineral	Mica	Subordinate mineral (1-10%)
Gangue mineral	Feldspar	Subordinate mineral (1-10%)
Ore mineral	Pyrrhotite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Subordinate mineral (1-10%)
Ore mineral	Pyrite	Accessory mineral (<1%)

Relationship	Rock	Origin
Host rock	Grønnstein	Extrusive Original rock :Basalt
		Metamorphic facies :Greenschist

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Schistosity	Strike/Dip :280 / 55	Post-mineralisation ;...Effect :Modifies

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS-M1923	Bedrock	1800	153	-1	74	20	.3	-1.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
JS-M1923	-5.0	-1.0	16	.2	10	7.80	0	0	0

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
JS-M1923	3.00	22.40	0.26	0.18	.86	125	47	1820	16.50

Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
JS-M1923	0.28	0.10	-0	1.6	6.9	63.1	20	3.40	0.31

Sample No.	Cs*	La*	Ce*	Li*	Be*	Na*	Mg*	Al*	P*
JS-M1923	1.03	5.00	18.00	4	0	0	2	5	1570

Sample No.	K *	Ca*	Sc*	Ti*	Te*	Hf*	Re*	Tl*
JS-M1923	0	1	27.40	1	0.05	0.80	5	0