(Last updated: 26.01.2024)
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Norsk versjon | ||||
| THE NATURAL STONE DATABASE | |||||
| Occurence 1824 - 603 Bjørnålia | |||||
| (Object Id: 9184) (Last updated: 26.01.2024) |
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| Location |
| County: | Nordland | Municipality: | Vefsn (1824) |
| Map 1:50000: | Fustvatnet (1926-4) | Map 1:250000: | Mosjøen |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 422368 m. | North: | 7294194 m. |
| Longitude: | 13.3053080 | Latitude: | 65.7598960 |
| Show on map |
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| Resource |
| Resource Type: | Soapstone and serpentinite | Resource Subtype: | Soapstone | |
| Brickstone(Y/N): | N |
| Importance |
| Raw material meaning: | Not Assessed (reg. 21.03.2017) |
| Resources and production |
| Activity: | Stone quarrying | Reserves: | ||
| Operating method: | Open pit mining | Historical production: |
Products |
| Commercial Name | Product description |
| Bjørnå | Classification: Massive blocks | Colour: Green | |
| Play of colours : | Uniformity: | ||
| Lithology: | Grain size: |
Mineralogy: |
| Biotite | Major mineral (>10%) | ||
| Dolomite | Major mineral (>10%) | ||
| Talc | Major mineral (>10%) | ||
| Chlorite | Major mineral (>10%) | ||
| Tremolite | Subordinate mineral (1-10%) | ||
| Calcite | Subordinate mineral (1-10%) | ||
| Magnetite | Accessory mineral (<1%) | ||
| Pyrite | Accessory mineral (<1%) |
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Operations |
| From - To | Activity | Comments | |
| 1897 - 1958 | Regular production | Company/Institution :Nidaros Domkirkes Restaureringsarbeider |
Deposit rock |
| Lithology: | Soapstone | Weathering colour: | Yellow/brown staining | |
| Era: | Paleozoic | Period: | ||
| Genesis: | Metamorphic formation | Form: | ||
| Main texture: | Foliated |
| Main grain size: | Medium - coarse grained (1 - >3mm) | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Paleozoic | Period: |
| Province: | Caledonides | |
| Geotec.unit: | Helgeland Nappe Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Description |
| Old soapstone-quarry: 100 m long, 50 m wide and 30 m deep. The soapstone and the quarry occur along the western border of a serpentinite that continues 3-400 m towards south; altogether the ultramafic lens is around 600 m long. The soapstone is dark coloured and fine-grained. Microscopic investigation indicates that the soapstone is composed of chlorite and amphibole, while talc only occurs in very minor amounts (see Karlsen et al. 1999a,b for further details). |
| Photo(s) from the Deposit area: |
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Bibliography: |
| From NGU's Reference Archive: |
| Alnæs, Lisbeth Ingrid , 1994 |
| Kvalitet og bestandighet av naturstein. Påvirkningsfaktorer og prøvemetoder. |
| ;NTH Bergavd.;AVHANDLING |
| Oxaal, John , 1914 |
| Oversigt over den norske stenindustri |
| ;A.W. Brøggers Boktrykkeri;ARTIKKEL;Norges Jubilæumsutstilling 1914. Bergverksavdelingen.;167-176 pages |
| Rekstad, J. , 1924 |
| Hatfjelldalen beskrivelse til det geologiske generalkart. |
| ;Norges geologiske undersøkelse;KARTBESKRIVELSE; TIDSSKRIFTARTIKKEL;NGU; No.124;1-35 + ka pages |
| Abstract: | |
| The territory here descibed embraces the mountain district of Southern Helgeland between the Swedish-Norwegian frontier and the velley of Vefsn, and between 65 and 66 N. It is an inland region which nowhere reaches the sea. It is characterised by high mountains, deep valleys and many lakes of which the largest is Røsvatn. This lake covers an area of 191 square kilometres. The ignous rocks occuring here are granite, gabbro, peridotite and serpentine. Of these the granite has the greatest extension. It has for the most part a banded or streaked structure, due to pressure, crushing and shearing during the formation of the Norwegian mountain-chain. The granite occurs frequently as large laccolites, intruded at different levels, the one above the other. It often intersects the adjacent schists in dikes and veins in all directions. Partly it shows a porphyritic structure, with large crystals of feldspar scattered through the ground-mass. These crystals consist for the most part of microline. Much of the granite is light-coloured. Of dark minerals it contains only a small percentage of biotite; but here occur also darker varieties of granite which contain more biotite and some hornblende. |
| Foslie, Steinar , 1929 |
| Beretning om arbeidet i 5-årsperioden 1924-28. I. Feltarbeider: 1. Nordtrøndelag. 2. Tysfjord og Ofoten. 3. Rødsand jerngrube i Nordmøre. 4. Bjørnådalens kleberstensbrudd i Vefsn. 5. Spanske svovelkisforekomster. II. Kontorarbeide. |
| ;Norges geologiske undersøkelse;ÅRSMELDING; TIDSSKRIFTARTIKKEL;NGU; No.133;31-38 pages |
| Gjelle, Svein; Mickelson, Marit; Theisen, Fredrik J. , 1996 |
| Fustvatnet. Berggrunnskart; Fustvatnet; 19264; 1:50 000; trykt i farger |
| ;Norges geologiske undersøkelse;KART |
| Abstract: | |
| Beskrivelsen finnes på kartet. |
| 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. |
| Heldal, Tom , 2000 |
| Fra kirkebygging til marmorjakt. Bygningstein på sørlige Helgeland. |
| ;Helgeland Historielag;TIDSSKRIFTARTIKKEL;Årbok for Helgeland;8-18 pages |
| Abstract: | |
| Produksjonen av bygningsstein er ikke det første vi forbinder med Helgeland. Landsdelen kan ikke skryte av en steinindustri som leverer til verdens vakreste byggverk, slik vi ser i Fauske og Larvik. Heller ikke kan vi si at Helgeland kan vise til et tradisjonsrikt og levende steinhuggermiljø, der håndtverk i marmor og granitt fremstilles for det ganske land. Men til tross for landsdelens beskjedne bidrag til norsk steinindustri ser vi en fascinerende historie rundt naturens sterkeste byggemateriale, fra middelalderens kirkebyggere, via 1800-tallets jakt på vakre marmortyper til den nye tids drift og prospektering |
| Lindahl, I.; Furuhaug, L.; Korneliussen, A.; Nilsson, L.P. , 2004 |
| Olivin- og serpentinittforekomster i Finnmark, Troms, Nordland og Nord-Trøndelag. Del 1: Hovedtekst og tabeller. Del 2: Forekomstbeskrivelse. Del 3: Kart og kartutsnitt. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2003.103;3 b. pages |
| Abstract: | |
| Det er gjort en sammenstilling av olivin- og serpentinittforekomster i de fire nordligste fylker i Norge som har et areal på utgående større enn 20.000m2. Til sammen inneholder denne sammenstillingen informasjon om 173 forekomster hvorav 30 i Finnmark, 29 i Troms, 90 i Nordland og 24 i Nord-Trøndelag. Rapporten er framstilt i tre deler: Del 1: Hovedtekst med litteraturreferanser og oversiktstabeller Del 2: Beskrivelse av forekomster Del 3: Fylkesvise oversiktskart og kartutsnitt for de enkelte forekomster. Rapporten er utarbeidet for LKAB med utgangspunkt i offentlig tilgjengelig informasjon. |
| Storemyr, Per , 1997 |
| The stones of Nidaros. An applied weathering study of Europe's northernmost medieval cathedral |
| ;NTNU, institutt for arkitekturhistorie;AVHANDLING;Doktor ingeniøravhandling; No.1997:92;374 s. pages |
| Abstract: | |
| Dr.ing. avhandling |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||
| BJØRNÅ | Dump |
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| 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 |