Fact Sheet for <b>Occurence 5031

					Norsk versjon
	THE ORE DATABASE
	Occurence 5031 - 004 Nonshaugen
	(Object Id: 4473) (Last updated: 04.07.2023)

Location

County:

Trøndelag

Municipality:

Malvik (5031)

Map 1:50000:

Stjørdal (1621-1)

Map 1:250000:

Trondheim

Coordinate system:

EU89-UTM Zone 32

East:

593586 m.

North:

7023433 m.

Longitude:

10.8687630

Latitude:

63.3274180

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Resource

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

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

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

Mineralization

Era: Paleozoic Period: Ordovician

Genesis: Volcex Form: Layer

Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)

Main grain size: Medium grained (1-3 mm) Main alteration:

Strike/Dip: 265 / 80 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex: Størendekket

Igneous complex:

Group: Støren Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Epidote Subordinate mineral (1-10%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Hematite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Jasper Sedimentary
Original rock :Exhalite

Metamorphic facies :Greenschist

Wall rock Greenstone Extrusive
Original rock :Tuff

Metamorphic facies :Greenschist

Structures

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

Wall rock Foliation Strike/Dip :265 / 80 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

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Forekomsten ligger i nordøstskråningen av Nonshaugen og enkleste adkomst er å gå opp langs en sti fra Malvik Skytterlag sin skytebane på sørsida Vennatjønna. Hovedbruddet består av to vannfylte synker som ligger ca. 10 m fra hverandre. Det østligste av disse er 7 m langt og 2-3 m bredt med en opptil 3 m høy vegg i sør. Synken er minst 4 m dyp (Bakmark & Rø 2014). En ca. 1 m mektig, tilnærmet øst-vest orientert malmsone med steilt fall mot nord er synlig i vestveggen. Den består av massiv, finkornet hematitt med striper av magnetitt og med gradvis overgang til jaspis med disseminasjon av hematitt i sør. Veggen i sør (hengen) domineres av grønnstein med kraftig utviklet lineasjon, og tilsvarende grønnstein finnes også nord for malmsonen ved den vestlige synken. Tippmateriale som ligger i brattskråning nedenfor synkene er svært overgrodd av mose.

Bibliography:

From NGU's Reference Archive:

Torske, Tore , 1965

Geology of the Mostadmarka and Selbustrand area, Trøndelag.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.232;1-83 + ka pages

Abstract:

The bedrock of the area consists of metamorphic epiclastic, volcanic, and intrusive rocks of assumed Lower Ordovician age, assigned to, and lithologically matching the rocks of, the Røros, Støren and Lower Hovin Groups of the Trondheim Region. A detailed petrographic description of the rock varieties is given. The metamorphic grade of all rocks corresponds to the Greenschist Facies. - Small ore deposits occur in connection with the volcanic rocks. They comprise pyrite-pyrrhotite ores of the Leksdal Type, mixed pyrite-magnetite ores, and iron oxide ores. - Lithological variations of the sedimentary rocks is tentatively correlated with events during the early periods of the Caledonian Orogeny. - The volcanism within the area seems to have started with a phase of explosive activity, followed by extrusion (mostly submarine) of copious amounts of spilitic lavas; towards the end of the main period of volcanism a new episode of explosive activity has produced what is called the upper pyroclastic horizon, comprising rocks ranging from coarse volcanic breccia to finegrained tuffs. - The intrusive rocks consist mainly of saussurite gabbros and quartz keratophyres. The latter are thought to be intrusive rather than effusive, and evidence is offered to support this. In some places the character of pyroclastic material points to a quartz keratophyre parentage. Thus, quartz keratophyres may have occurred both as intrusive and volcanic rocks.

References not to be found in NGU's Reference Archive.:

Bakmark, N. & Rø, G 2014, Jerngruver, natur- og kulturminner i nærheten av Mostadmark jernverk - TURBOK. Mostadmark Jernverks Venner, 144 s.

Fieldsamples

Sample No. Sample type Miscellanrous

Nonshaugen-2 Dump

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

Comment: Massive magnetite-hematite, fine-/medium-grained

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

Nonshaugen-3 Dump

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

Comment: Semi-massive hematite+magnetite, jasper

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

ST0271.01 Bedrock

Sampler: Størseth, L.R./...Stored: Løkken

Comment: Sidebergart. Lys grønnstein, frisk, uten mineralisering.

ST0271.02 Bedrock

Sampler: Størseth, L.R./...Stored: Løkken

Comment: Hm-mt-bånd i hard jaspis.

ST0271.03 Bedrock

Sampler: Størseth, L.R./...Stored: Løkken

Comment: Grovkrystallin mt-min. i jaspis, noe epidot opptrer uregelmessig. Kloritt er underordnet.

ST0271.04 Bedrock

Sampler: Størseth, L.R./...Stored: Løkken

Comment: Sprø, semimassiv hm-mt-malm. Representativ for de beste delene av malmen.

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

Name of Locality: Nonshaugen øst

(Object Id: 37662 4,01,00)

Location

County: Trøndelag Municipality: Malvik (5031)

Map 1:50000: Stjørdal (1621-1) Map 1:250000: Trondheim

Coordinate system: EU89-UTM Zone 32

East: 593619 m. North: 7023441 m.

Longitude: 10.8694460 Latitude: 63.3274810

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Resource

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

Element(s): Fe

Resources and production

Activity: Pitting Reserves:

Operating method: Historical production:

Information(s) in free text format

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Lokaliteten består av en vannfylt synk med sidevegger på 4x4 m på nordsida av en brattskråning. Malmsonen kan sees i synkveggen, men er ikke tilgjengelig og tippen er også svært overgrodd av mose.

Fieldsamples

Sample No. Sample type Miscellanrous

Nonshaugen-1 Dump

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

Comment: Massive, medium-grained magnetite

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

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

Analyse Results

from

Deposit Area 5031 - 004 Nonshaugen

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#

Nonshaugen-1 Dump 13 39 0 58 143 -.1 -.5

Nonshaugen-2 Dump 5 49 0 72 215 -.1 -.5

Nonshaugen-3 Dump 2 33 0 71 163 -.1 -.5

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

Sample No. As* Cd* Ba* Mo* Sn* Sb* Bi* Se* Ga*

Nonshaugen-1 4 -.1 103 0.40 -1 -0 -0 -0.50 16.10

Nonshaugen-2 1 -.1 4 1.00 -1 -0 -0 -0.50 9.40

Nonshaugen-3 1 -.1 8 0.80 -1 -0 -0 -0.50 7.00

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

Sample No. S% V* Fe% Th* U* W* Rb* Sr* Y*

Nonshaugen-1 -.02 407 36.78 -0.20 0.30 -1 17.6 81.1 13.9

Nonshaugen-2 -.02 142 33.45 -0.20 0.20 -1 0.2 38.3 6.5

Nonshaugen-3 -.02 94 34.48 -0.20 0.30 -1 1.1 41.6 5.9

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

Sample No. Zr* Nb* Ta* Cs* La* Ce* Pr* Nd* Sm*

Nonshaugen-1 37 0.80 -0.10 1.50 1.50 4.40 0.74 4.20 1.39

Nonshaugen-2 11 0.80 -0.10 -0.10 1.10 1.80 0.29 1.60 0.52

Nonshaugen-3 7 0.40 -0.10 0.30 1.70 2.10 0.40 1.90 0.54

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

Sample No. Eu* Gd* Tb* Dy* Ho* Er* Tm* Yb* Lu*

Nonshaugen-1 0.55 2.06 0.36 2.47 0.50 1.59 0.23 1.57 0.24

Nonshaugen-2 0.22 0.83 0.15 1.01 0.23 0.79 0.11 0.80 0.14

Nonshaugen-3 0.19 0.74 0.13 0.85 0.20 0.62 0.09 0.63 0.10

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

Sample No. Be* P* Hf* Hg* Tl*

Nonshaugen-1 -1 349 0.90 -0 -0

Nonshaugen-2 -1 393 0.30 -0 -0

Nonshaugen-3 -1 436 0.20 -0 -0

Oxide analyses
( All values are in % )

Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO

Nonshaugen-1 Dump 27.62 7.69 0.53 52.58 0.26 1.08 6.96

Nonshaugen-2 Dump 41.22 3.30 0.18 47.83 0.13 1.33 2.52

Nonshaugen-3 Dump 41.98 2.78 0.10 49.30 0.13 0.49 2.94

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

Sample No. Na2O K2O P2O5 Sum

Nonshaugen-1 1.50 0.60 0.08 99.00

Nonshaugen-2 1.14 -0.01 0.09 98.00

Nonshaugen-3 1.45 0.02 0.10 99.00

Era:	Paleozoic	Period:	Ordovician
Genesis:	Volcex	Form:	Layer
Main texture:	Banded	Min. distribution:	Semi-massive (20-50 % ore minerals)

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Epidote	Subordinate mineral (1-10%)
Ore mineral	Magnetite	Major mineral (>10%)
Ore mineral	Hematite	Major mineral (>10%)

Relationship	Rock	Origin
Host rock	Jasper	Sedimentary Original rock :Exhalite
		Metamorphic facies :Greenschist
Wall rock	Greenstone	Extrusive Original rock :Tuff
		Metamorphic facies :Greenschist

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :265 / 80	Post-mineralisation ;...Effect :Modifies

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
Nonshaugen-1	Dump	13	39	0	58	143	-.1	-.5
Nonshaugen-2	Dump	5	49	0	72	215	-.1	-.5
Nonshaugen-3	Dump	2	33	0	71	163	-.1	-.5

Sample No.	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*	Se*	Ga*
Nonshaugen-1	4	-.1	103	0.40	-1	-0	-0	-0.50	16.10
Nonshaugen-2	1	-.1	4	1.00	-1	-0	-0	-0.50	9.40
Nonshaugen-3	1	-.1	8	0.80	-1	-0	-0	-0.50	7.00

Sample No.	S%	V*	Fe%	Th*	U*	W*	Rb*	Sr*	Y*
Nonshaugen-1	-.02	407	36.78	-0.20	0.30	-1	17.6	81.1	13.9
Nonshaugen-2	-.02	142	33.45	-0.20	0.20	-1	0.2	38.3	6.5
Nonshaugen-3	-.02	94	34.48	-0.20	0.30	-1	1.1	41.6	5.9

Sample No.	Eu*	Gd*	Tb*	Dy*	Ho*	Er*	Tm*	Yb*	Lu*
Nonshaugen-1	0.55	2.06	0.36	2.47	0.50	1.59	0.23	1.57	0.24
Nonshaugen-2	0.22	0.83	0.15	1.01	0.23	0.79	0.11	0.80	0.14
Nonshaugen-3	0.19	0.74	0.13	0.85	0.20	0.62	0.09	0.63	0.10

Sample No.	Be*	P*	Hf*	Hg*	Tl*
Nonshaugen-1	-1	349	0.90	-0	-0
Nonshaugen-2	-1	393	0.30	-0	-0
Nonshaugen-3	-1	436	0.20	-0	-0

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
Nonshaugen-1	Dump	27.62	7.69	0.53	52.58	0.26	1.08	6.96
Nonshaugen-2	Dump	41.22	3.30	0.18	47.83	0.13	1.33	2.52
Nonshaugen-3	Dump	41.98	2.78	0.10	49.30	0.13	0.49	2.94

Sample No.	Na2O	K2O	P2O5	Sum
Nonshaugen-1	1.50	0.60	0.08	99.00
Nonshaugen-2	1.14	-0.01	0.09	98.00
Nonshaugen-3	1.45	0.02	0.10	99.00