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Diamond Willow Mine, McTavish Township, Thunder Bay District, Ontario, Canadai
Regional Level Types
Diamond Willow MineMine
McTavish TownshipTownship
Thunder Bay DistrictDistrict
OntarioProvince
CanadaCountry

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Latitude & Longitude (WGS84):
48° 41' 10'' North , 88° 39' 57'' West
Latitude & Longitude (decimal):
48.68611,-88.66583
GeoHash:
G#:f08uyr590
GRN:
N33W43
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Mindat Locality ID:
10699
Long-form identifier:
mindat:1:2:10699:0
GUID (UUID V4):
0


An amethyst mine located near Pearl Station. Features 50' to 75' wide trenches. Mineralization is in the Algoman formation, early Precambrian granite (quartz monzonite). Owned by Mr. Gunnard Noyes.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Detailed Mineral List:

ⓘBaryte
Formula:BaSO4
Description: Occurs in the Algoman formation, early Precambrian granite (quartz monzonite).
ⓘHematite
Formula:Fe2O3
ⓘQuartz
Formula:SiO2
Description: Occurs in the Algoman formation, early Precambrian granite (quartz monzonite).
✪Quartz var. Amethyst
Formula:SiO2
Description: Occurs in the Algoman formation, early Precambrian granite (quartz monzonite).

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘQuartz
var. Amethyst		4.DA.05SiO2
ⓘ4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4

List of minerals for each chemical element

OOxygen
OⓘQuartz var.AmethystSiO2
OⓘBaryteBaSO4
OⓘHematiteFe2O3
OⓘQuartzSiO2
SiSilicon
SiⓘQuartz var.AmethystSiO2
SiⓘQuartzSiO2
SSulfur
SⓘBaryteBaSO4
FeIron
FeⓘHematiteFe2O3
BaBarium
BaⓘBaryteBaSO4

Other Regions, Features and Areas containing this locality

North AmericaContinent
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, pleaseregister so you can add to our database. This locality information is for reference purposes only. You should never attempt tovisit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holdersfor access and that you are aware of all safety precautions necessary.

References

Grice, Joel D. (1989) Amethyst from Thunder Bay, Ontario: An Ancient Amulet. InFamous Mineral Localities of Canada. Fitzhenry & Whiteside Limited & the National Museum of Natural Sciences. p.62-72.
Sabina, Ann P. (1991) Rocks and minerals for the collector, Sudbury to Winnipeg.Miscellaneous report 49. Geological Survey of Canadap.117
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844.doi:10.2138/am-2024-9486.
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