Norsk versjon | |||||
THE ORE DATABASE | |||||
Occurence 1833 - 104 Høgtuva 6 | |||||
(Object Id: 2857) (Last updated: 30.11.2015) |
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Location |
County: | Nordland | Municipality: | Rana (1833) |
Map 1:50000: | Mo i Rana (1927-1) | Map 1:250000: | Mo i Rana |
Coordinate system: | EU89-UTM Zone 33 |
East: | 448332 m. | North: | 7365647 m. |
Longitude: | 13.8431480 | Latitude: | 66.4060400 |
Show on map |
|
Resource |
Resource Type: | Special metals (Nb,Ta,Be,Li,Sc,REE) | Resource Subtype: | Beryllium | |
Element(s): | Be U Th Nb Y REE Zr Sn Zn |
Importance |
Raw material meaning: | Not Assessed (reg. 18.02.2015) |
Resources and production |
Activity: | Exploration | Reserves: | ||
Operating method: | Historical production: |
Products |
Element/product | Crude ore grade or quality | Reg. date | |
Be | 1.19 % | 22.05.1992 | |
Nb | 1.25 % | 22.05.1992 | |
Sn | .16 % | 22.05.1992 | |
Th | 3.19 % | 22.05.1992 | |
U | 1.01 % | 22.05.1992 | |
Y | .65 % | 22.05.1992 | |
Zn | 3.71 % | 22.05.1992 | |
Zr | 4.39 % | 22.05.1992 |
Operations |
From - To | Activity | Comments | |
1986 - 1986 | Geology | Company/Institution :NGU |
Mineralization |
Era: | Proterozoic | Period: | Mesoproterozoic | |
Dating: | 434 (-14\+14) million year | Method: | U/Pb | |
Genesis: | Metamorphic formation | Form: | Lens | |
Main texture: | Porphyroblastic | Min. distribution: | Disseminated (<20 % ore minerals) |
Main grain size: | Coarse grained (> 3 mm) | Main alteration: | Skarn formation |
Strike/Dip: | 360 / 25 | Direction: | ||
Plunge: |
Stratigraphic classification of host rock |
Era: | Proterozoic | Period: | Mesoproterozoic |
Province: | Caledonides | |
Geotec.unit: | Rødingsfjell Nappe Complex | |
Tectonic complex: | ||
Igneous complex: |
Group: | Høgtuvkomplekset | Formation: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Amphibole | Major mineral (>10%) | |
Gangue mineral | Pyroxene | Major mineral (>10%) | |
Gangue mineral | Potassic feldspar | Subordinate mineral (1-10%) | |
Gangue mineral | Plagioclase | Subordinate mineral (1-10%) | |
Gangue mineral | Quartz | Subordinate mineral (1-10%) | |
Gangue mineral | Fluorspar | Subordinate mineral (1-10%) | |
Gangue mineral | Biotite | Subordinate mineral (1-10%) | |
Gangue mineral | Epidote | Subordinate mineral (1-10%) | |
Gangue mineral | Calcite | Subordinate mineral (1-10%) | |
Gangue mineral | Chlorite | Accessory mineral (<1%) | |
Gangue mineral | Apatite | Accessory mineral (<1%) | |
Gangue mineral | Titanite | Accessory mineral (<1%) | |
Ore mineral | Zircon | Subordinate mineral (1-10%) | |
Ore mineral | Hoegtuvaite | Subordinate mineral (1-10%) | |
Ore mineral | Allanite | Subordinate mineral (1-10%) | |
Ore mineral | Danalite | Subordinate mineral (1-10%) | |
Ore mineral | Helvite | Accessory mineral (<1%) | |
Ore mineral | Pyrochlore | Accessory mineral (<1%) | |
Ore mineral | Thorite | Accessory mineral (<1%) | |
Ore mineral | Galena | Accessory mineral (<1%) | |
Ore mineral | Gadolinite | Accessory mineral (<1%) | |
Ore mineral | Chalcopyrite | Accessory mineral (<1%) | |
Ore mineral | Magnetite | Accessory mineral (<1%) | |
Ore mineral | Uraninite | Accessory mineral (<1%) | |
Ore mineral | Cassiterite | Accessory mineral (<1%) | |
Ore mineral | Pyrite | Accessory mineral (<1%) |
Lithology: |
Relationship | Rock | Origin | |
Unknown | Granitt | Intrusive Original rock :Granite |
|
Metamorphic facies :Amphibolite | |||
Unknown | Granittisk gneis | Extrusive Original rock :Rhyolite |
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Metamorphic facies :Amphibolite |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Unknown | Foliation | Strike/Dip :360 / 25 | Post-mineralisation ;...Effect :None |
Information(s) in free text format |
Free text |
Under den lite folierte, grovkornige granittlinsa i liggen av den mineraliserte gneisen (NO0746 Bordvedåga) er det flere utholdende flusspat- og karbonatrike gneislag, stedvis massiv flusspat, som strekker seg fra Sørfjellet i SØ til Trolldalsaksla i NV. På Trolldalsaksla er det lokal anrikning av Be-mineralene danalitt, helvin, høgtuvaitt og gadolinitt i en flusspat- og karbonatrik horisont. Mineraliseringen (0.5m bred og noen meter lang) karakteriseres ved skarnmineralogi (granat, diopsid, magnetitt) og høye konsentrasjoner av en rekke sporelementer. Tilknytningen til skarndannelse er usikker. Det er ellers i området ikke kjent lignende skarnifisering, hvilket ville være ventet med de uttallige karbonathorisontene. Mineraliseringen på Trolldalsaksla har en viss likhet med radioaktive, mørke zirkon-biotitt-segregasjoner som opptrer i og i nærheten av den mineraliserte gneisen. Enkelte av disse er også anriket på Be. På Sørfjellet (UTM 450050 7364500) opptrer beryll i flere tynne konkordante lag med flusspatrik gneis. Også en diskordant flusspat-beryll-anrikning i gneisen finnes i området. Analyse gir 0.36% Be. Området med de mineraliserte lagene er på minst 50m x 50m. |
Bibliography: |
From NGU's Reference Archive: |
Wilberg, Rune , 1987 |
Granitophile elements in granitoid rocks in Precambrian basement windows in Nordland, Northern Norway, with special reference to the rare-element enriched gneiss at Bordvedåga, Høgtuva window |
;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.87.043 |
Abstract: | |
This report gives the results of field work done in the Precambrian Høgtuva window, with minor comments on the other similar windows in Nordland. The aim for this work was to attain a better understanding of the genesis of the rare-element mineralization at Bordvedåga, and thereby provide guidelines for further prospecting for granitophile element deposits. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | |||
JSHog17 | Bedrock |
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NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Skjerp 1 |
(Object Id: 3658 104,01,00) |
|
Location |
County: | Nordland | Municipality: | Rana (1833) |
Map 1:50000: | Mo i Rana (1927-1) | Map 1:250000: | Mo i Rana |
Coordinate system: | EU89-UTM Zone 33 |
East: | 449982 m. | North: | 7364297 m. |
Longitude: | 13.8806240 | Latitude: | 66.3941990 |
Show on map |
|
Resource |
Resource Type: | Special metals (Nb,Ta,Be,Li,Sc,REE) | Resource Subtype: | Beryllium | |
Element(s): | Be U Th Nb Y REE Zr Sn Zn |
Resources and production |
Activity: | Exploration | Reserves: | ||
Operating method: | Historical production: |
Analyse Results |
from |
Deposit Area 1833 - 104 Høgtuva 6 |
Element analyses |
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.) |
Sample No. | Sample Type | Cu* | Zn* | Pb* | Co* | Ni* | As* | Ba* |
JSHog17 | Bedrock | 0 | 175 | 36 | 1 | 1 | 2 | 16 |
------------------ |
Sample No. | Sn* | Sb* | Bi* | Se* | Th* | U* | W* | Rb* | Sr* |
JSHog17 | 255 | 0 | 0 | 5.70 | 363.90 | 174.80 | 2 | 411.5 | 11.6 |
------------------ |
Sample No. | Y* | Zr* | Nb* | Ta* | Cs* | La* | Ce* | Pr* | Nd* |
JSHog17 | 894.2 | 14887 | 432.80 | 30.30 | 1.00 | 26.50 | 117.50 | 15.04 | 49.30 |
------------------ |
Sample No. | Sm* | Eu* | Gd* | Tb* | Dy* | Ho* | Er* | Tm* | Yb* |
JSHog17 | 16.91 | 0.60 | 22.35 | 8.87 | 91.61 | 33.49 | 179.46 | 45.04 | 375.56 |
------------------ |
Sample No. | Lu* | B* | Hf* | Tl* | |||||
JSHog17 | 49.83 | 6 | 595.70 | 3 |
Oxide analyses |
( All values are in % ) |
Sample No. | Sample Type | SiO2 | Al2O3 | TiO2 | Fe2O3 | MnO | MgO | CaO |
JSHog17 | Bedrock | 74.04 | 11.70 | 0.15 | 4.19 | 0.04 | 0.57 | 0.19 |
------------------ |
Sample No. | Na2O | K2O | P2O5 | Loss | Sum | ||||
JSHog17 | 4.12 | 4.05 | 0.02 | 0.20 | 99.00 |
The fact sheet was created on 05.05.2024 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
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