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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 418 - 012 | |||||
| (Last updated 11.jan.2017) | |||||
Name of Deposit Area : Holt |
| (Object Id : 0418,012,00,00) |
| Location |
| County : | Hedmark (04) | Municipality : | Nord-Odal (0418) |
| Map 1:50000: | Odalen (2015-4) | Map 1:250000: | Hamar |
| Marking point: | Longitude: | 11.5248810 | Latitude: | 60.4410950 |
| EU89-UTM Zone 32 |
| X-coord: | 638929 m. | Y-coord: | 6703199 m. |
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| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Au |
| Production |
| Activity: | Test mining | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Disused, closed | Volume of dump: | 10 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 01.feb.2005 by Havard Gautneb) |
Mineralization |
| Era: | Proterozoic | Period: | Paleoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Hydrothermal vein | Form: | Plate | |
| Main texture: | Fracture filling | Min. distribution: | Irregular (scattered) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: | Sericitisation |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Paleoproterozoic |
| Province: | East Norwegian Basement Province | |
| Geotec.unit: | Solør Complex | |
| Tectonic complex: | Mylonite Zone | |
| Igneous complex: |
| Group: | Formation: |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Shear plane | Strike/Dip :140 / 90 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| The Holt prospect is situated on top of a small hill immediately west of an electric power line. It consists of two shallow pits (2 m x 2 m) worked on a system of 3-20 cm wide deformed quartz veins and lenses in mylonitic augen gneisses with crenulated shear foliation. The mineralisation consists erratically distributed aggregates and veinlets of chalcopyrite and subordinate pyrite which form fracture fillings together with calcite in the quartz veins and along their contacts. The mineralisation is controlled by the presence of competent quartz lenses which occur irregularly distributed over an area of 2 m by 10 m. Microscopic examinations reveal the presence of minute grains of native gold in chalcopyrite and quartz partly occurring along microfractures in cataclastic pyrite. |
| The fact sheet was created on 18.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |