(Last updated: 08.03.2021)
|
|
Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 4030 - 008 Veneli | |||||
| (Object Id: 5769) (Last updated: 08.03.2021) |
|||||
|
|
| Location |
| County: | Telemark | Municipality: | Nissedal (4030) |
| Map 1:50000: | Nissedal (1613-3) | Map 1:250000: | Skien |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 472338 m. | North: | 6559480 m. |
| Longitude: | 8.5160820 | Latitude: | 59.1735730 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Importance |
| Raw material meaning: | Not Assessed (reg. 18.02.2015) |
| Resources and production |
| Activity: | Test mining | Reserves: | ||
| Operating method: | Underground mining | Historical production: |
Operations |
| From - To | Activity | Comments | |
| 1908 - 1914 | Test mining | Company/Institution :Halvor Reine | |
| 1911 - 1911 | Inspection | Company/Institution :Per Mortensen |
Mineralization |
| Era: | Proterozoic | Period: | Mesoproterozoic | |
| Genesis: | Unknown | Form: | ||
| Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Mesoproterozoic |
| Province: | East Norwegian Basement Province | |
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Feldspar | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Hornblende | Major mineral (>10%) | |
| Gangue mineral | Epidote | Subordinate mineral (1-10%) | |
| Gangue mineral | Biotite | Subordinate mineral (1-10%) | |
| Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
| Gangue mineral | Calcite | Accessory mineral (<1%) | |
| Gangue mineral | Apatite | Accessory mineral (<1%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Ilmenite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrrhotite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Quartz-feldspar gneiss | Extrusive | |
| Metamorphic facies :Amphibolite | |||
| Host rock | Amphibolite | Intrusive Original rock :Gabbro |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :225 / 50 | Post-mineralisation ;...Effect :Controls |
Information(s) in free text format |
| Description |
| Forekomsten befinner seg oppe i den bratte lia øst for Nisser ved Fjonesundet. Det er enkel adkomst via en gammel traktorvei opp fra vannet ved gården Skeidmo. Det er en stoll i SØ retning (125 grader) som er vannfylt innenfor en 10 m åpen skjæring. Tippen utenfor stollen og skjæringen anslås til ca. 350 kbm. Det er lite informasjon om drift i Veneli. Det er beskrevet en forekomst i området i Vogt (1895) og det var tydeligvis aktivitet i området i 1911 utført av Halvor Reini, i følge kort rapport av Per Mortensen (BA 3437). Mortensen beskriver en båndet hornblendebergart med bånd av magnetitt og en del impregnasjon over en samlet mektighet av 2-3 meter. Malmsonen er fulgt over en lengde på noe over 100 m og er totalt opptil 20 m bred. Mortensen anbefaler videre undersøkelser inntil jernbanen til Tveitsund er ferdig, da det kan bli snakk om større dagbruddsdrift. Malmsonen har en mektighet på 2-3 m og består av flere lag/striper med dels massiv magnetitt, typisk 10-50 cm tykke. Disse opptrer parallell foliasjonen/skifrigheten i omgivende båndet til sliret amfibolitt, som dels er gabbroisk i partier. Det er også enkelte striper med kvarts-plagioklasdominert gneiss/skifer. Retningen på foliasjonen er ca. 225 grader/50 grader. I tilknytning til malmsonen er det også enkelte linser rik i grovkornet hornblende og som inneholder litt pyrrhotitt. |
| Photo(s) from the Deposit area: |
|
Bibliography: |
| From NGU's Reference Archive: |
| Mitchell, Roger H. , 1967 |
| The precambrian rocks of the Telemark area in south central Norway. |
| ;Norsk geologisk forening;TIDSSKRIFTARTIKKEL;Norsk geologisk tidsskrift; No.47 (4);295-332 pages |
| Abstract: | |
| The Precambrian metamorphic rocks of the Nissedal supracrustal series, a thick sequence of basic and acidic lavas with associated agglomerates, has been intruded by gabbroic rocks and then been metamorphosed to amphibolite and epidote amphibolite grade by two periods of regional metamorphism. During the metamorphism, basic lavas were converted into amphibolites and the acidic lavas into leptites. The gabbro and its associated pegmatitic phase were metamorphosed to hyperite and ødegårdite respectively. Extensive granitisation accompanied the second metamorphic event causing large amounts of the supracrustal rock to become converted into granite-gneiss. Lesser amounts of banded gneiss, hornblende gneiss and migmatic were also formed from the supracrustal rocks at this time. The occurrence of lamprophyre dykes of Permian(?) age is noted and the Søftestad iron ore deposit is briefly described. |
| Mortensen, P. , 1911 |
| Venelid jerngrube. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 3437;1 pages |
| Abstract: | |
| Befaring av en magnetittmineralisert amfibolitt. Malmsonen er 20 m mektig med lag av ren magnetitt impregnasjoner. |
| Vogt, Johan H.L. , 1895 |
| Nissedalens jernmalmforekomst (i Thelemarken) |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.17;1-62 pages |
| Abstract: | |
| Forkortet: Diese Abhandlung bespricht ein besonders durch seinen ausserordentlich hohen Apatitrechtum ausgezeichnetes Eisenerzlager in Nissedal in Telemark, im südlichen Norwegen. Die Apatitbeimischung steigt gelegentlich bis auf 20 Gewichtprocent Apatit (=3.5% Phosphor), und das Erz kann im Grossen mit 58-60% Eisen und 1-3, im Durchschnitt 1.75-2% Phosphor, geliefert werden (s. Analysen S.17-22). |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TB-BITE-12 | Dump |
|
||||
| TB-BITE-13 | Dump |
|
||||
| TB-BITE-14 | Dump |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Skjerp 1 |
| (Object Id: 37622 8,01,00) |
|
|
| Location |
| County: | Telemark | Municipality: | Nissedal (4030) |
| Map 1:50000: | Nissedal (1613-3) | Map 1:250000: | Skien |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 472386 m. | North: | 6559464 m. |
| Longitude: | 8.5169240 | Latitude: | 59.1734410 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Pitting | Reserves: | ||
| Operating method: | Historical production: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Hornblende | Major mineral (>10%) | |
| Gangue mineral | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Biotite | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Ilmenite | Subordinate mineral (1-10%) |
Information(s) in free text format |
| Free text |
| Utsprengt grøft opp langs lia, ca. 15 m lang i øst-vest retning. Tynne lag, opptil 4 cm, med grovkornet magnetitt i gabbroisk/amfibolittisk bergart. Også mer finkornet magnetitt i enkelte lag. Mektigheten på sonen her er umulig å anslå, men sannsynligvis bare noen dm. |
| Photo(s) from the Deposit area: |
|
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| JS-TE1901 | Dump |
|
||||
| TB-BITE 19-11 | Dump |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 4030 - 008 Veneli |
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-TE1901 | Dump | 699 | 69 | 2 | 272 | 281 | -.1 | 1.0 |
| TB-BITE-12 | Dump | 2 | 122 | 1 | 50 | 22 | -.1 | -1.0 |
| TB-BITE-13 | Dump | 6 | 117 | -1 | 48 | 23 | -.1 | 1.0 |
| TB-BITE-14 | Dump | 1 | 117 | 2 | 55 | 25 | -.1 | -1.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
| JS-TE1901 | -5.0 | 2.0 | 2 | -.1 | 80 | 4.00 | 2 | -1 | -1 |
| TB-BITE-12 | -5.0 | 2.0 | -1 | -.1 | 70 | 2.00 | 3 | -1 | -1 |
| TB-BITE-13 | -5.0 | 1.0 | -1 | -.1 | 90 | 1.00 | 3 | -1 | -1 |
| TB-BITE-14 | -5.0 | 2.0 | 2 | -.1 | 50 | 1.00 | 9 | -1 | -1 |
| ------------------ |
| Sample No. | Se* | Ga* | Ge* | In* | S% | V* | Cr* | Mn* | Fe% |
| JS-TE1901 | 4.00 | 32.00 | -1.00 | -1.00 | 4.40 | 278 | 5 | 1020 | 34.10 |
| TB-BITE-12 | 1.00 | 49.00 | 1.00 | -1.00 | -.01 | 456 | 32 | 914 | 50.00 |
| TB-BITE-13 | -1.00 | 49.00 | 1.00 | -1.00 | .01 | 513 | 12 | 1040 | 49.10 |
| TB-BITE-14 | -1.00 | 33.00 | 1.00 | -1.00 | -.01 | 227 | 10 | 1600 | 20.70 |
| ------------------ |
| Sample No. | Th* | U* | W* | Rb* | Sr* | Y* | Zr* | Nb* | Ta* |
| JS-TE1901 | 3.00 | 2.00 | -1 | 14.0 | 148.0 | 50.0 | 74 | 6.00 | -1.00 |
| TB-BITE-12 | -1.00 | -1.00 | -1 | 14.0 | 117.0 | 3.0 | 19 | 1.00 | -1.00 |
| TB-BITE-13 | -1.00 | -1.00 | -1 | 26.0 | 80.0 | 15.0 | 38 | 4.00 | -1.00 |
| TB-BITE-14 | -1.00 | 1.00 | -1 | 6.0 | 79.0 | 169.0 | 251 | 5.00 | -1.00 |
| ------------------ |
| Sample No. | Cs* | La* | Ce* | Li* | Be* | P* | Sc* | Ti* | Te* |
| JS-TE1901 | 1.00 | 50.00 | 108.00 | 9 | -1 | 9020 | 14.00 | 17850 | -1.00 |
| TB-BITE-12 | 1.00 | 1.00 | 2.00 | 4 | -1 | 20 | 3.00 | 13650 | -1.00 |
| TB-BITE-13 | 2.00 | 3.00 | 8.00 | 7 | -1 | 610 | 7.00 | 15100 | -1.00 |
| TB-BITE-14 | -1.00 | 15.00 | 44.00 | 13 | 5 | 3620 | 59.00 | 5980 | -1.00 |
| ------------------ |
| Sample No. | Hf* | Re* | Tl* | ||||||
| JS-TE1901 | 2.00 | -1 | -1 | ||||||
| TB-BITE-12 | -1.00 | -1 | -1 | ||||||
| TB-BITE-13 | -1.00 | -1 | -1 | ||||||
| TB-BITE-14 | 7.00 | -1 | -1 |
| The fact sheet was created on 20.04.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |