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THE ORE DATABASE | |||||
Deposit Area 1636 - 041 | |||||
(Last updated 13.apr.2020) |
Name of Deposit Area : Brannåsen |
(Object Id : 1636,041,00,00) |
Location |
County : | Sør-Trøndelag (16) | Municipality : | Meldal (1636) |
Map 1:50000: | Hølonda (1521-2) | Map 1:250000: | Trondheim |
Marking point: | Longitude: | 9.8594820 | Latitude: | 63.1298880 |
EU89-UTM Zone 32 | (Coordinates IS confirmed) |
X-coord: | 543340 m. | Y-coord: | 7000351 m. |
|
Commodity |
Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Sulphides | |
Element(s): | Kis |
Production |
Activity: | Pitting | Reserves: | ||
Prod. method: | Production: | |||
Prod. status: | Volume of dump: | 3 m3 |
Importance |
Public: | Not Assessed (reg. 18.02.2015) |
Economical: | Minor interest , (Confirmed 02.des.2019 by Jan Sverre Sandstad) |
Operations |
From - To | Activity | Comments | |
1954 - 1954 | Geophysics | Company/Institution :NGU | |
Turam | |||
1980 - 1980 | Geology | Company/Institution :T. Grenne | |
1981 - 1981 | Geophysics | Company/Institution :Orkla Industrier A/S | |
VLF, magnetometry | |||
1981 - 1981 | Core drilling | Company/Institution :Orkla Industrier A/S | |
4 holes |
Mineralization |
Era: | Paleozoic | Period: | Ordovician | |
Dating: | Method: | |||
Genesis: | Volcex | Form: | Layer | |
Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
Main grain size: | Fine grained (< 1 mm) | Main alteration: | Chloritisation |
Strike/Dip: | 30 / 45 | Direction: | ||
Plunge: |
Stratigraphic classification of host rock |
Era: | Paleozoic | Period: | Ordovician |
Province: | Caledonides | |
Geotec.unit: | Trondheim Nappe Complex | |
Tectonic complex: | Støren Nappe | |
Igneous complex: |
Group: | Støren Group | Formation: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Quartz | Major mineral (>10%) | |
Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
Ore mineral | Pyrite | Major mineral (>10%) |
Lithology: |
Relationship | Rock | Origin | |
Wall rock | Greenschist | Extrusive Original rock :Basalt |
|
Metamorphic facies :Greenschist |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Wall rock | Foliation | Strike/Dip :39 / 45 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
Free text |
Et lite skjerp ligger på toppen av åsen vest for Stormyra. Kun mindre røsking er gjort. En vasskishorisont som er minst 60 cm mektig overlagres av skifrig grønnstein. Den består linser og tynne lag med svært finkornet pyritt og spredte middelskornet pyritt-krystaller i veksling med mørke glimmer-/klorittrike laminer. Tidligere kartlegging viser at vasskisen er tilknyttet en cherthorisont med foldeombøyning nord for åsen (Grenne 1982). Skjerpet ligger på flanken av denne folden. |
Bibliography: |
References not to be found in NGU's Reference Archive.: |
Grenne, T., 1982: Geological, geophysical and diamond drilling in the Brannåsen area. Report Orkla Industrier A/S LV 10 (BV 1936) |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
JS-M1935 | Bedrock |
|
NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Brannåsen SV |
(Object Id : 1636,041,01,00) |
Location |
County : | Sør-Trøndelag (16) | Municipality : | Meldal (1636) |
Map 1:50000: | Hølonda (1521-2) | Map 1:250000: | Trondheim |
Marking point: | Longitude: | 9.8595870 | Latitude: | 63.1297160 |
EU89-UTM Zone 32 | (Coordinates IS confirmed) |
X-coord: | 543346 m. | Y-coord: | 7000331 m. |
|
Commodity |
Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Sulphides | |
Element(s): | Kis |
Production |
Activity: | Pitting | Reserves: | ||
Prod. method: | Production: | |||
Prod. status: | Volume of dump: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Quartz | Major mineral (>10%) | |
Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
Ore mineral | Pyrite | Major mineral (>10%) |
Lithology: |
Relationship | Rock | Origin | |
Wall rock | Chert | Sedimentary Original rock :Exhalite |
|
Metamorphic facies :Greenschist |
Information(s) in free text format |
Free text |
En liten blotning og flere større blokker viser at vasskisen kan være minst 1 m mektig. Mindre blokker av gråhvit chert finnes også i lokaliteten, men det er ingen andre blotninger i nærheten. |
Bibliography: |
References not to be found in NGU's Reference Archive.: |
Grenne, T. 1982. Geological, geophysical and diamond drilling investigations in the Brannåsen area. BV 1936, 10s. + vedlegg |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
JS-M1936 | Dump |
|
NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
from |
Deposit Area 1636 - 041 Brannåsen |
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-M1935 | Bedrock | 556 | 397 | 16 | 20 | 88 | .4 | 6.0 |
JS-M1936 | Dump | 363 | 594 | 9 | 15 | 88 | .3 | 14.0 |
------------------ |
Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
JS-M1935 | -5.0 | 4.0 | 18 | 1.4 | 10 | 63.00 | 1 | 2 | 0 |
JS-M1936 | 5.0 | 3.0 | 211 | 1.9 | 60 | 10.20 | 1 | 3 | 0 |
------------------ |
Sample No. | Se* | Ga* | Ge* | In* | S% | V* | Cr* | Mn* | Fe% |
JS-M1935 | 5.00 | 9.14 | 0.41 | 0.08 | 10.00 | 181 | 47 | 1000 | 30.80 |
JS-M1936 | 7.00 | 10.95 | 0.62 | 0.18 | 10.00 | 217 | 61 | 1440 | 29.20 |
------------------ |
Sample No. | Th* | U* | W* | Rb* | Sr* | Y* | Zr* | Nb* | Ta* |
JS-M1935 | 3.90 | 10.50 | 0 | 0.3 | 23.1 | 20.8 | 52 | 4.20 | 0.29 |
JS-M1936 | 6.30 | 8.60 | 0 | 5.5 | 21.0 | 35.6 | 65 | 5.90 | 0.40 |
------------------ |
Sample No. | Cs* | La* | Ce* | Li* | Be* | Na* | Mg* | Al* | P* |
JS-M1935 | 0.30 | 8.50 | 21.70 | 10 | 0 | 0 | 2 | 3 | 590 |
JS-M1936 | 0.63 | 35.90 | 67.70 | 15 | 0 | 0 | 3 | 4 | 1270 |
------------------ |
Sample No. | K * | Ca* | Sc* | Ti* | Te* | Hf* | Re* | Tl* | |
JS-M1935 | 0 | 1 | 8.60 | 0 | 0.16 | 1.30 | 40 | 0 | |
JS-M1936 | 0 | 1 | 9.90 | 0 | 0.15 | 1.60 | 18 | 0 |
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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