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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1573 - 001 | |||||
| (Last updated 15.apr.2024) | |||||
Name of Deposit Area : Nausthaugen |
| (Object Id : 1573,001,00,00) |
| Location |
| County : | Møre og Romsdal (15) | Municipality : | Smøla (1573) |
| Map 1:50000: | Smøla (1321-1) | Map 1:250000: | Kristiansund |
| Marking point: | Longitude: | 7.9592190 | Latitude: | 63.3568650 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 447928 m. | Y-coord: | 7025773 m. |
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| Commodity |
| Main Type: | Ferrous metals(Fe, Mn, Ti) | Sub Type: | Iron | |
| Element(s): | Fe Kis |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 20 m3 |
| Importance |
| Public: | Not Assessed (reg. 18.02.2015) |
| Economical: | Not classified/evaluated , (Confirmed 16.feb.2005 by Agnes Raaness) |
Mineralization |
| Era: | Paleozoic | Period: | Ordovician | |
| Dating: | Method: | |||
| Genesis: | Replacement/Metasomatism | Form: | Irregular | |
| Main texture: | Structureless | Min. distribution: | Irregular (scattered) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: | Skarn formation |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Paleozoic | Period: | Ordovician |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: | Skjølberg formasjonen |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Epidote | Major mineral (>10%) | |
| Gangue mineral | Pyroxene | Major mineral (>10%) | |
| Gangue mineral | Garnet | Subordinate mineral (1-10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | granat+epidot skarn | Sedimentary Original rock :Limestone |
|
| Metamorphic facies :Contact | |||
| Wall rock | felsisk gang | Intrusive | |
| Wall rock | granodioritt | Intrusive Original rock :Granodiorite |
Information(s) in free text format |
| Free text |
| Skjerpet ligger på nordsida av Nausthaugen i et område med myr og små knauser. Skjerpet består av en vannfyllt synk som er 4x7 m med lengst akse øst-vest i et overdekket område. Mineraliseringen opptrer på grensen mellom lys granodioritt med mørke fragmenter i sør og granatskarn i nord. En 1/2 m bred brunfarget sone er observert i vestveggen. Felsiske ganger finnes i østverggen. Finkornet magnetitt-malm, dels sammen med epidot-pyrksen skarn dominerer i utskeidet del av tippen. Få blokker med svak sulfid-mineralisering i årenettverk i granatskarn finnes i tillegg. |
Bibliography: |
| From NGU's Reference Archive: |
| Gautneb, Håvard; Roberts, David , 1989 |
| Geology and petrochemistry of the Smøla-Hitra Batholith, Central Norway. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.416;1-24 pages |
| Abstract: | |
| The plutonic rocks which compose the Smøla-Hitra Batholith (SHB) cover an exposed area of c.1000 km² and intrude folded, Arenig-Llanvirn, low-grade meta-sedimentary and bimodal metavolcanic rocks and higher-grade polydeformed gneisses of probable Proterozoic age. The SHB is unconformably overlain by Old Red Sandstone sediments of possible Late Silurian to definite Middle Devonian age. Field relations demonstrate that the oldest rock-types in the batholith comprise gabbro, monzodiorite and hornblende diorite. These are succeeded by tonalite, granodiorite and granite, which occur both as plutons and as abundant dykes and veins. Later members of the SHB include composite dykes, porphyritic microdiorite, appinitic pipe-like bodies, dolerite dykes and lastly, granophyre dykes. The hypabyssal rocks post-date a phase of weak, heterogeneous deformation manifested locally within the various plutons. Pressure estimates from hornblende compositions indicate a pressure of solidification of 0.26 +-0.1 GPa, corresponding to a depth of about 9 km. Preliminary isotopic dating has indicated an age range from c. 450 to c. 428 MA; latest Mid-Ordovician to Early Silurian. The rocks of the SHB show little sign of the Scandian deformation and metamorphism which are so common elsewhere in this part of Norway. |
| Aasgaard, Gunnar , 1951 |
| Malmforekomster på Smøla. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 4449;3 pages |
| Abstract: | |
| Rapporten beskriver en 3-dagers befaring av Maurdal-Nøsthaugen- og Strømmen gruver på Smøla. Mineraliseringen forekommer i hovedsak som magnetitt med noe svovel- og kobberkis. SP-målinger ved Maurdals gruver indikerer at det gjennstår malm på dypet. |
| Aasgaard, Gunnar , 1951 |
| Malmforekomster på Smøla. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1690;3 pages |
| Abstract: | |
| Rapporten beskriver befaringer av malmforekomster på Smøla. Det blir konkludert med ønske om videre undersøkelser. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| MR0068.01 | Dump |
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| MR0068.02 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1573 - 001 Nausthaugen |
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# |
| MR0068.01 | Dump | 4465 | 488 | 42 | 43 | 14 | 3.9 | 158.0 |
| MR0068.02 | Dump | 5672 | 266 | 40 | 51 | 26 | 5.9 | 194.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
| MR0068.01 | -5.0 | 2.0 | -5 | -1.0 | -2 | 6.00 | -20 | -5 | -5 |
| MR0068.02 | -5.0 | 4.0 | -5 | -1.0 | -2 | 5.00 | -20 | -5 | -5 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | W* | Sr* | La* | Na* | Mg* |
| MR0068.01 | 41 | 298 | 1074 | 10.00 | -20 | 3.0 | -1.00 | -0 | 0 |
| MR0068.02 | 37 | 275 | 1304 | 10.00 | -20 | 3.0 | -1.00 | -0 | 0 |
| ------------------ |
| Sample No. | Al* | K * | Ca* | Te* | |||||
| MR0068.01 | 1 | -0 | 2 | -10.00 | |||||
| MR0068.02 | 1 | -0 | 2 | -10.00 |
| The fact sheet was created on 12.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |