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Occurence 3007 - 030 Ullerentjern skjerp
(Object Id: 6191)
(Last updated: 19.01.2017)
Belongs to the Province: Ulleren

Location
County: Viken Municipality: Ringerike (3007)
Map 1:50000: Hønefoss (1815-3) Map 1:250000: Hamar
Coordinate system: EU89-UTM Zone 32
East: 559650 m. North: 6665875 m.
Longitude: 10.0735250 Latitude: 60.1255220
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Resource
Resource Type: Ferroalloys (Cr,Ni,Co,V,Mo,W) Resource Subtype: Nickel
Element(s): Ni Cu
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Operations
From - To Activity Comments
Pitting
1969 - 1969 Inspection Company/Institution :Norsk Hydro A/S
F.M. Vokes & T. Vrålstad
2000 - 2000 Sampling Company/Institution :NGU mineralressurser

Mineralization
Era: Proterozoic Period: Mesoproterozoic
Genesis: Orthomagmatic formation Form: Irregular
Main texture: Structureless Min. distribution: Irregular (scattered)
Main grain size: Coarse grained (> 3 mm) Main alteration:
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period: Mesoproterozoic
Province: South Norwegian Basement Province
Geotec.unit: Kongsberg Complex
Tectonic complex:
Igneous complex:
Group: Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Amphibole Subordinate mineral (1-10%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Pyrite Subordinate mineral (1-10%)
Ore mineral Magnetite Subordinate mineral (1-10%)
Ore mineral Chalcopyrite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock Norite Intrusive
Original rock :Norite

Information(s) in free text format
Free text
This pit is located at the SE extreme of the grassland near the Langdalstjønna lake. It consists of a 6H5m trench, 2-5m deep. Pyrrhotite occurs occasionally in 2-3mm large grains in the gabbro/norite rock that occurs throughout the area in minor amounts. In a small tailings heap, massive coarse pyrrhotite in 1-2cm grains was found, together with millimetre sized magnetite and traces of chalcopyrite.

Bibliography:
From NGU's Reference Archive:
Vokes, F.M.; Vrålstad, T. , 1969
Rapport over feltarbeidene i Ringerike, sommeren 1969
;Norsk Hydro / NGU;RAPPORT;NH-arkivet; No.NH 52;38+kart pages
Abstract:
Sommerens arbeide har gitt en meget god innsikt i opptreden av de Ni-Cu førende sulfidiske forekomster i en betydelig del av Ringerikes nikkelmalmprovins. Arbeidet, som har vært av rekognoserende natur pga begrenset antall medarbeidere og tid, har ført til forståelse av forekomstmåte ved de fleste viktige gruver og skjerp. Omtalte og befarte forekomster: Grefsrud skjerp, Ertelien, Skjerpevik gruve, Kauserud skjerp, Ullentjern skjerp, Orretjern skjerp,Skog (Skaug) gruve, Tysklands gruve, Langedals gruve (inkl. Bekken og Støvern gruver), Støverntangen gruve. Fins også i BV-arkivet (DMFs database for undersøkelsesrapporter) merket BV 1345.

Ryan, M.J. , 1970
Preliminary report on field-work in Ringerike, Bamble and Tvedestrand-Laget district
;Norsk Hydro / NGU;RAPPORT;NH-arkivet; No.NH 40A;24+kart pages
Abstract:
Kopi i perm NH 272 (mangler kart)

Fieldsamples
Sample No. Sample type Miscellanrous
BU0384.01 Dump
Sampler: T. Bjerkgård/I. Henderson/...Stored: Løkken/...Size(kg): 3
Comment: Massive coarse (1-2 cm) pyrrhotite with lesser mm-sized magnetite and trace of chalcopyrite. Sample from several pieces.
No. of registrated element analyses = 1
RING-10 Dump
Sampler: T. Bjerkgård/...Stored: Løkken
Comment: Massive po with accessory cpy
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 3007 - 030 Ullerentjern skjerp

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#
BU0384.01 Dump 1156 11 2 652 2974 .2 5.0
RING-10 Dump 3600 369 9 302 1390 1.3 10.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*
BU0384.01 3.0 37.0 13 .4 10 1.00 4 2
RING-10 -5.0 2.0 7 1.0 20 -1.00 -1 2 1
------------------
Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%
BU0384.01 23.10 12 60 39 34.60
RING-10 8.00 8.00 -1.00 -1.00 9.71 237 653 1800 25.40
------------------
Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*
BU0384.01 1.00 4.00 1 12.0
RING-10 -1.00 -1.00 -1 1.0 55.0 3.0 1 1.00 -1.00
------------------
Sample No. Cs* La* Ce* B* Li* Be* Sc* Ti* Te*
BU0384.01 2.00 2
RING-10 2.00 1.00 2.00 11 -1 33.00 2220 -1.00
------------------
Sample No. Hf* Re* Tl*
BU0384.01
RING-10 -1.00 -1 -1


The fact sheet was created on 26.10.2021

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