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Norsk versjon | ||||
| THE NATURAL STONE DATABASE | |||||
| Deposit Area 919 - 606 | |||||
| (Last updated 08.jul.2021) | |||||
Name of Deposit Area : Mjåvatn II |
| (Object Id : 0919,606,00,00) |
| Location |
| County : | Aust-Agder (09) | Municipality : | Froland (0919) |
| Map 1:50000: | Arendal (1611-4) | Map 1:250000: | Arendal |
| Marking point: | Longitude: | 8.4597670 | Latitude: | 58.5281620 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 468539 m. | Y-coord: | 6487641 m. |
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| Commodity |
| Main Type: | Sandstone and conglomerate | Sub Type: | Quartzite | |
| Brickstone(Y/N): | Y |
| Production |
| Activity: | Stone quarrying | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Volume of dump: |
| Importance |
| Public: | Not Assessed (reg. 21.03.2017) |
| Economical: | Could be significant , (Confirmed 04.des.2007 by Bjørn Lund) |
| Historical: | No , (Confirmed 20.nov.2009 by Leif Furuhaug) |
Products |
| Commercial Name | Product description |
| Murestein/heller | Classification :Dry-wall stone | Colour :Grayish | |
| Play of colours : | Uniformity :Medium good | ||
| Lithology :Quartzrich flagstone | Grain size :Medium grained (1-3 mm) |
Mineralogy: |
| Feldspar | Major mineral (>10%) | ||
| Quartz | Major mineral (>10%) | ||
| Mica | Subordinate mineral (1-10%) |
Deposit rock |
| Lithology: | Quartzrich flagstone | Weathering colour: | ||
| Era: | Proterozoic | Period: | ||
| Dating: | Method: | |||
| Genesis: | Sedimentary/metamorphic | Form: | Layer | |
| Main texture: | Foliated |
| Main grain size: | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: |
| Province: | South Norwegian Basement Province | |
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Not defined | Quartz | Major mineral (>10%) | |
| Not defined | Feldspar | Major mineral (>10%) | |
| Not defined | Mica | Subordinate mineral (1-10%) |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Not defined | Schistosity | Strike/Dip :20 / 85 |
Information(s) in free text format |
| Description |
| Geologisk er forekomsten ganske lik Mjåvatn I: Muresteinsproduksjon av en spaltbar, steiltstående lys beige sandstein. Hovedbruddet ligger tett inntil bebyggelse som nok vil være til hinder for videre drift. Bruddet er lite, og med begrensede muligheter for utvidelse. |
| Location |
| Bruddet ligger på begge sider av veien mellom Øynaheia/Herefoss og Mjåvatn, ca 2 km fra krysset med RV 42. |
| Photo(s) from the Deposit area: |
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| The fact sheet was created on 16.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |