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Dalen-Kjørholt Mine, Brevik, Porsgrunn, Telemark, Norwayi
| Regional Level Types | |
|---|---|
| Dalen-Kjørholt Mine | Mine |
| Brevik | Town |
| Porsgrunn | Municipality |
| Telemark | County |
| Norway | Country |
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Latitude & Longitude (WGS84):
59° 3' 48'' North , 9° 41' 2'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Fensfeltet Geologiforening | Ulefoss | 32km |
Other/historical names associated with this locality:
Dalen Portland; Norcem Brevik; Kjørholt gruve
Other Languages:
Norwegian:
Dalen-Kjørholt gruve, Brevik, Porsgrunn, Telemark, Norge
Huge underground limestone mine famous for excellent calcite crystals with an astonishing variety of habits (including various types of twin laws). The calcite crystals occur in voids (crystal caves) that can reach up to about 40 m in length and that can be walked or crawled through.
Previously there were two mines, the Dalen mine and the closely neighbouring Kjørholt mine; the latter was later bought by the first one. The mine presently (2009) has reached a depth of about 300 m.
An excellent selection of minerals from this mine is exhibited at the Norsk Bergverksmuseum in Kongsberg.(2024: transfered to the Natural History Museum in Oslo).
Previously there were two mines, the Dalen mine and the closely neighbouring Kjørholt mine; the latter was later bought by the first one. The mine presently (2009) has reached a depth of about 300 m.
An excellent selection of minerals from this mine is exhibited at the Norsk Bergverksmuseum in Kongsberg.(2024: transfered to the Natural History Museum in Oslo).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
12 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Analcime Formula: Na(AlSi2O6) · H2O |
| ⓘ 'Apophyllite Group' Formula: AB4[Si8O20]X · 8H2O |
| ⓘ Baryte Formula: BaSO4 |
| ✪ Calcite Formula: CaCO3 |
| ⓘ 'Chlorite Group' |
| ⓘ Fluorapophyllite-(K) Formula: KCa4(Si8O20)(F,OH) · 8H2O |
| ⓘ Fluorite Formula: CaF2 |
| ⓘ Laumontite Formula: CaAl2Si4O12 · 4H2O |
| ⓘ Manganite Formula: Mn3+O(OH) Description: Identified at the x-ray laboratory of Mineralogical Museum of Oslo, 1976. |
| ⓘ Marcasite Formula: FeS2 |
| ⓘ Palygorskite Formula: ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | Manganite | 4.FD.15 | Mn3+O(OH) |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| Group 9 - Silicates | |||
| ⓘ | Fluorapophyllite-(K) | 9.EA.15 | KCa4(Si8O20)(F,OH) · 8H2O |
| ⓘ | Palygorskite | 9.EE.20 | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| ⓘ | Analcime | 9.GB.05 | Na(AlSi2O6) · H2O |
| ⓘ | Laumontite | 9.GB.10 | CaAl2Si4O12 · 4H2O |
| Unclassified | |||
| ⓘ | 'Apophyllite Group' | - | AB4[Si8O20]X · 8H2O |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] · nH2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Analcime | Na(AlSi2O6) · H2O |
| H | ⓘ Apophyllite Group | AB4[Si8O20]X · 8H2O |
| H | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| H | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| H | ⓘ Manganite | Mn3+O(OH) |
| H | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| H | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Analcime | Na(AlSi2O6) · H2O |
| O | ⓘ Apophyllite Group | AB4[Si8O20]X · 8H2O |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| O | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| O | ⓘ Manganite | Mn3+O(OH) |
| O | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| F | Fluorine | |
| F | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| F | ⓘ Fluorite | CaF2 |
| Na | Sodium | |
| Na | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Mg | Magnesium | |
| Mg | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Al | Aluminium | |
| Al | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Al | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Al | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Al | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Si | Silicon | |
| Si | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Si | ⓘ Apophyllite Group | AB4[Si8O20]X · 8H2O |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| Si | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Si | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| K | Potassium | |
| K | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Mn | Manganese | |
| Mn | ⓘ Manganite | Mn3+O(OH) |
| Fe | Iron | |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
Other Databases
| Link to Geological Survey of Norway: | 8476 |
|---|
Other Regions, Features and Areas containing this locality
Eurasian PlateTectonic Plate
- Baltic Shield
- Sveconorwegian BeltShield
EuropeContinent
Norway
ScandinaviaRegion
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References
Nordrum, Fred Steinar (1993) Dalen-Kjørholt gruve, in Telemark I. STEIN. Nordisk magasin for populær geologi, 20 (2) 98-99
Nordrum, Fred Steinar (1993) De siste års mineralfunn i Dalen-Kjørholt gruve, in Telemark I. STEIN. Nordisk magasin for populær geologi, 20 (2) 100-110
Nordrum, Fred Steinar (2000) Nyfunn av mineraler i Norge 1999-2000. Norsk Bergverksmuseum Skrift, 17. 59-63
Nordrum, Fred Steinar (2001) Noen funn av mineraler i Norge 2000-2001, del 1. STEIN. Nordisk magasin for populær geologi, 28 (2) 13-19
Nordrum, Fred Steinar (2002) Nyfunn av mineraler i Norge 2001-2002. STEIN. Nordisk magasin for populær geologi, 29 (2) 4-10
Nordrum, Fred Steinar (2004) Nyfunn av mineraler i Norge 2003-2004. STEIN. Nordisk magasin for populær geologi, 31 (2) 36-44
Nordrum, Fred Steinar (2005) Nyfunn av mineraler i Norge 2004-2005 [New finds of minerals in Norway 2004-2005]. Norsk Bergverksmuseum Skrift, 30. 117-124
Nordrum, Fred Steinar (2007) Nyfunn av mineraler i Norge 2006-2007. STEIN. Nordisk magasin for populær geologi, 34 (2) 14-26
Nordrum, Fred Steinar (2008) Nyfunn av mineraler i Norge 2007-2008. STEIN. Magasin for populærgeologi, 35 (2) 8-20
Nordrum, Fred Steinar (2008) Dalen- Kjørholt kalksteinsgruve store drusefunn 2007-2008. STEIN. Magasin for populærgeologi, 35 (3) 8-15
Nordrum, Fred Steinar (2011) Noen nyfunn av mineraler i Norge 2010-2011. STEIN. Magasin for populærgeologi, 38 (2) 14-23
Dalen-Kjørholt Mine, Brevik, Porsgrunn, Telemark, Norway