Hall chrome pit (Hall mine; Thetford quarry), Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada i
Regional Level Types
Hall chrome pit (Hall mine; Thetford quarry) Pit (Inactive)
Thetford Mines Municipality
Les Appalaches RCM Regional County Municipality
Chaudière-Appalaches Administrative Region
Québec Province
Canada Country

Regional Level Types
Hall chrome pit (Hall mine; Thetford quarry)	Pit (Inactive)
Thetford Mines	Municipality
Les Appalaches RCM	Regional County Municipality
Chaudière-Appalaches	Administrative Region
Québec	Province
Canada	Country

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Latitude & Longitude (WGS84):

46° 2' 18'' North , 71° 16' 56'' West

Latitude & Longitude (decimal):

G#: f2jmcvjdm

Type:

Pit (Inactive) - last checked 2024

Deposit first discovered:

1899

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Thetford-Mines	25,704 (2016)	6.4km
Saint-Joseph-de-Coleraine	1,319 (2016)	10.3km
Adstock	2,643 (2016)	15.5km
Weedon Centre	1,059 (2019)	39.2km
Plessisville	6,677 (2010)	42.0km

Mindat Locality ID:

145316

Long-form identifier:

mindat:1:2:145316:7

GUID (UUID V4):

2d09ec6f-9033-4fff-9a91-34936e91b12a

Formerly: Hall chrome pit, Thetford Mines, Mégantic Co., Québec, Canada

An inactive chromite mine operated in the early 1900s.

Coordinates extrapolated from topographic map.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Chromium

Mineral List

17 valid minerals.

Detailed Mineral List:

ⓘ Awaruite

Formula: Ni₃Fe

References:

Canadian Mineralogist 28, 579.

ⓘ Bowieite

Formula: Rh₂S₃

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Braggite

Formula: PdPt₃S₄

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Cuproiridsite

Formula: (Cu,Fe)Ir₂S₄

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Cuprorhodsite

Formula: (Cu¹⁺_0.5Fe³⁺_0.5)Rh³⁺₂S₄

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Erlichmanite

Formula: OsS₂

References:

Pagé et al. (2001) GSA 2001 NE program abstracts

ⓘ Grossular

Formula: Ca₃Al₂(SiO₄)₃

References:

Poitevin & Graham (1918)

ⓘ Heazlewoodite

Formula: Ni₃S₂

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Iridium

Formula: (Ir,Os,Ru)

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Isoferroplatinum

Formula: Pt₃Fe

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Laurite

Formula: RuS₂

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Osmium

Formula: (Os,Ir,Ru)

References:

Canadian Mineralogist 28, 579.

ⓘ 'Prassoite'

Formula: Rh₁₇S₁₅

References:

Pagé et al. (2001) GSA 2001 NE program abstracts

ⓘ Stevensite

Formula: (Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂

References:

GSC collection specimen

ⓘ Tetraferroplatinum

Formula: PtFe

References:

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

ⓘ Vesuvianite

Formula: Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉

References:

Poitevin & Graham (1918)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Awaruite	1.AE.20	Ni₃Fe
ⓘ	Osmium	1.AF.05	(Os,Ir,Ru)
ⓘ	Iridium	1.AF.10	(Ir,Os,Ru)
ⓘ	Isoferroplatinum	1.AG.35	Pt₃Fe
ⓘ	Tetraferroplatinum	1.AG.40	PtFe
Group 2 - Sulphides and Sulfosalts
ⓘ	Heazlewoodite	2.BB.05	Ni₃S₂
ⓘ	Braggite	2.CC.35a	PdPt₃S₄
ⓘ	Cuproiridsite	2.DA.05	(Cu,Fe)Ir₂S₄
ⓘ	Cuprorhodsite	2.DA.05	(Cu¹⁺_0.5Fe³⁺_0.5)Rh³⁺₂S₄
ⓘ	Bowieite	2.DB.15	Rh₂S₃
ⓘ	Erlichmanite	2.EB.05a	OsS₂
ⓘ	Laurite	2.EB.05a	RuS₂
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
Group 9 - Silicates
ⓘ	Grossular	9.AD.25	Ca₃Al₂(SiO₄)₃
ⓘ	Vesuvianite	9.BG.35	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
ⓘ	Stevensite	9.EC.45	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂
Unclassified
ⓘ	'Prassoite'	-	Rh₁₇S₁₅

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Stevensite	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂
H	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
O	Oxygen
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Stevensite	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂
O	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Na	Sodium
Na	ⓘ Stevensite	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂
Mg	Magnesium
Mg	ⓘ Stevensite	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂
Mg	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Al	Aluminium
Al	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Al	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Si	Silicon
Si	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Si	ⓘ Stevensite	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂
Si	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
S	Sulfur
S	ⓘ Bowieite	Rh₂S₃
S	ⓘ Braggite	PdPt₃S₄
S	ⓘ Cuproiridsite	(Cu,Fe)Ir₂S₄
S	ⓘ Cuprorhodsite	(Cu¹⁺_0.5Fe³⁺_0.5)Rh₂³⁺S₄
S	ⓘ Erlichmanite	OsS₂
S	ⓘ Heazlewoodite	Ni₃S₂
S	ⓘ Laurite	RuS₂
S	ⓘ Prassoite	Rh₁₇S₁₅
Ca	Calcium
Ca	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Ca	ⓘ Stevensite	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂
Ca	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Awaruite	Ni₃Fe
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Cuproiridsite	(Cu,Fe)Ir₂S₄
Fe	ⓘ Cuprorhodsite	(Cu¹⁺_0.5Fe³⁺_0.5)Rh₂³⁺S₄
Fe	ⓘ Isoferroplatinum	Pt₃Fe
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Tetraferroplatinum	PtFe
Fe	ⓘ Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
Ni	Nickel
Ni	ⓘ Awaruite	Ni₃Fe
Ni	ⓘ Heazlewoodite	Ni₃S₂
Cu	Copper
Cu	ⓘ Cuproiridsite	(Cu,Fe)Ir₂S₄
Cu	ⓘ Cuprorhodsite	(Cu¹⁺_0.5Fe³⁺_0.5)Rh₂³⁺S₄
Ru	Ruthenium
Ru	ⓘ Iridium	(Ir,Os,Ru)
Ru	ⓘ Laurite	RuS₂
Ru	ⓘ Osmium	(Os,Ir,Ru)
Rh	Rhodium
Rh	ⓘ Bowieite	Rh₂S₃
Rh	ⓘ Cuprorhodsite	(Cu¹⁺_0.5Fe³⁺_0.5)Rh₂³⁺S₄
Rh	ⓘ Prassoite	Rh₁₇S₁₅
Pd	Palladium
Pd	ⓘ Braggite	PdPt₃S₄
Os	Osmium
Os	ⓘ Erlichmanite	OsS₂
Os	ⓘ Iridium	(Ir,Os,Ru)
Os	ⓘ Osmium	(Os,Ir,Ru)
Ir	Iridium
Ir	ⓘ Cuproiridsite	(Cu,Fe)Ir₂S₄
Ir	ⓘ Iridium	(Ir,Os,Ru)
Ir	ⓘ Osmium	(Os,Ir,Ru)
Pt	Platinum
Pt	ⓘ Braggite	PdPt₃S₄
Pt	ⓘ Isoferroplatinum	Pt₃Fe
Pt	ⓘ Tetraferroplatinum	PtFe

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

Laurentides DomainDomain
Quebec basinBasin

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References

Corrivaux, L. & Laflamme, J.H. G. (1990) Minéralogie des éléments du group du platin dans les chromitites de l'ophiolite de Thetford Mines, Québec. Canadian Mineralogist 28, 579-595.

GAUDARD, S. (1993): Voyages au coeur des Appalaches. Published by: Musée Minéralogique et Minier de la région de l’amiante, Thetford Mines, Québec, (pgs. 103)

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