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Åsrumvannet, Hedrum, Larvik, Vestfold, Norwayi
Regional Level Types
HedrumMunicipality (Former)

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Name in Norwegian:Åsrummvannet, Hedrum, Larvik, Vestfold, Norge
Latitude & Longitude (WGS84): 59° 9' 39'' North , 10° 3' 16'' East
Latitude & Longitude (decimal): 59.16102,10.05464
GeoHash:G#: u4x0scctf
Locality type:Lake
Age:0.01143 to 0.0002 Ma
Geologic Time:Holocene
Reference for age:Rosenquvist, I. (1970) Formation of vivianite in holocene clay sediments. Lithos 3 (4): 327-334
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
Kvelde854 (2018)6.0km
Sandefjord42,654 (2017)9.8km
Larvik23,113 (2018)12.0km
Stokke2,618 (2017)15.6km
Langangen505 (2014)16.4km

Quaternary (post-glacial,holocene) sediments in the upper part of of a four meter thick sediment sequence at the lake Åsrumsvannet (Lake Åsrum) in Hedrum i Larvik kommune in the southeastern part of Norway. The formation of vivianite in holocene clay sediments.
The coordinates are for the lake.

Regions containing this locality

Eurasian PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

1 valid mineral.

Detailed Mineral List:

Formula: Fe2+3(PO4)2 · 8H2O
Description: Vivianite occure as nodules in the lake-sediments, the weight of these nodules can be up to 0,5g.
Reference: Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter 68, 278 pp (p. 125)

List of minerals arranged by Strunz 10th Edition classification

Group 8 - Phosphates, Arsenates and Vanadates
Vivianite8.CE.40Fe2+3(PO4)2 · 8H2O

List of minerals arranged by Dana 8th Edition classification

Vivianite40.3.6.1Fe2+3(PO4)2 · 8H2O

List of minerals for each chemical element

H VivianiteFe32+(PO4)2 · 8H2O
O VivianiteFe32+(PO4)2 · 8H2O
P VivianiteFe32+(PO4)2 · 8H2O
Fe VivianiteFe32+(PO4)2 · 8H2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Permian - Carboniferous
251.902 - 358.9 Ma

ID: 3143423
Carboniferous granite

Age: Phanerozoic (251.902 - 358.9 Ma)

Lithology: Major:{granite group}, Minor{monzonite,syenite,plutonic ultramafic group}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

251.902 - 298.9 Ma

ID: 3191892
Paleozoic intrusive rocks

Age: Phanerozoic (251.902 - 298.9 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Rosenquvist, I. (1970) Formation of vivianite in holocene clay sediments. Lithos 3 (4): 327-334
Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter 68, 278 pp [p.125]

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