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Mill Lake Quarry, McDougall Township, Parry Sound District, Ontario, Canadai
Regional Level Types
Mill Lake QuarryQuarry
McDougall TownshipTownship
Parry Sound DistrictDistrict
OntarioProvince
CanadaCountry

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Latitude & Longitude (WGS84):
45° 21' 47'' North , 80° 0' 56'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Parry Sound6,469 (2018)2.3km
Mindat Locality ID:
21908
Long-form identifier:
mindat:1:2:21908:1
GUID (UUID V4):
fbd55418-9895-4703-bfc3-74af19b2048e


In feldspar-biotite gneiss.

"The quarry is on the western shore of Mill Lake. It is operated by Mr. W.R. Hall for gneiss used as flagstone, and veneer for buildings."
The Mill Lake stone quarry, lots 24 and 25, concession III, McDougall township, on Mill lake, l 1/2 miles from Parry Sound, was formerly operated by R. R. Hall and is now run by his son, J. Hall. The deposit has been described by Parks. The rock is a finely laminated, pink, grey, and white biotite gneiss of sedimentary origin. Strong partings occur from 2 to 4 feet apart, and there are well-developed joints. The rock splits readily parallel to the gneissic structure and makes excellent flagstones. As a building stone it was used in the Court House and Registry Office foundations in Parry Sound. The deposit has been worked intermittently from 1900 (?) to the present time. All operations are carried out by hand. No record of production is available prior to 1923. From 1923 to 1941, inclusive, the total production was valued at |2,073. In 1941 flag stones sold for 6 cents per square foot, and building stone for $6 per cord (4 by 4 by 8 feet).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Detailed Mineral List:

'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
Habit: massive
Colour: lustrious, black
'Garnet Group'
Formula: X3Z2(SiO4)3
Description: sparsely disseminated
Magnetite
Formula: Fe2+Fe3+2O4
Description: sparsely disseminated

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Unclassified
'Garnet Group'-X3Z2(SiO4)3
'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
H Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
OOxygen
O MagnetiteFe2+Fe23+O4
O Garnet GroupX3Z2(SiO4)3
O Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FeIron
Fe MagnetiteFe2+Fe23+O4

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

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