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Norsk versjon | ||||
| THE NATURAL STONE DATABASE | |||||
| Deposit Area 1617 - 603 | |||||
| (Last updated 15.apr.2021) | |||||
Name of Deposit Area : Hernes |
| (Object Id : 1617,603,00,00) |
| Location |
| County : | Sør-Trøndelag (16) | Municipality : | Hitra (1617) |
| Map 1:50000: | Skardsøy (1421-4) | Map 1:250000: | Kristiansund |
| Marking point: | Longitude: | 8.3272600 | Latitude: | 63.4995090 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 466508 m. | Y-coord: | 7041420 m. |
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| Commodity |
| Main Type: | Granite and other igneous rocks | Sub Type: | Tonalite | |
| Brickstone(Y/N): |
| Production |
| Activity: | Stone quarrying | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Disused, closed | Volume of dump: |
| Importance |
| Public: | (No data) |
| Economical: | Not classified/evaluated |
Products |
| Commercial Name | Product description |
| Hitragranitt | Classification :Massive blocks | Colour :Light gray | |
| Play of colours : | Uniformity :Good | ||
| Lithology :Tonalite | Grain size :Medium grained (1-3 mm) |
Mineralogy: |
| Plagioclase | Major mineral (>10%) | ||
| Quartz | Major mineral (>10%) | ||
| Muscovite | Subordinate mineral (1-10%) | ||
| Chlorite | Subordinate mineral (1-10%) | ||
| Biotite | Subordinate mineral (1-10%) | ||
| Epidote | Subordinate mineral (1-10%) |
|
Operations |
| From - To | Activity | Comments | |
| 1977 - 1978 | Regular production | ||
| 1990 - 1990 | Test mining |
Deposit rock |
| Lithology: | Weathering colour: | |||
| Era: | Period: | |||
| Dating: | Method: | |||
| Genesis: | Form: | |||
| Main texture: |
| Main grain size: | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Description |
| Homogen forekomst av lys grå tonalitt (trondhjemitt). Det var kortvarig drift på 1970-tallet, samt en ny prøvedrift, trolig rundt 1990. Tonalitten er særlig homogen og massiv fra bruddet og sørvestover langs en åsrygg. Det antas at det er mulig å oppnå høy andel store blokker med lav vrakprosent i forekomsten. Tonalitten inneholder biotitt, det vil si at moderat rustfarging kan forekomme etter tids utendørs bruk. |
| Location |
| Forekomsten kan nås via skogsvei som går nordover fra vegen mellom Hernes og Hummelvika. |
| Photo(s) from the Deposit area: |
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| 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 |