|
|
English version | ||||
| INDUSTRIMINERALDATABASEN | |||||
| Forekomstområde 1836 - 301 | |||||
| (Sist oppdatert 20.jan.2022) | |||||
Navn på deposit area : Hestmonkallen |
| (Objekt Id : 1836,301,00,00) |
| Lokalisering |
| Fylke : | Nordland (18) | Kommune : | Rødøy (1836) |
| Kart 1:50000: | Rødøy (1828-2) | Kart 1:250000: | Mo i Rana |
| Markeringspunkt: | Lengdegrad: | 12.8046470 | Breddegrad: | 66.5515030 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-koord: | 402533 m. | Y-koord: | 7383097 m. |
|
|
| Materialtype |
| Hovedtype: | Olivin | Subtype: | Olivin |
| Production |
| Activity: | Prospektering | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
| Betydning |
| Offentlig: | Little Importance (reg. 18.02.2015) |
| Economical: | Lite viktig , (Confirmed 20.feb.2006 by Havard Gautneb) |
Products |
| Element/product | Crude ore grade or quality | |
| OLIVIN | % |
Mineralization |
| Era: | Paleozoic | Period: | ||
| Dating: | Method: | |||
| Genesis: | Form: | Linse | ||
| Main texture: | Strukturløs | Min. distribution: | Massiv |
| Main grain size: | Meget ujevnkornet |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Not defined | Pyroxene | Major mineral (>10%) | |
| Not defined | Serpentine | Major mineral (>10%) | |
| Not defined | Talc | Subordinate mineral (1-10%) | |
| Not defined | Magnesite | Subordinate mineral (1-10%) |
Opplysning(er) i fritekstformat |
| Fri tekst |
| Harzburgittkropp med 1-3 cm store pyroksenkrystaller i en finkornig masse av opprinnelig olivin, nå som serpentin, noe talk og magnesitt. Sto tidligere som olivinforekomst,- dette er hermed forandret til ultramafitt (uspes.) |
Bibliography: |
| From NGU's Reference Archive: |
| Karlsen, Tor Arne ; Gautneb, Håvard ; Lund, Bjørn , 1999 |
| Status-report on talc-prospecting in Helgeland, northern Norway. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.99.068;? pages |
| Abstract: | |
| A prospecting programme for talc has been carried out in Helgeland. The results are both good and bad; a new talc deposit has been found in Kvanndalen, a few km west of Altermark. The deposit are exposed, and the size is not yet known, except that the maximum width is around 50 metres. To be able to use th ore, there must either be a market for the assemblage talc-breunnerit-olivine, or it must be possible to remove the olivine. A further deposit of interest occurs in Misvær. Otherwise, talc is rather uncommon in the numerous ultramafic lenses around the Høgtuva-, Sjona- and Svartisen windows. The ultramafic lenses are dominated by the metamorphic assemblage enstatite-anthophyllite-carbonate with or without olivine. It is concluded that the metamorphic grade has, in general, been too high in the western area and that possible pre-existing talc-carbonate assemblages have been altered to the minerals above. The deposit in Kvanndalen probably represent the margin of what can be termed the Altermark Talc Province. Only olivine has been included in the talc-carbonate assemblage, while bodies further to the west carry olivine, enstatite and anthophyllite. |
| Faktaarket ble generert 13.06.2026 |
| Spørsmål eller kommentarer vedrørende faktaarket kan mailes til: ressursdatabaser@ngu.no |
| Copyright © 2026 Norges geologiske undersøkelse |