Fact Sheet for <b>Occurence 3240 - 025 Rødskjerpene</b>

					Norsk versjon
	THE ORE DATABASE
	Occurence 3240 - 025 Rødskjerpene
	(Object Id: 6513) (Last updated: 21.12.2022)

Location

County:

Akershus

Municipality:

Eidsvoll (3240)

Map 1:50000:

Eidsvoll (1915-1)

Map 1:250000:

Hamar

Coordinate system:

EU89-UTM Zone 32

East:

620275 m.

North:

6699237 m.

Longitude:

11.1837920

Latitude:

60.4115270

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Resource

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

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Mineralization

Era: Paleozoic Period: Permian

Genesis: Hydrothermal vein Form: Irregular

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

Main grain size: Very unevenly grained Main alteration:

Strike/Dip: 222 / 75 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Oslo Region

Geotec.unit: Akershus Graben

Tectonic complex:

Igneous complex: Nordmarka-Hurdal Batholith

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Carbonate Subordinate mineral (1-10%)

Ore mineral Galena Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

Ore mineral Magnetite Subordinate mineral (1-10%)

Ore mineral Mackinawite Accessory mineral (<1%)

Ore mineral Cubanite Accessory mineral (<1%)

Ore mineral Pentlandite Accessory mineral (<1%)

Ore mineral Arsenopyrite Accessory mineral (<1%)

Ore mineral Linnaeite Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Host rock Alun schist/hornfels Sedimentary
Original rock :Argillaceous sediment

Metamorphic facies :Contact

Information(s) in free text format

Free text

Hovedforekomsten består av to NØ-SV orienterte dagskjæringer som er 10-12 m lange og opptil 2 m dype og brede. I SV-veggen er blottet en 10 cm bred, grovkornet kvartsgang med aggregater og årer av sinkblende og blyglans langs kanten mot vertsbergarten som består av svart alunskifer/hornfels. I tillegg finnes noe disseminert magnetitt og svovelkis i kvartsgangen, og Co-linnaitt, arsenkis, pentlanditt, cubanitt, mackinawitt, Bi-tellurider og vismut er også påvist i skjerpene (Ihlen 1980). Hornfelsen er i kontakt med middelskornet alkalisyenitt i nordvest.

Bibliography:

From NGU's Reference Archive:

Ihlen, P.; Lutro, O. , 2010

Eidsvoll. Berggrunnskart; Eidsvoll; 19151; 1:50 000; Foreløpig utgave, plottekart

;Norges geologiske undersøkelse;KART;1 kart pages

Ihlen, Peter M. , 19080

Definering av mulig porfyr-molybden system innen kambro-silurske bergarter i Mistberget, Eidsvoll kommune

;Norsk Hydro / NGU;RAPPORT;NH-arkivet; No.NH 211;21+kart pages

Abstract:

Konklusjonen må bli at sommerens feltarbeid har ført til definering av et avgrenset hydrotermalt system som sentralt inneholder en Zn-W-Mo mineralisert sone omgitt av polymetalliske forekomster. Porfyrgangen aksialt i den sentrale omvandlingshalo kan være uttrykk i dagen for en underliggende stokkformet intrusjon som har avgitt de hydrotermale løsninger. Mineralparageneser i området både kalksilikater og sulfider antyder avtagende temperatur ut fra området Vannverket-Svingenforekomsten. De polymetalliske og sinkblende mineraliseringene antyder at erosjonsnivået skjærer omvandlingstyper ekvivalent til den propylittiske sone i et porfyr system. Intens leiromvandling i karbonat bergarter er ellers beskrevet av James (1976) fra Ely hvor den er ekvivalent med kvarts-serisitt omvandling i porfyren. Intens kaolisering som i Mistberget er beskrevet fra malmsonen i Pangua porfyr Cu forekomst (Ford, 1978)

Fieldsamples

Sample No. Sample type Miscellanrous

JS-OS2151 Dump

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

Comment: Sphalerite dissemination/aggregates within and along quartz vein

No. of registrated element analyses = 1

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

Name of Locality: Loaklitet 1

(Object Id: 38226 25,01,00)

Location

County: Akershus Municipality: Eidsvoll (3240)

Map 1:50000: Eidsvoll (1915-1) Map 1:250000: Hamar

Coordinate system: EU89-UTM Zone 32

East: 620248 m. North: 6699253 m.

Longitude: 11.1832940 Latitude: 60.4116790

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

Resources and production

Activity: Pitting Reserves:

Operating method: Historical production:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Carbonate Subordinate mineral (1-10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Galena Major mineral (>10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Host rock Alun schist/Biotite hornfels Sedimentary
Original rock :Argillaceous sediment

Metamorphic facies :Contact

Information(s) in free text format

Free text

Lokaliteten består i hovedsak av en tipp med volum 60 kbm, men det er trolig at den er drevet fra en synk eller dagskjæring som nå er gjenfylt. Samme type sink-bly mineralisering finnes her som i hovedforekomsten. Grovkornet sinkblende, blyglans og mindre mengder kobberkis opptrer som aggregater i en kvartsgang som er minst 10 cm bred. Vertsbergart for gangen er svart alunskifer/hornfels.

Fieldsamples

Sample No. Sample type Miscellanrous

JS-OS2152 Dump

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

Comment: Galena-sphalerite-chalcopyrite aggregates in quartz vein and black hornfels

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 3240 - 025 Rødskjerpene

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-OS2151 Dump 2810 32500 4280 50 19 7.4 -.5

JS-OS2152 Dump 5340 47000 63500 89 25 33.9 15.0

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

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

JS-OS2151 -2.5 1.0 1 282.0 -10 1.34 1 0 12

JS-OS2152 -2.5 4.0 8 291.0 30 2.24 1 4 28

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

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

JS-OS2151 4.00 1.56 0.07 0.86 1.75 39 6 511 1.58

JS-OS2152 24.00 8.69 0.15 0.99 4.59 120 41 2440 6.35

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

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

JS-OS2151 0.14 1 0.6 10.8 2.0 1 5.10 0.08 0.07

JS-OS2152 3.50 6 4.2 343.0 10.0 29 7.30 0.38 0.41

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

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

JS-OS2151 0.60 1.23 4 1 2100 300 4500 10 100

JS-OS2152 11.90 23.20 10 3 16500 400 26300 100 700

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

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

JS-OS2151 2000 0.30 70 0.54 -0.10 -0 0

JS-OS2152 38500 3.50 1150 6.77 0.80 -0 0

Era:	Paleozoic	Period:	Permian
Genesis:	Hydrothermal vein	Form:	Irregular
Main texture:	Structureless	Min. distribution:	Disseminated (<20 % ore minerals)

	Province:	Oslo Region
	Geotec.unit:	Akershus Graben
	Tectonic complex:
	Igneous complex:	Nordmarka-Hurdal Batholith

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Carbonate	Subordinate mineral (1-10%)
Ore mineral	Galena	Major mineral (>10%)
Ore mineral	Sphalerite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Subordinate mineral (1-10%)
Ore mineral	Pyrite	Subordinate mineral (1-10%)
Ore mineral	Magnetite	Subordinate mineral (1-10%)
Ore mineral	Mackinawite	Accessory mineral (<1%)
Ore mineral	Cubanite	Accessory mineral (<1%)
Ore mineral	Pentlandite	Accessory mineral (<1%)
Ore mineral	Arsenopyrite	Accessory mineral (<1%)
Ore mineral	Linnaeite	Accessory mineral (<1%)

Relationship	Rock	Origin
Host rock	Alun schist/hornfels	Sedimentary Original rock :Argillaceous sediment
		Metamorphic facies :Contact

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS-OS2151	Dump	2810	32500	4280	50	19	7.4	-.5
JS-OS2152	Dump	5340	47000	63500	89	25	33.9	15.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
JS-OS2151	-2.5	1.0	1	282.0	-10	1.34	1	0	12
JS-OS2152	-2.5	4.0	8	291.0	30	2.24	1	4	28

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
JS-OS2151	4.00	1.56	0.07	0.86	1.75	39	6	511	1.58
JS-OS2152	24.00	8.69	0.15	0.99	4.59	120	41	2440	6.35

Sample No.	Th*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*	Cs*
JS-OS2151	0.14	1	0.6	10.8	2.0	1	5.10	0.08	0.07
JS-OS2152	3.50	6	4.2	343.0	10.0	29	7.30	0.38	0.41

Sample No.	La*	Ce*	Li*	Be*	Na*	Mg*	Al*	P*	K *
JS-OS2151	0.60	1.23	4	1	2100	300	4500	10	100
JS-OS2152	11.90	23.20	10	3	16500	400	26300	100	700

Sample No.	Ca*	Sc*	Ti*	Te*	Hf*	Re*	Tl*
JS-OS2151	2000	0.30	70	0.54	-0.10	-0	0
JS-OS2152	38500	3.50	1150	6.77	0.80	-0	0