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Espenes Iron-Phosphorus Deposit, Dyrøy, Troms og Finnmark, Norwayi
Regional Level Types
Espenes Iron-Phosphorus DepositDeposit (Possible Future Operation)
DyrøyMunicipality
Troms og FinnmarkCounty
NorwayCountry

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Latitude & Longitude (WGS84):
69° 5' 44'' North , 17° 48' 25'' East
Latitude & Longitude (decimal):
Type:
Deposit (Possible Future Operation) - last checked 2026
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Finnsnes3,907 (2010)16.4km
Sjøvegan723 (2014)24.7km
Gibostad377 (2017)30.7km
Tennevollen250 (2013)38.8km
Mindat Locality ID:
478192
Long-form identifier:
mindat:1:2:478192:2
GUID (UUID V4):
0


An iron deposit first described early 20th century.

1907 - 1912 Exploration
1911 - 1911 Exploration
1918 - 1918 Exploration by Vogt & Vogt
1939 - 1939 Diamond core drilling by A/S Sydvaranger
1995 - 1995 Exploration by NGU.

From the NGU report:

Early claims in the Sørreisa field were registered in 1903, followed by exploration and development work between 1907 and 1912 involving 10–25 workers. Parts of the Espenes deposit were surveyed using magnetometer measurements in 1911, and geological investigations with sampling were carried out in 1918. In 1939, A/S Sydvaranger conducted diamond drilling with eight boreholes.

The ore body extends over approximately 6–7 km, from Espenes farm via Hompene to south of Børingsvatn, and continues a few kilometers further toward Bjørga. It is exposed in trenches spaced roughly 100–200 meters apart. Blasting across the full thickness has been conducted at several locations. The average thickness is about 20 m, with iron contents reported at 25–30% acid-soluble Fe in early reports.

Drilling north of Børingsvatn in 1939 indicated ore thicknesses between 10 and 52 m (average ~25 m), with grades of about 23% total Fe, 16% magnetic Fe, and 0.8% phosphorus. The drilled section covers roughly 900 m in length and about 22,000 m² in cross-sectional area.

The iron ore occurs just beneath a persistent calcite marble horizon within quartz–amphibole–biotite schist. The mineralization is medium- to fine-grained, banded, and partly quartz-banded, with interlayers of barren schist up to several meters thick. Magnetite is the dominant iron oxide, while hematite is rare and observed only at one occurrence. Pyrite appears as an accessory mineral.

The NGU Ore Database lists 29 prospects and additionally some places that were sampled. In the vicinity of the coordinates several prospects can be seen at the LiDAR map.

Phosphorus is mentioned as a possible resource, together with the iron.

An article in newspaper Folkebladet.no (Pay wall) of 24 June 2026 reports about renewed interest for this deposit.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


6 valid minerals.

Detailed Mineral List:

'Amphibole Supergroup'
Formula: AB2C5(T8O22)W2
'Apatite'
Formula: Ca5(PO4)3A
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Calcite
Formula: CaCO3
Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
'Feldspar Group'
'Garnet Group'
Formula: X3Z2(SiO4)3
Hematite
Formula: Fe2O3
Magnetite
Formula: Fe2+Fe3+2O4
Pyrite
Formula: FeS2
Quartz
Formula: SiO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Unclassified
'Amphibole Supergroup'-AB2C5(T8O22)W2
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
'Apatite'-Ca5(PO4)3A

List of minerals for each chemical element

HHydrogen
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
CCarbon
C CalciteCaCO3
OOxygen
O Amphibole SupergroupAB2C5(T8O22)W2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O CalciteCaCO3
O Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
O HematiteFe2O3
O MagnetiteFe2+Fe23+O4
O QuartzSiO2
O Garnet GroupX3Z2(SiO4)3
O ApatiteCa5(PO4)3A
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiSilicon
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Si QuartzSiO2
Si Garnet GroupX3Z2(SiO4)3
PPhosphorus
P ApatiteCa5(PO4)3A
SSulfur
S PyriteFeS2
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CaCalcium
Ca CalciteCaCO3
Ca Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Ca ApatiteCa5(PO4)3A
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2

Other Databases

Link to Geological Survey of Norway:1413

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Norway

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