Faktarka for Forekomstområde 1824

					English version
	MALMDATABASEN
	Forekomstområde 1824 - 016
	(Sist oppdatert 28.apr.2020)

Navn på deposit area : Almåsen

(Objekt Id : 1824,016,00,00)

Lokalisering

Fylke :

Nordland (18)

Kommune :

Vefsn (1824)

Kart 1:50000:

Fustvatnet (1926-4)

Kart 1:250000:

Mosjøen

Markeringspunkt:

Lengdegrad:

13.2353820

Breddegrad:

65.9839910

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-koord:

419868 m.

Y-koord:

7319252 m.

Materialtype

	Hovedtype:	Jernmetaller (Fe, Mn, Ti)	Subtype:	Jern
			Element(s):	Fe

Production

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

Betydning

Offentlig: Little Importance (reg. 18.02.2015)

Economical: Lite viktig , (Confirmed 26.jun.2001 by Jan Sverre Sandstad)

Products

Element/product Crude ore grade or quality

FE 20 %

Operations

From - To Activity Comments

1972 - 1972 Geophysics

1978 - 1978 Geology Company/Institution :Rana Gruber

Mineralization

Era: Proterozoic Period: Neoproterozoic

Dating: Method:

Genesis: Sedeks Form: Lag

Main texture: Båndet Min. distribution: Semi-massiv

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

Strike/Dip: 210 / 85 Direction: 210

Plunge: 20

Stratigraphic classification of host rock

Era: Period:

Province: Caledonides

Geotec.unit: Helgeland Nappe Complex

Tectonic complex: Elsfjord unit

Igneous complex:

Group: Elsfjordgruppen Formation: Jernmalmformasjonen

Mineralogy

Relationship Mineral Amount

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Biotite Subordinate mineral (1-10%)

Gangue mineral Carbonate Subordinate mineral (1-10%)

Gangue mineral Apatite Accessory mineral (<1%)

Ore mineral Magnetite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Unknown Karb.-aktinolittba. Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Unknown Primary layering Strike/Dip :210 / 85 Syn-mineralisation ;...Effect :None

Opplysning(er) i fritekstformat

Fri tekst

Tonnasjen er: Tykkelse Lengde Dyp Tonn (sp.v.3,0) ------------------------------------------- Almåsåsen 10m 450m 30m 405000 (Mt.mineralis.) 2,5 km NØ Almåsåsen 20m 100m 30m 180000 (Hem.-mt.-imp.) Det er analysert 4 utplukkede rike håndstykker (Norsk Jernverks lab. 1978): Almåsåsen (vektprosent) ---------------------------------------------------------------------------- Fe-total Fe-magn. MnO TiO2 P S ---------------------------------------------------------------------- 33,3 31,2 0,47 0,45 0,180 0,012 34,2 30,4 0,37 0,55 0,256 0,010 19,8 13,0 0,64 0,67 0,252 0,010 18,2 16,2 0,53 0,48 0,132 0,010 ---------------------------------------------------------------------- Aritm. m. 26,3 22,7 0,50 0,54 0,21 0,011 Den regionale flymåling i 1972 har gitt en tydelig magnetisk anomali over området, innbefattet nr. 4846) Straum-Drevjaelv som ligger 2 km SV for Almås-åsen.

Fieldsamples

Sample No. Sample type Miscellanrous

JS_FE1709 Bedrock

Sampler :J.S. Sandstad

Kommentar :Massive magnetite-hematite, finely banded

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

JS_FE1710 Bedrock

Sampler :J.S. Sandstad

Kommentar :Magnetite-hematite? dissemination in amphibole-calc schist

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

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

Navn på locality : Almåsen, S-ende

(Objekt Id : 1824,016,02,00)

Lokalisering

Fylke : Nordland (18) Kommune : Vefsn (1824)

Kart 1:50000: Fustvatnet (1926-4) Kart 1:250000: Mosjøen

Markeringspunkt: Lengdegrad: 13.2324970 Breddegrad: 65.9825680

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-koord: 419732 m. Y-koord: 7319098 m.

Materialtype

Hovedtype: Jernmetaller (Fe, Mn, Ti) Subtype: Jern

Element(s): Fe

Production

Activity: Røsking Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Navn på locality : Almåsen, N-ende

(Objekt Id : 1824,016,03,00)

Lokalisering

Fylke : Nordland (18) Kommune : Vefsn (1824)

Kart 1:50000: Fustvatnet (1926-4) Kart 1:250000: Mosjøen

Markeringspunkt: Lengdegrad: 13.2378130 Breddegrad: 65.9853210

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-koord: 419982 m. Y-koord: 7319397 m.

Materialtype

Hovedtype: Jernmetaller (Fe, Mn, Ti) Subtype: Jern

Element(s): Fe

Production

Activity: Røsking Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Navn på locality : 2,5 km NØ Almåsen

(Objekt Id : 1824,016,04,00)

Lokalisering

Fylke : Nordland (18) Kommune : Vefsn (1824)

Kart 1:50000: Fustvatnet (1926-4) Kart 1:250000: Mosjøen

Markeringspunkt: Lengdegrad: 13.2612930 Breddegrad: 66.0044340

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-koord: 421107 m. Y-koord: 7321497 m.

Materialtype

Hovedtype: Jernmetaller (Fe, Mn, Ti) Subtype: Jern

Element(s): Fe

Production

Activity: Røsking Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Analyse Results

from

Forekomstområde 1824 - 016 Almåsen

Element analyses
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)

Sample No. Sample Type Cu* Zn* Pb* Co* Ni* Au# As*

JS_FE1709 Bedrock 4 33 1 11 13 1.1 1

JS_FE1710 Bedrock 31 23 2 23 29 2.1 -1

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

Sample No. Ba* Mo* Sn* Se* Ga* V* Th* U* W*

JS_FE1709 190 0.70 -1 -0.50 7.00 110 2.40 0.70 1

JS_FE1710 176 0.30 1 -0.50 8.30 98 4.30 0.70 1

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

Sample No. Rb* Sr* Y* Zr* Nb* Ta* Cs* La* Ce*

JS_FE1709 27.1 215.8 22.4 60 5.80 0.20 1.30 17.00 36.40

JS_FE1710 29.8 436.4 22.9 105 11.20 0.80 1.40 21.80 43.80

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

Sample No. Pr* Nd* Sm* Eu* Gd* Tb* Dy* Ho* Er*

JS_FE1709 4.45 19.20 3.60 0.80 3.85 0.62 4.05 0.84 2.68

JS_FE1710 5.15 21.00 3.98 0.97 3.76 0.61 3.71 0.80 2.23

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

Sample No. Tm* Yb* Lu* Be* Hf*

JS_FE1709 0.36 2.43 0.40 -1 1.40

JS_FE1710 0.34 2.42 0.40 -1 2.70

Oxide analyses
( All values are in % )

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

JS_FE1709 Bedrock 24.30 3.41 0.31 63.80 0.22 2.56 3.90

JS_FE1710 Bedrock 35.80 6.59 0.58 38.40 0.61 5.19 8.62

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

Sample No. Na2O K2O P2O5 Loss Sum

JS_FE1709 0.57 0.56 0.80 -0.73 100.00

JS_FE1710 0.59 0.69 0.40 2.09 100.00

From - To	Activity	Comments
1972 - 1972	Geophysics
1978 - 1978	Geology	Company/Institution :Rana Gruber

Era:	Proterozoic	Period:	Neoproterozoic
Dating:		Method:
Genesis:	Sedeks	Form:	Lag
Main texture:	Båndet	Min. distribution:	Semi-massiv

	Province:	Caledonides
	Geotec.unit:	Helgeland Nappe Complex
	Tectonic complex:	Elsfjord unit
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Amphibole	Major mineral (>10%)
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Biotite	Subordinate mineral (1-10%)
Gangue mineral	Carbonate	Subordinate mineral (1-10%)
Gangue mineral	Apatite	Accessory mineral (<1%)
Ore mineral	Magnetite	Major mineral (>10%)

Relationship	Rock	Origin
Unknown	Karb.-aktinolittba.	Extrusive Original rock :Basalt
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Unknown	Primary layering	Strike/Dip :210 / 85	Syn-mineralisation ;...Effect :None

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

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Au#	As*
JS_FE1709	Bedrock	4	33	1	11	13	1.1	1
JS_FE1710	Bedrock	31	23	2	23	29	2.1	-1

Sample No.	Ba*	Mo*	Sn*	Se*	Ga*	V*	Th*	U*	W*
JS_FE1709	190	0.70	-1	-0.50	7.00	110	2.40	0.70	1
JS_FE1710	176	0.30	1	-0.50	8.30	98	4.30	0.70	1

Sample No.	Rb*	Sr*	Y*	Zr*	Nb*	Ta*	Cs*	La*	Ce*
JS_FE1709	27.1	215.8	22.4	60	5.80	0.20	1.30	17.00	36.40
JS_FE1710	29.8	436.4	22.9	105	11.20	0.80	1.40	21.80	43.80

Sample No.	Pr*	Nd*	Sm*	Eu*	Gd*	Tb*	Dy*	Ho*	Er*
JS_FE1709	4.45	19.20	3.60	0.80	3.85	0.62	4.05	0.84	2.68
JS_FE1710	5.15	21.00	3.98	0.97	3.76	0.61	3.71	0.80	2.23

Sample No.	Tm*	Yb*	Lu*	Be*	Hf*
JS_FE1709	0.36	2.43	0.40	-1	1.40
JS_FE1710	0.34	2.42	0.40	-1	2.70

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
JS_FE1709	Bedrock	24.30	3.41	0.31	63.80	0.22	2.56	3.90
JS_FE1710	Bedrock	35.80	6.59	0.58	38.40	0.61	5.19	8.62

Sample No.	Na2O	K2O	P2O5	Loss	Sum
JS_FE1709	0.57	0.56	0.80	-0.73	100.00
JS_FE1710	0.59	0.69	0.40	2.09	100.00