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Isi Prospect, Bærum (Baerum), Akershus, Norwayi
Regional Level Types
Isi ProspectGroup of Pits (Abandoned)
Bærum (Baerum)Municipality
AkershusCounty
NorwayCountry

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Name in Norwegian:Isi skjerp, Bærum, Akershus, Norge
Latitude & Longitude (WGS84): 59° 56' 28'' North , 10° 26' 36'' East
Latitude & Longitude (decimal): 59.94112,10.44359
GeoHash:G#: u4xkvxuy3
Locality type:Group of Pits (Abandoned) - last checked 2006
Age:298.9 ± 0.15 to 252.17 ± 0.06 Ma
Geologic Time:Permian
Reference for age:Geological Survey of Norway. The Ore database. Isi skjerp. Deposit Area 219 - 010.
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Smestad578 (2012)1.0km
Skui3,487 (2010)1.5km
Billingstad2,349 (2013)7.6km
Sylling525 (2013)10.0km
Lysaker3,439 (2012)11.2km


Small pits for iron-ore (hematite) that was used at the nearby Bærum Verk furnace. The mines exploit mineralized hydrothermal veins belonging to the Bærum rift system and occurring mostly in the porphyries overlying Cambro-Silurian sediments exhibiting contact metamorphic alteration caused by a large plutonic intrusion below the sediments.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
ScandinaviaRegion

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


6 valid minerals.

Detailed Mineral List:

Andradite
Formula: Ca3Fe3+2(SiO4)3
Reference: Goldschmidt, V.M. (1911): Die Kontaktmetamorphose im Kristianiagebiet. Vitenskapsselskapets Skrifter. 1. Mat.Naturv. Klasse. (1911) No 1, Kristiania 1911. 483p. p. 379
'Andradite-Grossular Series'
Reference: V.M. Goldschmidt: "Die Kontaktmetamorphose im Kristianiagebiet". Vitenskapsselskapets Skrifter Mat.Naturv. Klasse (1911) no 1. Kristiania 1911
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Goldschmidt, V.M. (1911): Die Kontaktmetamorphose im Kristianiagebiet. Vitenskapsselskapets Skrifter. 1. Mat.Naturv. Klasse. (1911) No 1, Kristiania 1911. 483p., p.416
Helvine
Formula: Be3Mn2+4(SiO4)3S
Reference: Goldschmidt, V.M. (1911): Die Kontaktmetamorphose im Kristianiagebiet. Vitenskapsselskapets Skrifter. 1. Mat.Naturv. Klasse. (1911) No 1, Kristiania 1911. 483p., p.399
Hematite
Formula: Fe2O3
Reference: Goldschmidt, V.M. (1911): Die Kontaktmetamorphose im Kristianiagebiet. Vitenskapsselskapets Skrifter. 1. Mat.Naturv. Klasse. (1911) No 1, Kristiania 1911. 483p., p.272
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Geological Survey of Norway. The Ore database. Isi skjerp. Deposit Area 219 - 010. (Updated 19. mai. 2006)
Quartz
Formula: SiO2
Reference: V.M. Goldschmidt: "Die Kontaktmetamorphose im Kristianiagebiet". Vitenskapsselskapets Skrifter Mat.Naturv. Klasse (1911) no 1. Kristiania 1911

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 9 - Silicates
Andradite9.AD.25Ca3Fe3+2(SiO4)3
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Helvine9.FB.10Be3Mn2+4(SiO4)3S
Unclassified Minerals, Rocks, etc.
'Andradite-Grossular Series'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework Feldspathoids and related species
Helvine76.2.4.1Be3Mn2+4(SiO4)3S
Unclassified Minerals, Mixtures, etc.
'Andradite-Grossular Series'-

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
BeBeryllium
Be HelvineBe3Mn42+(SiO4)3S
OOxygen
O HematiteFe2O3
O QuartzSiO2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HelvineBe3Mn42+(SiO4)3S
O AndraditeCa3Fe23+(SiO4)3
O MagnetiteFe2+Fe23+O4
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si QuartzSiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si HelvineBe3Mn42+(SiO4)3S
Si AndraditeCa3Fe23+(SiO4)3
SSulfur
S HelvineBe3Mn42+(SiO4)3S
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca AndraditeCa3Fe23+(SiO4)3
MnManganese
Mn HelvineBe3Mn42+(SiO4)3S
FeIron
Fe HematiteFe2O3
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe AndraditeCa3Fe23+(SiO4)3
Fe MagnetiteFe2+Fe23+O4

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 Macrostrat.org

Permian
251.902 - 298.9 Ma



ID: 3187228
Paleozoic volcanic rocks

Age: Phanerozoic (251.902 - 298.9 Ma)

Lithology: Mafic-felsic-intermediate dominated volcanic rocks; trachyte

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]

Permian - Carboniferous
251.902 - 358.9 Ma



ID: 3162650
Carboniferous rhyolite

Age: Phanerozoic (251.902 - 358.9 Ma)

Lithology: Major:{rhyolite}, Minor{basalt,sandstone,conglomerate}

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]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Goldschmidt, V.M. (1911): Die Kontaktmetamorphose im Kristianiagebiet. Vitenskapsselskapets Skrifter. 1. Mat.Naturv. Klasse. (1911) No 1, Kristiania 1911. 483p. [pp. 272, 292, 379, 399, 416]
Geological Survey of Norway. The Ore database. Isi skjerp. Deposit Area 219 - 010. (Updated 19. mai. 2006)


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