Fact Sheet for <b>Occurence 5031

					Norsk versjon
	THE ORE DATABASE
	Occurence 5031 - 001 Nybrudalen
	(Object Id: 4326) (Last updated: 16.04.2020)

Location

County:

Trøndelag

Municipality:

Malvik (5031)

Map 1:50000:

Trondheim (1621-4)

Map 1:250000:

Trondheim

Coordinate system:

EU89-UTM Zone 32

East:

582846 m.

North:

7028314 m.

Longitude:

10.6569510

Latitude:

63.3738530

Show on map

Resource

	Resource Type:	Ferrous metals(Fe, Mn, Ti)	Resource Subtype:	Iron
			Element(s):	Fe

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Mineralization

Era: Paleozoic Period: Ordovician

Genesis: Volcex Form:

Main texture: Banded Min. distribution: Disseminated (<20 % ore minerals)

Main grain size: Fine grained (< 1 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:

Igneous complex:

Group: Formation: Tulluan formation

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Gangue mineral Amphibole Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Magnetite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Quartzite Sedimentary
Original rock :Exhalite

Metamorphic facies :Greenschist

Wall rock Conglomerate Sedimentary
Original rock :Conglomerate

Metamorphic facies :Greenschist

Wall rock Greenschist Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Structures

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

Wall rock Foliation Strike/Dip :341 / 35 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Nybrudalen består av to mindre skjerp som ligger i nordre del av et beiteområde med eldre granskog i nord, og øst for Herjuvatnet i Malvikmarka. De er angitt med samme koordinat. Skjerpet i sørvest er en liten grop hvor flere linser av blåkvartsitt som er opptil 25 cm mektige og har tynne grønnskiferlag imellom, er blottet. Den fører disseminert magnetitt og pyritt, og tynne bånd anriket på magnetitt og pyritt-kloritt. Sonen er totalt ca. 1 m mektig og ligger over en grønnskifer. Tilsvarende mineralisering i kvartsittisk bergart finnes i blokker ved skjerpet i nordøst. I østveggen er det der blottet et polymikt konglomerat med linseformete boller av felsisk bergart (trondhjemitt?) og porfyrisk grønnstein i klorittrik grunnmasse.

Photo(s) from the Deposit area:

Photo no. 1 showing Nybrudalen skjerp"

Fieldsamples

Sample No. Sample type Miscellanrous

ST0123.01 Dump

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

Comment: Magnetite-mineralisation, fine grained, semi-massive in quartzitic bands and disseminations in greywacke bands

No. of registrated element analyses = 1

ST0123.02 Dump

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

Comment: Pyrite+magnetite mineralisation, very fine grained pyrite in medium grained quartz-amphibole/chlorite-biotite schist with magnetite dissemination.

No. of registrated element analyses = 1

ST0123.03 Dump

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

Comment: Pyrite-magnetite mineralisation, disseminations in fine grained, quartzite (chert).

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 5031 - 001 Nybrudalen

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#

ST0123.01 Dump 40 100 10 11 48 -.3 6.0

ST0123.02 Dump 319 118 20 20 71 .5 40.0

ST0123.03 Dump 20 59 5 3 16 -.3 4.0

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

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

ST0123.01 8.0 2.0 -2 .4 16 -1.00 -3 -3 .21

ST0123.02 6.0 5.0 8 1.0 13 2.00 -3 3 4.05

ST0123.03 2.0 -1.0 5 .7 20 2.00 -3 -3 .56

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

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

ST0123.01 141 49 705 10.33 5.00 -8.00 -2 25.0 12.00

ST0123.02 198 41 795 11.95 6.00 -8.00 -2 57.0 17.00

ST0123.03 104 15 786 5.21 2.00 -8.00 -2 72.0 6.00

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

Sample No. B*

ST0123.01 -3

ST0123.02 -3

ST0123.03 -3

Era:	Paleozoic	Period:	Ordovician
Genesis:	Volcex	Form:
Main texture:	Banded	Min. distribution:	Disseminated (<20 % ore minerals)

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

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

Relationship	Rock	Origin
Host rock	Quartzite	Sedimentary Original rock :Exhalite
		Metamorphic facies :Greenschist
Wall rock	Conglomerate	Sedimentary Original rock :Conglomerate
		Metamorphic facies :Greenschist
Wall rock	Greenschist	Extrusive Original rock :Basalt
		Metamorphic facies :Greenschist

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :341 / 35	Post-mineralisation ;...Effect :Modifies

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
ST0123.01	Dump	40	100	10	11	48	-.3	6.0
ST0123.02	Dump	319	118	20	20	71	.5	40.0
ST0123.03	Dump	20	59	5	3	16	-.3	4.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
ST0123.01	8.0	2.0	-2	.4	16	-1.00	-3	-3	.21
ST0123.02	6.0	5.0	8	1.0	13	2.00	-3	3	4.05
ST0123.03	2.0	-1.0	5	.7	20	2.00	-3	-3	.56

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
ST0123.01	141	49	705	10.33	5.00	-8.00	-2	25.0	12.00
ST0123.02	198	41	795	11.95	6.00	-8.00	-2	57.0	17.00
ST0123.03	104	15	786	5.21	2.00	-8.00	-2	72.0	6.00