Citadelløya (Festningsøya), Stavernsøya, Fredriksvern Verft, Stavern (Fredriksvärn), Larvik Commune, Vestfold, Norwayi
| Regional Level Types | |
|---|---|
| Citadelløya (Festningsøya) | Island |
| Stavernsøya | Island |
| Fredriksvern Verft | Naval Base (Historical) |
| Stavern (Fredriksvärn) | Municipality (Former) |
| Larvik Commune | Municipality |
| Vestfold | County |
| Norway | Country |
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Latitude & Longitude (WGS84):
58° 59' 44'' North , 10° 2' 57'' East
Latitude & Longitude (decimal):
Type:
Other/historical names associated with this locality:
Karlsø; Fæstningsöen; Festningsöen
Other Languages:
Norwegian:
Citadelløya, Stavernsøya, Fredriksvern Verft, Stavern, Larvik, Vestfold, Norge
Citadelløya is one of the classical localities in the Larvik plutonic complex in Norway. Several small syenite pegmatite dikes can be observed outside the walls of the fortress from around 1680s. Boulders of pegmatite syenite are also been used in the walls and buildings.
Here mineralogist found, in the beginning of the 19. century specimens of microcline showing a bluish schillerism, the so-called labradorizing feldspar (later named as cryptoperthite), large black amphiboles, zircon etc. These minerals together with several other of the classical Stavern minerals can still be observed today in situ.
Brøgger (1890) used an older name of the island, "Festningsøya" ("the Fortress Island" when translated). The island which was a former military fortress (Stavern (Fredriksvärn) Fort), is today a protected historical site and a recreational, public area.
In 1860 a breakwater was made that connected this island to the larger Stavernsøya.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
3 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Amphibole Supergroup' Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| ⓘ 'Feldspar Group' |
| ⓘ 'Feldspar Group var. Cryptoperthite' |
| ⓘ Microcline Formula: K(AlSi3O8) |
| ⓘ Molybdenite Formula: MoS2 References: Knut Edvard Larsen collection nr MM-7957Identified by Knut Edvard Larsen: Visual Identification |
| ⓘ Zircon Formula: Zr(SiO4) |
| ⓘ 'Zirconolite-3O' Formula: (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Amphibole Supergroup' | - | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Zirconolite-3O' | - | (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
| ⓘ | 'Feldspar Group var. Cryptoperthite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | Oxygen | |
| O | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Zirconolite-3O | (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
| F | Fluorine | |
| F | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Al | Aluminium | |
| Al | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Si | Silicon | |
| Si | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Zircon | Zr(SiO4) |
| S | Sulfur | |
| S | ⓘ Molybdenite | MoS2 |
| Cl | Chlorine | |
| Cl | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| K | Potassium | |
| K | ⓘ Microcline | K(AlSi3O8) |
| Ca | Calcium | |
| Ca | ⓘ Zirconolite-3O | (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
| Ti | Titanium | |
| Ti | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Ti | ⓘ Zirconolite-3O | (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
| Fe | Iron | |
| Fe | ⓘ Zirconolite-3O | (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Zr | ⓘ Zirconolite-3O | (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
| Nb | Niobium | |
| Nb | ⓘ Zirconolite-3O | (Ca,REE)2Zr2(Ti,Nb)3FeO14 |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
Other Regions, Features and Areas containing this locality
Eurasian PlateTectonic Plate
- Baltic Shield
- Sveconorwegian BeltShield
EuropeContinent
Norway
- Oslo Volcanic ProvinceVolcanic Province
- ⭔Vestfold og Telemark (2020-2023)County
ScandinaviaRegion
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Citadelløya, Stavernsøya, Fredriksvern Verft, Stavern, Larvik Commune, Vestfold, Norway