(Last updated: 14.04.2020)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 5056 - 010 Hofstadmyra | |||||
| (Object Id: 4505) (Last updated: 14.04.2020) |
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| Location |
| County: | Trøndelag | Municipality: | Hitra (5056) |
| Map 1:50000: | Sør-Frøya (1422-3) | Map 1:250000: | Kristiansund |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 483633 m. | North: | 7049628 m. |
| Longitude: | 8.6704030 | Latitude: | 63.5743650 |
| Show on map |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe Kis |
| Importance |
| Raw material meaning: | Not Assessed (reg. 18.02.2015) |
| Resources and production |
| Activity: | Pitting | Reserves: | ||
| Operating method: | Historical production: |
Mineralization |
| Era: | Paleozoic | Period: | Ordovician | |
| Genesis: | Volcex | Form: | ||
| Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| 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 | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Pyroxene | Subordinate mineral (1-10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Pyrite | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Wall rock | hornblendegneis | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Information(s) in free text format |
| Free text |
| Mindre (3x4 m), men relativt dyp vannfyllt synk nær et veikryss. Liknende mineralisering som Skipnesskaget, men lite informasjon fra dette skjerpet. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| ST0305.01 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 5056 - 010 Hofstadmyra |
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# |
| ST0305.01 | Dump | 712 | 55 | 10 | 156 | 37 | -.2 | 2.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
| ST0305.01 | -5.0 | -1.0 | 35 | -1.0 | 5 | 3.00 | -20 | -5 | 10 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | W* | Sr* | La* | Na* | Mg* |
| ST0305.01 | 116 | 136 | 404 | 10.00 | -20 | 63.0 | 39.00 | 0 | 0 |
| ------------------ |
| Sample No. | Al* | K * | Ca* | Te* | |||||
| ST0305.01 | 1 | 0 | 1 | -10.00 |
| The fact sheet was created on 09.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |