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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1702 - 010 | |||||
| (Last updated 15.mai.2006) | |||||
Name of Deposit Area : Tvestad |
| (Object Id : 1702,010,00,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Steinkjer (1702) |
| Map 1:50000: | Steinkjer (1723-3) | Map 1:250000: | Namsos |
| Marking point: | Longitude: | 11.6655290 | Latitude: | 64.0597400 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 630069 m. | Y-coord: | 7106392 m. |
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| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Zinc | |
| Element(s): | Zn Cu |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 1 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest |
Operations |
| From - To | Activity | Comments | |
| 1990 - 1990 | Inspection | Company/Institution :NGU |
Mineralization |
| Era: | Period: | |||
| Dating: | Method: | |||
| Genesis: | Unknown | Form: | ||
| Main texture: | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | Caledonides | |
| Geotec.unit: | Seve Nappe Complex | |
| Tectonic complex: | Skjøtingen Nappe | |
| Igneous complex: |
| Group: | Reinsvass Gp | Formation: | Våttå Fm |
Mineralogy |
| Relationship | Mineral | Amount | |
| Ore mineral | Sphalerite | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TG90108 | Bedrock |
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| TG90167 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1702 - 010 Tvestad |
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# |
| TG90108 | Bedrock | 1388 | 10950 | 2 | 26 | 30 | .8 | 3.0 |
| TG90167 | Bedrock | 1693 | 2614 | 57 | 36 | 24 | .9 | 3.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | Rh# | As* | Cd* | Ba* | Mo* | Sb* | Bi* |
| TG90108 | 1.0 | 2.0 | 2.0 | 12 | 36.9 | 64 | 18.00 | 3 | 2 |
| TG90167 | 1.0 | 2.0 | 2 | 8.7 | 87 | 3.00 | 2 | 6 |
| ------------------ |
| Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* |
| TG90108 | 1.55 | 53 | 78 | 900 | 6.07 | 9.00 | 7.00 | 2 | 16.0 |
| TG90167 | 1.65 | 106 | 35 | 386 | 6.28 | 2.00 | 5.00 | 15 | 5.0 |
| ------------------ |
| Sample No. | La* | B* | |||||||
| TG90108 | 7.00 | 2 | |||||||
| TG90167 | 3.00 | 2 |
| The fact sheet was created on 19.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |