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Bentley Lake occurrence (Madawaska mine property), Faraday Township, Hastings County, Ontario, Canadai
Regional Level Types
Bentley Lake occurrence (Madawaska mine property)Occurrence
Faraday TownshipTownship
Hastings CountyCounty
OntarioProvince
CanadaCountry

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Key
Latitude & Longitude (WGS84):
45° 1' 39'' North , 77° 55' 5'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Bancroft3,838 (2008)5.8km
Other/historical names associated with this locality:
Bentley Lake occurrence (Faraday mine property)


The occurrence was originally staked as a uranium prospect by A.H. Shore of Bancroft in 1949.

Access Description:

Hwy 28 to Siddon Lake road, park past the end of the road (past lot 101) and walk N 250 m to a trench on the S slope of a steep hill. A large face of calcite contains ilmenite crystals.

Magnetite # 1: 60 ft N-NW of cottage road as it traverses 'pt 98' of lots 14-15, con A. A trench, 30 x 2-5 ft deep and 3-4 ft wide is on the N. Pappas property - no collectors allowed.

Magnetite # 2: On the S-facing slope, immediately below a bluff, about 100 ft into lot 15 (W) from Pappas' W boundary. A trench, 100 x 3-5 ft wide and 1-6 ft deep. Property owned by E. Stanfeld, mining rights by Madawaska Mines.

Magnetite # 3: About 400 ft NW of # 2, on the top of a ridge. Spotty diggings extend 300 ft W, 3-5 ft wide and 2-10 ft deep - magnetite with sphene.

Ilmenite: lot 15, con A, about 400 ft W of # 2 and 150 ft SW of # 3. Calcite face with vug, about 35 x 8 ft high, 10 ft W of a skid road on it's E side and 200 ft E of a skid road on it's W side.

This is the locality for the large ilmenite and magnetite crystals mentioned in the Ontario issue of the Mineralogical Record (1982).

Such specimens are often labeled as being from the mine (Faraday or Madawaska), but they were actually found at a surface showing on the property, also known as the Bentley Lake Occurrence.

Robinson & Chamberlain (1982) report under Ilmenite that "Fine crystals of ilmenite weighing more than 30 kg have been found associated with magnetite, biotite, microcline and apatite in a small calcite vein-dike on the Madawaska mines property near Bancroft."

And later, under Magnetite: "The second [magnetite] occurrence is at the ilmenite locality on the Madawaska mines property, where hundreds of fine crystals have been removed."

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Anatase
Formula: TiO2
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42; Ontario Ministry of Northern Development and Mines,MDI Number: MDI31F04SW00297
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Robinson & Chamberlain (1982) - Mineralogical Record v14 n2
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: P Haas collection; Robinson & Chamberlain (1982) - Mineralogical Record v14 n2; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
Calcite
Formula: CaCO3
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
'Feldspar Group'
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
Ilmenite
Formula: Fe2+TiO3
Reference: P Haas collection; Robinson & Chamberlain (1982) - Mineralogical Record v14 n2; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
Magnetite
Formula: Fe2+Fe3+2O4
Habit: large sharp octahedral crystals
Colour: dark metalic gray
Reference: Robinson & Chamberlain (1982) - Mineralogical Record v14 n2; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42; Ontario Ministry of Northern Development and Mines,MDI Number: MDI31F04SW00297
Microcline
Formula: K(AlSi3O8)
Reference: Robinson & Chamberlain (1982) - Mineralogical Record v14 n2
Quartz
Formula: SiO2
Reference: P Haas collection
Titanite
Formula: CaTi(SiO4)O
Reference: Ontario Ministry of Northern Development and Mines,MDI Number: MDI31F04SW00297

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Anatase4.DD.05TiO2
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Microcline9.FA.30K(AlSi3O8)
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Feldspar Group'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Anatase4.4.4.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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 with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Feldspar Group'-

List of minerals for each chemical element

HHydrogen
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
C CalciteCaCO3
OOxygen
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O QuartzSiO2
O MicroclineK(AlSi3O8)
O ApatiteCa5(PO4)3(Cl/F/OH)
O AnataseTiO2
O CalciteCaCO3
O FluorapatiteCa5(PO4)3F
O TitaniteCaTi(SiO4)O
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F ApatiteCa5(PO4)3(Cl/F/OH)
F FluorapatiteCa5(PO4)3F
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al MicroclineK(AlSi3O8)
SiSilicon
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si QuartzSiO2
Si MicroclineK(AlSi3O8)
Si TitaniteCaTi(SiO4)O
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P FluorapatiteCa5(PO4)3F
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K MicroclineK(AlSi3O8)
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca CalciteCaCO3
Ca FluorapatiteCa5(PO4)3F
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti IlmeniteFe2+TiO3
Ti AnataseTiO2
Ti TitaniteCaTi(SiO4)O
FeIron
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Satterly, J. (1977) A Catalogue of The Ontario Localities Represented by The Mineral Collection of The Royal Ontario Museum. Ontario Geological Survey, Miscellaneous Paper 70, 203, 218-219.
Robinson, G., Chamberlain, S. (1982) An Introduction to the Mineralogy of Ontario's Grenville Province. Mineralogical Record, 13, 71-86.

External Links


Other Regions, Features and Areas containing this locality

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