Norsk versjon
THE ORE DATABASE
Deposit Area 1833 - 006
(Last updated 03.nov.1999)

Name of Deposit Area : Lalia
(Object Id : 1833,006,00,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.5724080 Latitude: 66.3149140
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 480832 m. Y-coord: 7355077 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu Zn
Production
Activity: Pitting Reserves:
Prod. method: Production: ,005 thousand tons
Prod. status: Not yet active Volume of dump: 20 m3

Importance
Public: Not Assessed (reg. 18.02.2015)
Economical: Not classified/evaluated

Operations
From - To Activity Comments
1911 - 1911 Pitting

Mineralization
Era: Proterozoic Period: Neoproterozoic
Dating: Method:
Genesis: Sedex Form: Lens
Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration: Silicification
Strike/Dip: 100 / 65 Direction: 265
Plunge: 55
Stratigraphic classification of host rock
Era: Proterozoic Period: Neoproterozoic
Province: Caledonides
Geotec.unit: Rødingsfjell Nappe Complex
Tectonic complex: Øverste allokton
Igneous complex:
Group: Plurdalsgruppen Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Calcite Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Muscovite Subordinate mineral (1-10%)
Gangue mineral Albite Subordinate mineral (1-10%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Chalcopyrite Major mineral (>10%)
Ore mineral Pyrite Subordinate mineral (1-10%)
Ore mineral Sphalerite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock Kalkspatmarmor Sedimentary
Original rock :Limestone
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Primary layering Strike/Dip :100 / 65 Syn-mineralisation ;...Effect :Controls
Host rock Foliation Strike/Dip :100 / 65 Post-mineralisation ;...Effect :Modifies
Host rock Fold axis Strike/Dip :265 / 55 Post-mineralisation ;...Effect :Controls

Information(s) in free text format
Free text
Lalia er det østligste skjerp i den over 20 km lange skarn/marmor-sonen som strekker seg fra Båsmo og østover til ca. 500 m øst for Lalia skjerp. Skjerpet ligger i elveskrenten NV for elva. Bergarten er middelskornet kalkspatmarmor med litt muskovitt. Malmsonen er opptil 25 cm mektig. I den mektigste delen er det noen innblandete lag av marmor med sulfid-disseminasjon. Malmen er sonert med ca. 5 cm mektig massiv kobberkis i liggen (prøve 01). I sentrum dominerer magnetkis (03), mens hengen igjen er anriket på kobberkis - dog ikke så mye som i liggen. Store deler av malmsonen er kvartsittisk (04), sannsynligvis som følge av silifisering. Ellers er det endel kalkspat, muskovitt og albitt i malmen. I nærheten av malmen har marmoren sulfid-disseminasjon (02).

Bibliography:
References not to be found in NGU's Reference Archive.:
Schenk, M. 1987: Skarn formation and mineralization in the Bossmo and Plura area. Unpubl. Diploma in Geology. Swiss Federal Inst. of Technology, Zürich.


Rasmussen, F.O. 1984: Reinfjell-Plura området - en del av en dobbel foldet duplex. Upubl.hovedoppg., Inst. for Almen Geologi, Københavns Univ.

Fieldsamples
Sample No. Sample type Miscellanrous
NO0035.01 Bedrock
Sampler :Wilberg, R./...Stored :Løkken
Comment :Cpy-rik malm med noe po og sl, fra liggkontakt.
No. of registrated element analyses = 1
NO0035.02 Bedrock
Sampler :Wilberg, R./...Stored :Løkken
Comment :Muskovittholdig kalkspatmarmor med diss. sulfider, fra hengkontakt.
No. of registrated element analyses = 1
NO0035.03 Bedrock
Sampler :Wilberg, R./...Stored :Løkken
Comment :Po-cpy-malm som disseminasjon i muskovittholdig kalkspatmarmor.
No. of registrated element analyses = 1
NO0035.04 Bedrock
Sampler :Wilberg, R./...Stored :Løkken
Comment :Sl-cpy-po-malm i kvartsitt.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality : Skjerp 1
(Object Id : 1833,006,01,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.5735230 Latitude: 66.3149170
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 480882 m. Y-coord: 7355077 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu Zn
Production
Activity: Pitting Reserves:
Prod. method: Production:
Prod. status: Volume of dump:


Information(s) in free text format
Free text
Lite gjengrodd skjerp i marmor. Sulfider ikke sett.


Analyse Results
from
Deposit Area 1833 - 006 Lalia

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#
NO0035.01 Bedrock 99999 40193 404 27 11 90.9 56.0
NO0035.02 Bedrock 2564 17339 139 14 6 2.9 11.0
NO0035.03 Bedrock 9592 14873 198 43 18 8.4 16.0
NO0035.04 Bedrock 19879 99999 213 31 20 13.7 31.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%
NO0035.01 1.0 2.0 123 403.6 41 28.00 24 67 25.65
NO0035.02 1.0 1.0 15 135.3 23 124.00 2 28 5.01
NO0035.03 4.0 3.0 206 105.5 31 195.00 2 117 14.11
NO0035.04 1.0 2.0 128 927.2 11 26.00 23 89 16.69
------------------
Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*
NO0035.01 4 6 1515 27.96 4.00 5.00 1 58.0 5.00
NO0035.02 6 8 1094 5.87 1.00 5.00 2 126.0 2.00
NO0035.03 8 21 2010 22.62 5.00 5.00 2 119.0 14.00
NO0035.04 3 8 1296 20.48 5.00 5.00 1 26.0 4.00
------------------
Sample No. B*
NO0035.01 27
NO0035.02 2
NO0035.03 3
NO0035.04 42


The fact sheet was created on 22.11.2024

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