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Town of Bancroft, Dungannon Township, Hastings Co., Ontario, Canada

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Latitude & Longitude (WGS84): 45° 2' North , 77° 45' West
Latitude & Longitude (decimal): 45.03333,-77.75000
GeoHash:G#: f208ny04j
Köppen climate type:Dfb : Warm-summer humid continental climate


(Note that the name "Bancroft", "Bancroft area" or "Bancroft District" has been erroneously attached to innumerable specimens from neighbouring townships and even neighbouring counties.)

Regions containing this locality

Bancroft area (Bancroft district), Ontario, Canada

Area - 277 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

23 valid minerals.

Detailed Mineral List:

'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Apatite'
Reference: No reference listed
'Biotite'
Calcite
Formula: CaCO3
Reference: No reference listed
Cancrinite
Formula: (Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Clinohumite
Formula: Mg9(SiO4)4F2
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: matt neuzil
Diopside
Formula: CaMgSi2O6
Reference: JR Montgomery Collection
'Feldspar Group'
Forsterite
Formula: Mg2SiO4
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Goethite
Formula: α-Fe3+O(OH)
Graphite
Formula: C
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
'Hornblende'
Hydromagnesite
Formula: Mg5(CO3)4(OH)2 · 4H2O
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Magnetite
Formula: Fe2+Fe3+2O4
Microcline
Formula: K(AlSi3O8)
Perovskite
Formula: CaTiO3
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Pyrite
Formula: FeS2
'Pyroxene Group'
Pyrrhotite
Formula: Fe7S8
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Quartz
Formula: SiO2
Quartz var: Amethyst
Formula: SiO2
Quartz var: Smoky Quartz
Formula: SiO2
'Scapolite'
Sodalite
Formula: Na8(Al6Si6O24)Cl2
Spinel
Formula: MgAl2O4
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Thorite
Formula: Th(SiO4)
Thorite var: Uranothorite
Formula: (Th,U)SiO4
Titanite
Formula: CaTi(SiO4)O
Reference: No reference listed
Tochilinite
Formula: Fe2+5-6(Mg,Fe2+)5S6(OH)10
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Uraninite
Formula: UO2
Zircon
Formula: Zr(SiO4)
Zircon var: Cyrtolite
Formula: Zr[(SiO4),(OH)4]

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Tochilinite2.FD.35Fe2+5-6(Mg,Fe2+)5S6(OH)10
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Perovskite4.CC.30CaTiO3
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Spinel4.BB.05MgAl2O4
Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Hydromagnesite5.DA.05Mg5(CO3)4(OH)2 · 4H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
Group 9 - Silicates
Cancrinite9.FB.05(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Clinohumite9.AF.55Mg9(SiO4)4F2
Cordierite9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
Diopside9.DA.15CaMgSi2O6
Forsterite9.AC.05Mg2SiO4
Microcline9.FA.30K(AlSi3O8)
Sodalite9.FB.10Na8(Al6Si6O24)Cl2
Thorite9.AD.30Th(SiO4)
var: Uranothorite9.AD.30(Th,U)SiO4
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
var: Cyrtolite9.AD.30Zr[(SiO4),(OH)4]
Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Apatite-
Biotite-
Feldspar Group-
Hornblende-
Pyroxene Group-
Scapolite-
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Hydroxysulfides and Hydrated Sulfides
Tochilinite2.14.2.1Fe2+5-6(Mg,Fe2+)5S6(OH)10
Group 4 - SIMPLE OXIDES
A2X3
Perovskite4.3.3.1CaTiO3
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16b - HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
Hydromagnesite16b.7.1.1Mg5(CO3)4(OH)2 · 4H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Clinohumite52.3.2d.1Mg9(SiO4)4F2
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with Al substituted rings
Cordierite61.2.1.1(Mg,Fe)2Al3(AlSi5O18)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
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)
Al-Si Framework Feldspathoids and related species
Cancrinite76.2.5.3(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Sodalite76.2.3.1Na8(Al6Si6O24)Cl2
Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Apatite'-
'Biotite'-
'Feldspar Group'-
'Hornblende'-
'Pyroxene Group'-
Quartz
var: Amethyst
-SiO2
var: Smoky Quartz-SiO2
'Scapolite'-
Thorite
var: Uranothorite
-(Th,U)SiO4
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
Zircon
var: Cyrtolite
-Zr[(SiO4),(OH)4]

List of minerals for each chemical element

HHydrogen
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
H Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
H Goethiteα-Fe3+O(OH)
H HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
H JarositeKFe3+ 3(SO4)2(OH)6
H TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C CalciteCaCO3
C Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
C GraphiteC
C HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
OOxygen
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O Quartz (var: Amethyst)SiO2
O CalciteCaCO3
O Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
O ClinohumiteMg9(SiO4)4F2
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
O DiopsideCaMgSi2O6
O ForsteriteMg2SiO4
O Goethiteα-Fe3+O(OH)
O HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
O JarositeKFe3+ 3(SO4)2(OH)6
O MagnetiteFe2+Fe23+O4
O MicroclineK(AlSi3O8)
O PerovskiteCaTiO3
O QuartzSiO2
O Quartz (var: Smoky Quartz)SiO2
O SodaliteNa8(Al6Si6O24)Cl2
O SpinelMgAl2O4
O ThoriteTh(SiO4)
O TitaniteCaTi(SiO4)O
O TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O UraniniteUO2
O Thorite (var: Uranothorite)(Th,U)SiO4
O ZirconZr(SiO4)
FFluorine
F ClinohumiteMg9(SiO4)4F2
NaSodium
Na Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Na SodaliteNa8(Al6Si6O24)Cl2
MgMagnesium
Mg ClinohumiteMg9(SiO4)4F2
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mg DiopsideCaMgSi2O6
Mg ForsteriteMg2SiO4
Mg HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
Mg SpinelMgAl2O4
Mg TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
AlAluminium
Al Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
Al MicroclineK(AlSi3O8)
Al SodaliteNa8(Al6Si6O24)Cl2
Al SpinelMgAl2O4
SiSilicon
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si Quartz (var: Amethyst)SiO2
Si Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Si ClinohumiteMg9(SiO4)4F2
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
Si DiopsideCaMgSi2O6
Si ForsteriteMg2SiO4
Si MicroclineK(AlSi3O8)
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
Si SodaliteNa8(Al6Si6O24)Cl2
Si ThoriteTh(SiO4)
Si TitaniteCaTi(SiO4)O
Si Thorite (var: Uranothorite)(Th,U)SiO4
Si ZirconZr(SiO4)
SSulfur
S Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
S JarositeKFe3+ 3(SO4)2(OH)6
S PyriteFeS2
S PyrrhotiteFe7S8
S TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
ClChlorine
Cl SodaliteNa8(Al6Si6O24)Cl2
KPotassium
K JarositeKFe3+ 3(SO4)2(OH)6
K MicroclineK(AlSi3O8)
CaCalcium
Ca CalciteCaCO3
Ca Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Ca DiopsideCaMgSi2O6
Ca PerovskiteCaTiO3
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti PerovskiteCaTiO3
Ti TitaniteCaTi(SiO4)O
FeIron
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)
Fe Goethiteα-Fe3+O(OH)
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
ZrZirconium
Zr Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
Zr ZirconZr(SiO4)
ThThorium
Th ThoriteTh(SiO4)
Th Thorite (var: Uranothorite)(Th,U)SiO4
UUranium
U UraniniteUO2
U Thorite (var: Uranothorite)(Th,U)SiO4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neoproterozoic - Mesoproterozoic
541 - 1600 Ma



ID: 606942
Grenville Supergroup and Flinton Group

Age: Proterozoic (541 - 1600 Ma)

Stratigraphic Name: Flinton Group

Comments: Grenville Province Central Metasedimentary Belt

Lithology: Marble, calc-silicate rocks, skarn, tectonic breccias

Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. [1]

Ectasian
1200 - 1400 Ma



ID: 3184365
Mesoproterozoic intrusive rocks

Age: Ectasian (1200 - 1400 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Bancroft and District Mineral Collecting Guidebook

Mindat Articles

The 48th annual Bancroft Rockhound Gemboree, 2011 by Michael J. Bainbridge


Localities in this Region
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Canada

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