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|
Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1573 - 006 | |||||
| (Last updated 04.mai.2021) | |||||
Name of Deposit Area : Sletringen |
| (Object Id : 1573,006,00,00) |
| Location |
| County : | Møre og Romsdal (15) | Municipality : | Smøla (1573) |
| Map 1:50000: | Smøla (1321-1) | Map 1:250000: | Kristiansund |
| Marking point: | Longitude: | 7.9254570 | Latitude: | 63.4045480 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 446328 m. | Y-coord: | 7031114 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: | 30 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 16.feb.2005 by Agnes Raaness) |
Mineralization |
| Era: | Paleozoic | Period: | Ordovician | |
| Dating: | Method: | |||
| Genesis: | Replacement/Metasomatism | Form: | Irregular | |
| Main texture: | Structureless | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| 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: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Epidote | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
| Gangue mineral | Garnet | Subordinate mineral (1-10%) | |
| Gangue mineral | Pyroxene | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>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 | epidot+granat skarn | Sedimentary Original rock :Limestone |
|
| Metamorphic facies :Contact | |||
| Wall rock | dioritt | Intrusive Original rock :Diorite |
|
| Metamorphic facies :Greenschist | |||
| Wall rock | grønnstein | Extrusive Original rock :Basalt |
|
| Metamorphic facies :Greenschist |
Information(s) in free text format |
| Free text |
| Mindre røskingsarbeider er gjort i mindre knauser i myra 1600 m vest for Holsvatnet. I hoveskjerpet er det sprengt ut en 15 m lang (NNV-SSØ) og 1-4 m bred røsk med en 2 m høy vegg i vest. I vest finnes 3-4 m bred epidot+granat skarn som blir mørkere grønn (amfibol/pyroksen) mere sulfidrik mot malmsona. Malmsonen er opptil 4 m bred i sør og kiler ut mot nord. Den består av en sentral magnetitt rik sone (få dm bred) med litt grønn skarn omgitt av mere massiv magnetkis med varierende mengde kobberkis som gjerne finnes rundt kvartsøyne. Varierende mengde svovelkis finnes i begge malmtyper. Dels kraftig foliert hornblendedioritt finnes 30 m lengre øst. |
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. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| MR0080.02 | Dump |
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| MR0080.03 | Bedrock |
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| MR0080.04 | Bedrock |
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| MR0080.05 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Skjerp 1 |
| (Object Id : 1573,006,01,00) |
| Location |
| County : | Møre og Romsdal (15) | Municipality : | Smøla (1573) |
| Map 1:50000: | Smøla (1321-1) | Map 1:250000: | Kristiansund |
| Marking point: | Longitude: | 7.9252700 | Latitude: | 63.4041870 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 446318 m. | Y-coord: | 7031074 m. |
|
|
| 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: |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| MR0080.01 | Dump |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1573 - 006 Sletringen |
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# |
| MR0080.01 | Dump | 381 | 72 | 56 | 41 | 4 | 1.1 | 12.0 |
| MR0080.02 | Dump | 2746 | 62 | 47 | 617 | 58 | .7 | 2.0 |
| MR0080.03 | Bedrock | 8 | 65 | 53 | 25 | -1 | -.2 | -1.0 |
| MR0080.04 | Bedrock | 578 | 22 | 8 | 43 | 7 | -.2 | -1.0 |
| MR0080.05 | Bedrock | 220 | 27 | 23 | 35 | 4 | .3 | 1.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
| MR0080.01 | -5.0 | -1.0 | 529 | -1.0 | 30 | 5.00 | -20 | -5 | 17 |
| MR0080.02 | -5.0 | 2.0 | -5 | -1.0 | 3 | 5.00 | -20 | -5 | -5 |
| MR0080.03 | -5.0 | -1.0 | -5 | -1.0 | 6 | 5.00 | -20 | -5 | 25 |
| MR0080.04 | -5.0 | -1.0 | -5 | -1.0 | 22 | 3.00 | -20 | -5 | -5 |
| MR0080.05 | -5.0 | -1.0 | -5 | -1.0 | 5 | 3.00 | -20 | -5 | -5 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | W* | Sr* | La* | Na* | Mg* |
| MR0080.01 | 45 | 167 | 183 | 10.00 | -20 | 3.0 | -1.00 | 0 | 0 |
| MR0080.02 | 12 | 215 | 213 | 10.00 | -20 | 5.0 | -1.00 | 0 | 0 |
| MR0080.03 | 25 | 266 | 629 | 10.00 | -20 | 6.0 | -1.00 | 0 | 0 |
| MR0080.04 | 7 | 263 | 181 | 2.84 | -20 | 40.0 | 6.00 | 0 | 0 |
| MR0080.05 | 18 | 150 | 266 | 3.98 | -20 | 19.0 | 13.00 | 0 | 1 |
| ------------------ |
| Sample No. | Al* | K * | Ca* | Te* | |||||
| MR0080.01 | 0 | 0 | 0 | -10.00 | |||||
| MR0080.02 | 1 | 0 | 0 | -10.00 | |||||
| MR0080.03 | 0 | -0 | 0 | -10.00 | |||||
| MR0080.04 | 1 | 0 | 1 | -10.00 | |||||
| MR0080.05 | 1 | 0 | 2 | -10.00 |
| The fact sheet was created on 05.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |