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THE ORE DATABASE | |||||
Deposit Area 1721 - 003 | |||||
(Last updated 25.feb.2005) |
Name of Deposit Area : Molberg |
(Object Id : 1721,003,00,00) |
Location |
County : | Nord-Trøndelag (17) | Municipality : | Verdal (1721) |
Map 1:50000: | Stiklestad (1722-4) | Map 1:250000: | Trondheim |
Marking point: | Longitude: | 11.4907980 | Latitude: | 63.7557450 |
EU89-UTM Zone 32 | (Coordinates IS confirmed) |
X-coord: | 622869 m. | Y-coord: | 7072192 m. |
|
Commodity |
Main Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Sub Type: | Nickel | |
Element(s): | Ni Kis |
Production |
Activity: | Test mining | Reserves: | ||
Prod. method: | Underground mining | Production: | ||
Prod. status: | Disused, closed | Volume of dump: | 500 m3 |
Importance |
Public: | Little Importance (reg. 18.02.2015) |
Economical: | Minor interest , (Confirmed 18.feb.2005 by Havard Gautneb) |
Operations |
From - To | Activity | Comments | |
1996 - 1996 | Sampling | Company/Institution :NGU/Malmreg. |
Mineralization |
Era: | Paleozoic | Period: | ||
Dating: | Method: | |||
Genesis: | Orthomagmatic formation | Form: | ||
Main texture: | Structureless | Min. distribution: | Disseminated (<20 % ore minerals) |
Main grain size: | Fine grained (< 1 mm) | Main alteration: |
Strike/Dip: | 290 / 40 | Direction: | ||
Plunge: |
Stratigraphic classification of host rock |
Era: | Paleozoic | Period: |
Province: | Caledonides | |
Geotec.unit: | Trondheim Nappe Complex | |
Tectonic complex: | Skjøtingendekket | |
Igneous complex: |
Group: | Formation: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Amphibole | Major mineral (>10%) | |
Ore mineral | Pyrrhotite | Major mineral (>10%) | |
Ore mineral | Pentlandite | Major mineral (>10%) | |
Ore mineral | Pyrite | Subordinate mineral (1-10%) |
Lithology: |
Relationship | Rock | Origin | |
Host rock | Grønnstein | Extrusive Original rock :Basalt |
|
Metamorphic facies :Greenschist |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Host rock | Foliation | Strike/Dip :290 / 40 | Post-mineralisation ;...Effect :None |
Information(s) in free text format |
Free text |
Right behind the barn at Molberg, a 40m long adit runs SSW. Production probably dates from before 1880 according to the owner. The tailings heap has been levelled out and is covered with soil. The adit wasn¿t entered due to water and a fender to protect cattle from a shaft deeper inside. The few tailings blocks available (consisting of greenschist and/or amphibolite) only show weak mineralization with disseminated and veined pyrrhotite (sample 01). The rock face over the adit contains a 0.5m thick irregularly shaped rusted band exposed over 10-15m. The greenschist contains both pyrrhotite and pyrite, disseminated and in thin veinlets (sample 02). A few cm-thick quartz veins run parallel to the rusted band. The card file in the Bergarkiv says `presumably 7wt% Ni¿, which seems highly improbable from these field observations. As no chalcopyrite was observed either, it seems doubtful whether this is a Ni-Cu deposit at all. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
NT0116.01 | Bedrock |
|
NB! All analyse values are shown at the end of the printout.: |
Name of Sample point : Prøvepunkt 1 |
(Object Id : 1721,003,00,01) |
Location |
County : | Nord-Trøndelag (17) | Municipality : | Verdal (1721) |
Map 1:50000: | Stiklestad (1722-4) | Map 1:250000: | Trondheim |
Marking point: | Longitude: | 11.4901660 | Latitude: | 63.7554870 |
EU89-UTM Zone 32 | (Coordinates IS confirmed) |
X-coord: | 622839 m. | Y-coord: | 7072162 m. |
|
Commodity |
Main Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Sub Type: | Nickel | |
Element(s): | Ni Kis |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
NT0116.02 | Bedrock |
|
NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
from |
Deposit Area 1721 - 003 Molberg |
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# |
NT0116.01 | Bedrock | 44 | 73 | 5 | 14 | 20 | -.3 | -1.0 |
NT0116.02 | Bedrock | 58 | 55 | 4 | 39 | 23 | -.3 | 2.0 |
------------------ |
Sample No. | Pt# | Pd# | Rh# | As* | Cd* | Ba* | Mo* | Sb* | Bi* |
NT0116.01 | -1.0 | -1.0 | -1.0 | -2 | -.2 | 9 | -1.00 | -2 | -2 |
NT0116.02 | 2.0 | 3.0 | 2.0 | 2 | .6 | 7 | 2.00 | -2 | -2 |
------------------ |
Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* |
NT0116.01 | .33 | 48 | 44 | 834 | 4.91 | -2.00 | -5.00 | -2 | 8.0 |
NT0116.02 | .55 | 134 | 14 | 668 | 4.89 | -2.00 | -5.00 | -2 | 14.0 |
------------------ |
Sample No. | La* | B* | |||||||
NT0116.01 | 1.00 | -3 | |||||||
NT0116.02 | 2.00 | -3 |
The fact sheet was created on 19.05.2024 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
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