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Mont Shefford, Shefford, La Haute-Yamaska RCM, Estrie, Québec, Canadai
Regional Level Types
Mont SheffordMountain
SheffordMunicipality
La Haute-Yamaska RCMRegional County Municipality
EstrieAdministrative Region
QuébecProvince
CanadaCountry

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Latitude & Longitude (WGS84):
45° 22' North , 72° 37' West
Latitude & Longitude (decimal):
45.36667,-72.61667
GRN:
N31W37
Type:
Mountain
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Bromont6,049 (2016)6.1km
Waterloo4,064 (2016)8.1km
Granby53,979 (2017)9.8km
Lac-Brome5,629 (2016)18.4km
Cowansville10,887 (2017)21.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Mineralogical Association of Canada Québec, Quebec39km
Club de Minéralogie de QuébecQuébec, Quebec39km
Mindat Locality ID:
247472
Long-form identifier:
mindat:1:2:247472:7
GUID (UUID V4):
0


Mont Shefford is one of the Monteregian Hills intrusions, roughly oval-shaped approximately 7 x 4 km at the base and intrudes Cambro-Ordovician sedimentary rocks. It comprises dioritic and gabbroic rocks, nepheline monzodiorite, pulaskite, nordmarkite, breccias, and subvolcanic porphyries.
Age estimates are 119±8 Ma to 138±8 Ma.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

ⓘ Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘ 'Apatite'
Formula: Ca5(PO4)3A
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Cancrinite
Formula: (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ⓘ 'Fayalite-Tephroite Series'
ⓘ 'Fayalite-Tephroite Series var. Knebelite'
Formula: from (Fe1.5Mn0.5)2SiO4 to (Mn1.5Fe0.5)2SiO4
ⓘ Hastingsite
Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘ Kaersutite
Formula: NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ Quartz
Formula: SiO2
ⓘ Sodalite
Formula: Na4(Si3Al3)O12Cl
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘAegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘHastingsite9.DE.15NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘKaersutite9.DE.15NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘCancrinite9.FB.05(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ⓘSodalite9.FB.10Na4(Si3Al3)O12Cl
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Fayalite-Tephroite Series'-
ⓘ'var. Knebelite'-from (Fe1.5Mn0.5)2SiO4 to (Mn1.5Fe0.5)2SiO4
ⓘ'Apatite'-Ca5(PO4)3A

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Hⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
CCarbon
Cⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
OOxygen
Oⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Oⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Oⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ QuartzSiO2
Oⓘ SodaliteNa4(Si3Al3)O12Cl
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ ZirconZr(SiO4)
Oⓘ Fayalite-Tephroite Series
Oⓘ Fayalite-Tephroite Series var. Knebelitefrom (Fe1.5Mn0.5)2SiO4 to (Mn1.5Fe0.5)2SiO4
Oⓘ ApatiteCa5(PO4)3A
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Naⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Naⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Naⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ SodaliteNa4(Si3Al3)O12Cl
MgMagnesium
Mgⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
AlAluminium
Alⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Alⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Alⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ SodaliteNa4(Si3Al3)O12Cl
SiSilicon
Siⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Siⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Siⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ QuartzSiO2
Siⓘ SodaliteNa4(Si3Al3)O12Cl
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ ZirconZr(SiO4)
Siⓘ Fayalite-Tephroite Series
Siⓘ Fayalite-Tephroite Series var. Knebelitefrom (Fe1.5Mn0.5)2SiO4 to (Mn1.5Fe0.5)2SiO4
PPhosphorus
Pⓘ ApatiteCa5(PO4)3A
SSulfur
Sⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ClChlorine
Clⓘ SodaliteNa4(Si3Al3)O12Cl
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Caⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Caⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ ApatiteCa5(PO4)3A
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Tiⓘ TitaniteCaTi(SiO4)O
MnManganese
Mnⓘ Fayalite-Tephroite Series
Mnⓘ Fayalite-Tephroite Series var. Knebelitefrom (Fe1.5Mn0.5)2SiO4 to (Mn1.5Fe0.5)2SiO4
FeIron
Feⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Feⓘ Fayalite-Tephroite Series
Feⓘ Fayalite-Tephroite Series var. Knebelitefrom (Fe1.5Mn0.5)2SiO4 to (Mn1.5Fe0.5)2SiO4
ZrZirconium
Zrⓘ ZirconZr(SiO4)

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, 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.

References

DRESSER, J.A. (1902) Report on the geology and petrography of Shefford Mountain. Geological Survey of Canada, Annual Report 13, L: 1-35.
Adams, Frank D. (1903) The Monteregian Hills: A Canadian Petrographical Province. The Journal of Geology, 11 (3) 239-282 doi:10.1086/621075
ADAMS, F.D. (1913) The Monteregian Hills. International Geological Congress, Guide Book #3, 29-80. Geological Survey of Canada, Ottawa.
Dresser, J.A., Denis, T.C. (1944) Geology of Quebec. Vol. II, 469 470, Geological Report 20. Province of Quebec Department of Mines.
Currie, K. L. (1970) An hypothesis on the origin of alkaline rocks suggested by the tectonic setting of the Monteregian hills. The Canadian Mineralogist, 10 (3). p.411-420.
Frisch, Thomas (1970) Chemical variations among the amphiboles of Shefford mountain, a Monteregian intrusion in southern Quebec. The Canadian Mineralogist, 10 (3). p.553-570.
Philpotts, A. R. (1970) Mechanism of emplacement of the Monteregian intrusions. The Canadian Mineralogist, 10 (3). p.395-410.
Frisch, Thomas (1970) Chemical variations among the amphiboles of Shefford mountain, a Monteregian intrusion in southern Quebec. The Canadian Mineralogist, 10 (3). p.553-570.
Currie, K. L. (1976) The alkaline rocks of Canada. Bulletin 239. Geological Survey of Canada 228 pp. doi:10.4095/103981
Woolley, Alan R. (1987) Alkaline Rocks and Carbonatites of the World. Part 1: North and South America - Alkaline Rocks and Carbonatites of the World. British Museum (Natural History). 216 pp.pp.49-57
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