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Norsk versjon | ||||
| THE NATURAL STONE DATABASE | |||||
| Deposit Area 1133 - 607 | |||||
| (Last updated 14.mar.2019) | |||||
Name of Deposit Area : Randa |
| (Object Id : 1133,607,00,00) |
| Location |
| County : | Rogaland (11) | Municipality : | Hjelmeland (1133) |
| Map 1:50000: | Strand (1213-2) | Map 1:250000: | Sauda |
| Marking point: | Longitude: | 6.0097920 | Latitude: | 59.2098560 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 329289 m. | Y-coord: | 6567248 m. |
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| Commodity |
| Main Type: | Slate and schist | Sub Type: | Quartzitic flagstone | |
| Brickstone(Y/N): |
| Production |
| Activity: | Stone quarrying | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Disused, closed | Volume of dump: |
| Importance |
| Public: | Not Assessed (reg. 21.03.2017) |
| Economical: | Could be significant , (Confirmed 15.feb.2005 by Bjørn Lund) |
Products |
| Commercial Name | Product description |
| Classification : | Colour :Grayish | ||
| Play of colours : | Uniformity : | ||
| Lithology : | Grain size : |
Operations |
| From - To | Activity | Comments | |
| 1900 | Regular production | Company/Institution :Olav Vik, Stavanger og Lars Randa |
Deposit rock |
| Lithology: | Quartzrich flagstone | Weathering colour: | ||
| Era: | Period: | |||
| Dating: | Method: | |||
| Genesis: | Sedimentary/metamorphic | Form: | ||
| Main texture: | Schistose |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Not defined | Quartz | Major mineral (>10%) | |
| Not defined | Mica | Major mineral (>10%) | |
| Not defined | Feldspar | Major mineral (>10%) | |
| Not defined | Epidote | Subordinate mineral (1-10%) | |
| Not defined | Carbonate | Accessory mineral (<1%) |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Not defined | Schistosity | Strike/Dip :243 / 25 |
Information(s) in free text format |
| Description |
| På Randøy ved gården Randa ligger 5 brudd langsetter tilnærmelsesvis samme bergartssone. Mektigheten er opp mot 4 m i de østlige bruddene. Spalteegenskapene er svært uregelmessige og skliferen er hard og sprø. Opptreden av folder og oppsprekkinger forekommer hyppig. Forekomsten egner seg kun til drift i liten skala. Dette er et av de østligste bruddene. |
| Photo(s) from the Deposit area: |
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Bibliography: |
| From NGU's Reference Archive: |
| The fact sheet was created on 09.12.2025 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2025 Geological Survey of Norway |