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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1755 - 008 | |||||
| (Last updated 15.des.1998) | |||||
Name of Deposit Area : Rossvika |
| (Object Id : 1755,008,00,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Leka (1755) |
| Map 1:50000: | Austra (1725-2) | Map 1:250000: | Vega |
| Marking point: | Longitude: | 11.8065700 | Latitude: | 65.0715660 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 631960 m. | Y-coord: | 7219362 m. |
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| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Sulphides | |
| Element(s): | Kis |
| Production |
| Activity: | Exploration | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
| Importance |
| Public: | Not Assessed (reg. 18.02.2015) |
| Economical: | Not classified/evaluated |
Mineralization |
| Era: | Proterozoic | Period: | ||
| Dating: | Method: | |||
| Genesis: | Orthomagmatic formation | Form: | Lens | |
| Main texture: | Banded | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | 250 / 80 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Potassic feldspar | Major mineral (>10%) | |
| Gangue mineral | Biotite | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Subordinate mineral (1-10%) | |
| Ore mineral | Sphalerite | Accessory mineral (<1%) | |
| Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Granodioritic gneiss | Intrusive Original rock :Granodiorite |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :250 / 80 | Post-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Det er ikke skjerpet på mineraliseringen. Den skjæres av veien og er blottet i ca 15 m lengde. Bergarten i området er middels- til grovkornet granodiorittisk gneis, delvis migmatittisk, med slirer og bånd. Mineraliseringen er opptil 0.5 m mektig og opptrer stratabundet i forhold til gneisens bånding og foliasjon. Sulfidene (ca. 5 % svovelkis, noe magnetkis og spor av kobberkis og sinkblende) opptrer som disseminasjon og i smale striper i gneis som skiller seg ut fra heng og ligg ved lavere hornblende-innhold (granittisk sammensetning, prøve 02). Deler av mineraliseringen fører cm-store feltspatslirer (01). |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| NT0191.01 | Bedrock |
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| NT0191.02 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1755 - 008 Rossvika |
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# |
| NT0191.01 | Bedrock | 111 | 71 | 6 | 14 | 12 | .5 | 12.0 |
| NT0191.02 | Bedrock | 74 | 66 | 12 | 14 | 15 | 1.1 | 20.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| NT0191.01 | 3.0 | 2.0 | 2 | .6 | 92 | 65.00 | 2 | 6 | .87 |
| NT0191.02 | 1.0 | 1.0 | 7 | .4 | 40 | 35.00 | 2 | 25 | 2.14 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| NT0191.01 | 44 | 20 | 327 | 2.87 | 17.00 | 5.00 | 1 | 10.0 | 21.00 |
| NT0191.02 | 44 | 38 | 251 | 3.70 | 8.00 | 5.00 | 1 | 15.0 | 14.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| NT0191.01 | 4 | ||||||||
| NT0191.02 | 6 |
| The fact sheet was created on 19.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |