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English version | ||||
| INDUSTRIMINERALDATABASEN | |||||
| Forekomstområde 1833 - 330 | |||||
| (Sist oppdatert 07.des.2015) | |||||
Navn på deposit area : Store Esjeklumpen |
| (Objekt Id : 1833,330,00,00) |
| Lokalisering |
| Fylke : | Nordland (18) | Kommune : | Rana (1833) |
| Kart 1:50000: | Mo i Rana (1927-1) | Kart 1:250000: | Mo i Rana |
| Markeringspunkt: | Lengdegrad: | 13.8994170 | Breddegrad: | 66.3300560 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-koord: | 450696 m. | Y-koord: | 7357133 m. |
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| Materialtype |
| Hovedtype: | Talk | Subtype: | Talk (Kleberstein) |
| Production |
| Activity: | Prøvedrift | Reserves: | 1040 thousand tons | |
| Prod. method: | Dag- og underjordsdrift | Production: | ||
| Prod. status: | Volume of dump: |
| Betydning |
| Offentlig: | National Importance (reg. 20.02.2015) |
| Economical: | Meget viktig , (Confirmed 08.mai.2006 by Rolf Lynum) |
Products |
| Element/product | Crude ore grade or quality | |
| SOA/TA | % |
Operations |
| From - To | Activity | Comments | |
| 1990 - 1992 | Core drilling | Company/Institution :Norwegian Talc | |
| 1990 - 1993 | Geology | Company/Institution :Norwegian Talc, NTH | |
| 1991 - 1991 | Geophysics | Company/Institution :NGU |
Mineralization |
| Era: | Paleozoic | Period: | Silurian | |
| Dating: | Method: | |||
| Genesis: | Metasomatisk | Form: | Linse | |
| Main texture: | Strukturløs | Min. distribution: | Massiv |
| Main grain size: | Middelskornet (1-3 mm) |
| Strike/Dip: | 45 / 45 | Direction: | 45 | |
| Plunge: | 45 |
| Stratigraphic classification of host rock |
| Era: | Paleozoic | Period: | Silurian |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | Rødingsfjelldekkekom | |
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Not defined | Talc | Major mineral (>10%) | |
| Not defined | Magnesite | Major mineral (>10%) | |
| Not defined | Magnetite | Accessory mineral (<1%) | |
| Not defined | Chlorite | Accessory mineral (<1%) |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Foliation | Strike/Dip :60 / 45 | Syn-mineralisation ;...Effect :Modifies |
Opplysning(er) i fritekstformat |
| Fri tekst |
| Diplomoppgave, NTH av Holter fra 1990. Omfattende prospektering med kjerneboring i 1990-1992. Kvaliteten på talken er antatt tilsvarende som Altermark-talk. |
Bibliography: |
| From NGU's Reference Archive: |
| Søvegjarto, U.; Marker, M.; Graversen, O. , 1988 |
| Mo i Rana. Berggrunnskart; Mo i Rana; 19271; 1:50 000; trykt i farger; |
| ;Norges geologiske undersøkelse;KART |
| Karlsen, Tor Arne ; Rian, Edvin ; Olesen, Odleiv , 2000 |
| Overwiew of talc resources in the Altermark talc province, northern Norway, and possible uses of the talc ore |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.436;93-102 pages |
| Abstract: | |
| Active prospecting during the past 10 years has proved that the Altermark area contains much more talc than previously recognised in the Nakkan-Esjeklumpen area, 10 M tonnes or more of talc-carbonate ore are probably present, distributed in ultramafic bodies. The ore, which occurs as one of several layers within compositionally zoned ultramafic lenses dominated by antigorite serpentinites, has the following general mineralogy; talc (45-65%), carbonate (30-50%), chlorite (0-4%) and magnetite (0-3%). Relative to other known similar deposits, the ore is rather coarse-grained, and the minerals tend to be idio- blastic. Several products can be made from the talc-carbonate ore. By applying flotation or other kinds of mineral separation techniques, it is likely that high-quality talc-concentrate could be made in addition to calc-carbonate mixtures. a concentrate of by-product breunnerite would possibly be of ecomonic value. |
| Faktaarket ble generert 13.06.2026 |
| Spørsmål eller kommentarer vedrørende faktaarket kan mailes til: ressursdatabaser@ngu.no |
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