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THE ORE DATABASE
Occurence 5028 - 004 Undurshaugen
(Object Id: 4338)
(Last updated: 27.01.2023)
Location
County: Trøndelag Municipality: Melhus (5028)
Map 1:50000: Trondheim (1621-4) Map 1:250000: Trondheim
Coordinate system: EU89-UTM Zone 32
East: 569275 m. North: 7020329 m.
Longitude: 10.3821750 Latitude: 63.3051010
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis
Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

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


Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Volcex Form: Irregular
Main texture: Vein network Min. distribution: Disseminated (<20 % ore minerals)
Main grain size: Fine grained (< 1 mm) Main alteration: Chloritisation
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province: Caledonides
Geotec.unit: Trondheim Nappe Complex
Tectonic complex: LVB ofuiolittfragmenter
Igneous complex:
Group: Formation: Bymarkgrønnsteinen

Mineralogy
Relationship Mineral Amount
Gangue mineral Feldspar Major mineral (>10%)
Gangue mineral Chlorite Major mineral (>10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Pyrrhotite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock Greenstone Extrusive
Original rock :Basalt
Metamorphic facies :Greenschist

Information(s) in free text format
Free text
Skjerpet ligger nederst i en skogkledd skråning vest for en større myr på østsida av Undurshaugen. Enkleste adkomst er langs en traktorvei opp langs Svartdalen fra Rødde. En 3 m lang dagskjæring fører inn til en 2 m lang stoll/innhugg med retning 290°. Et mindre på innhugg finnes også 10 m sør for skjæringen. Det er 2 m langt og opptil 1,5 m høyt. Bergarten er noe rusten, men kun mindre sulfidmineraliseringer er observert. De består av disseminasjon, stikk og årenett av svovelkis og magnetkis i svært oppsprukket grønnstein. Området omkring er svært overdekket av løsmasser. Forekomsten er ubetydelig, men viser at mindre arbeider er utført mange steder i Vassfjellet hvor det er synlig rust i dagen.

Fieldsamples
Sample No. Sample type Miscellanrous
JS-T2211 Dump
Sampler: J.S. Sandstad/...Stored: Løkken/...Size(kg): 2
Comment: Pyrite+pyrrhotite, fine grained, network in dark green greenstone
No. of registrated element analyses = 1
JS-T2212 Dump
Sampler: J.S. Sandstad/...Stored: Løkken/...Size(kg): 2
Comment: Pyrite+pyrrhotite, dissemination/veinlets in greenstone
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 5028 - 004 Undurshaugen

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-T2211 Dump 741 442 12 89 74 .4 22.0
JS-T2212 Dump 938 551 6 53 38 .5 16.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*
JS-T2211 -5.0 -1.0 38 .4 -10 0.51 2 1 1
JS-T2212 -5.0 -1.0 15 .5 10 3.54 2 1 0
------------------
Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%
JS-T2211 23.00 16.40 0.18 0.25 12.25 263 131 2390 21.10
JS-T2212 7.00 22.10 0.18 0.21 6.35 356 42 2040 19.95
------------------
Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*
JS-T2211 0.25 0.40 0 0.3 64.3 33.3 31 1.10 0.11
JS-T2212 0.36 1.10 0 1.5 91.0 31.2 62 1.70 0.15
------------------
Sample No. Cs* La* Ce* Li* Be* P* Sc* Te* Hf*
JS-T2211 -0.05 3.00 9.60 13 0 510 31.30 0.21 1.10
JS-T2212 0.26 4.30 12.70 13 0 630 38.60 0.14 2.20
------------------
Sample No. Re* Tl*
JS-T2211 -2 0
JS-T2212 3 0

The fact sheet was created on 03.05.2024
Questions or comments regarding the fact sheet can be emailed to:
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