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Fostung deposit (Fostung property; St. Leonard Lake Occurrence), Foster Township, Sudbury District, Ontario, Canada

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Latitude & Longitude (WGS84): 46° 13' 51'' North , 81° 38' 30'' West
Latitude & Longitude (decimal): 46.23083,-81.64167
GeoHash:G#: f0jzn0n65
Locality type:Deposit
Köppen climate type:Dfb : Warm-summer humid continental climate


Skarn-type tungsten deposit, discovered in 1981. Located in Foster Twp. (Concession III, Lot 8) approximately 8km SE of Espanola, Ontario. The Fostung property consists of two contiguous mining leases covering 485ha. The mining leases are valid until October 2010 and March 2011 at which time they may be renewed.

This occurrence is the same one called the "St.Leonard Lake Occurrence" described by Ann Sabina in her book.

Modern exploration activity of the Fostung tungsten property began in 1966, when local prospectors Vernon Piispanen and Taisto Tamminen discovered a one-foot wide quartz vein carrying some chalcopyrite and molybdenite shows. They staked five original claims and shortly thereafter, five additional claims. During the next 20 years, the property was explored by five different companies. Texas Gulf first optioned the property from 1966 to 1967. They conducted geological mapping, geophysics and completed six diamond drillholes totaling 825m. Cerro Corporation optioned the property in 1970. They carried out a surface sampling and trenching program and dropped the property shortly thereafter. VanGulf Exploration optioned the property in 1971. They further mapped the property, ran geophysics and drilled two more core holes totaling 734m. In 1972, a number of Vangulf properties, including Fostung, were acquired by St. Joseph Explorations Ltd. St Joseph drilled six core holes totaling 1,411m and did preliminary metallurgical testing on the core rejects. They dropped the property in 1973 after failing to define the desired high-grade mineralization.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Arsenopyrite
Formula: FeAsS
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Chalcopyrite
Formula: CuFeS2
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
'Clinopyroxene Subgroup'
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Fluorite
Formula: CaF2
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Gold
Formula: Au
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Molybdenite
Formula: MoS2
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Pyrrhotite
Formula: Fe7S8
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Scheelite
Formula: Ca(WO4)
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Silver
Formula: Ag
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Sphalerite
Formula: ZnS
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
Wollastonite
Formula: CaSiO3
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
'Silver'1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
'Chalcopyrite'2.CB.10aCuFeS2
'Molybdenite'2.EA.30MoS2
'Pyrrhotite'2.CC.10Fe7S8
'Sphalerite'2.CB.05aZnS
Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Scheelite'7.GA.05Ca(WO4)
Group 9 - Silicates
'Actinolite'9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Tremolite'9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
'Vesuvianite'9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
'Wollastonite'9.DG.05CaSiO3
Unclassified Minerals, Rocks, etc.
'Clinopyroxene Subgroup'-
'Garnet Group'-X3Z2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Molybdenite2.12.10.1MoS2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
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)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Clinopyroxene Subgroup'-
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
OOxygen
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O Garnet GroupX3Z2(SiO4)3
O ScheeliteCa(WO4)
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O WollastoniteCaSiO3
FFluorine
F FluoriteCaF2
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
NaSodium
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
AlAluminium
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si Garnet GroupX3Z2(SiO4)3
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si WollastoniteCaSiO3
SSulfur
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S MolybdeniteMoS2
S PyrrhotiteFe7S8
S SphaleriteZnS
CaCalcium
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca FluoriteCaF2
Ca ScheeliteCa(WO4)
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Ca WollastoniteCaSiO3
FeIron
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe PyrrhotiteFe7S8
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
MoMolybdenum
Mo MolybdeniteMoS2
AgSilver
Ag SilverAg
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu

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

Paleoproterozoic
1600 - 2500 Ma



ID: 609958
Huronian Supergroup (2.2 Ga to 2450 Ma); Quirke Lake Group; Serpent Formation

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Serpent Formation

Comments: Southern and Superior Province

Lithology: Quartz-feldspar sandstone, sandstone with minor siltstone, calcareous siltstone and conglomerate

Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. [1]

Siderian
2300 - 2500 Ma



ID: 3185030
Paleoproterozoic sedimentary rocks

Age: Siderian (2300 - 2500 Ma)

Stratigraphic Name: Cobalt Group

Comments: Southern Province

Lithology: Mudstone

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 Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Sabina, Ann P. (1991) Geological Society of Cananda Miscellaneous Report 49, Rocks and Minerals for the Collector, Sudbury to Winnipeg.
- Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): International Strategic Mineral Issues Summary Report - Tungsten. US Geological Survey Circular 930-O.
- Ontario Department of Mines Map 2311, Merrit & Foster Twps.
- www.goldenpredator.com


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