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Bear Lake diggings (Gibson Road Western occurrence), Monmouth Township, Haliburton Co., Ontario, Canada

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Latitude & Longitude (WGS84): 44° 57' 48'' North , 78° 19' 6'' West
Latitude & Longitude (decimal): 44.96333,-78.31833
GeoHash:G#: drbrcc666
Locality type:Diggings
Köppen climate type:Dfb : Warm-summer humid continental climate


The Bear Lake Diggings was, prior to 2016, the first publicly protected collecting site in the Province of Ontario. In 2016 it was sold and the new owner has closed the area to collectors.

The large amphibole and fluorapatite crystals are found in narrow "vein-dykes" emplaced in rocks of the Glamorgan complex, consisting mostly of gneiss amphibolite and marble. The vein-dykes are steep and sub-parallel and run approximately east-west. They are typically 1-2 m across.

The list of amphiboles for this locality is based on the microprobe analyses and normalizations provided by Hawthorne and Oberti (2006) and the guidelines provided in Hawthorne et al (2012) amphibole nomenclature report. Even though the analysed amphibole samples (euhedral crystals to 5 cm) was relatively homogenous it is possible that other amphiboles with richterite/katophorite root names are present at the locality. The amphiboles from here are normally labelled with a katophorite root name, and this is reflected in the uploaded photos of amphiboles from this locality. It is however quite likely that some of the photos show richterite root name amphiboles rather than katophorite root name amphiboles.

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Bear Lake diggings (Gibson Road Western occurrence), Tory Hill, Monmouth Township, Haliburton Co., Ontario, Canada
Bear lake Diggings
Bear Lake diggings (Gibson Road Western occurrence), Gooderham, Monmouth Township, Haliburton Co., Ontario, Canada
Bear Lake diggings, Monmouth Township, Haliburton Co., Ontario, Canada

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


20 valid minerals. 2 (TL) - type locality of valid minerals. 4 erroneous literature entries.

Detailed Mineral List:

Amphibole Supergroup
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Van King; Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Anatase
Formula: TiO2
Reference: Bill Plavic
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Description: (biotite)
Reference: Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Anorthite
Formula: Ca(Al2Si2O8)
Anorthite var: Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
'Apatite'
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
'Apatite var: Trillium'
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
'Biotite'
Calcite
Formula: CaCO3
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42; Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Ferri-fluoro-katophorite (TL)
Formula: Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Habit: Large well formed crystals
Colour: dark brown to black
Description: Data from Hawthorne et al. (2006) give the following composition: (Na0.507K0.315)0.822(Ca1.177Na0.823)2.000(Li0.023Zn0.003Mg3.276Mn0.049Fe2+1.007Fe3+0.486Ti0.081Al0.053)4.970(Si7.326Al0.638)8.000(F1.277OH0.723)2.000
Reference: Hawthorne, F.C., Oberti, R., Martin, R.F. (2006): Short-range order in amphiboles from the Bear Lake Diggings, Ontario. Canadian Mineralogist, 44, 1171-1179. ; Oberti, R., Boiocchi, M., Hawthorne, F.C., Ball, N.A., Martin, R.F. (2016) Ferrifluoro-katophorite, IMA 2015-096. CNMNC Newsletter No. 29, February 2016, 203. Mineralogical Magazine: 80: 199–205
Ferro-hornblende
Formula: ☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Description: No data supports the presence of Fe2+ dominant amphiboles at this locality
Reference: www.John Betts.com
Ferro-katophorite
Formula: {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
Colour: black
Description: No data supports the presence of Fe2+ dominant amphiboles at this locality
Reference: Positively identified by a geologist at the Bancroft Rockhound Gamboreen, in the collection of M. Adamowicz
Fluorapatite
Formula: Ca5(PO4)3F
Habit: 45cm
Colour: green
Reference: Van King; G. W. Robinson, V. King (1993) Whats New in Minerals. Mineralogical Record 24:381-395; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42; Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
'Fluoro-katophorite'
Formula: Na(CaNa)(Mg4Al)(AlSi7O22)F2
Colour: n/a
Description: The katophorite amphiboles was redefined in the Hawthorne et al. (2012) amphibole nomenclature report and the mineral originally reported as fluoro-katophorite is now considered to be ferri-fluoro-katophorite.
Reference: F.C. Hawthorne, R. Oberti and R.F. Martin (2006) Short-range order in amphiboles from the Bear Lake diggings, Ontario. Canadian Mineralogist, 44, 1171-1179.; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
Fluoro-richterite ?
Formula: {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Description: Data from Hawthorne et al.(2006) show the presence richterites with a high F content, but with (OH)>F, please see the richterite data for data
Reference: F.C. Hawthorne, R. Oberti and R.F. Martin (2006) Short-range order in amphiboles from the Bear Lake diggings, Ontario. Canadian Mineralogist, 44, 1171-1179.
Fluoro-tremolite ?
Formula: ☐{Ca2}{Mg5}(Si8O22)F2
Description: Data from Hawthorne et al.(2006) show the presence tremolites with a high F content, but with (OH)>F, please see the tremolite data for more information
Reference: F.C. Hawthorne, R. Oberti and R.F. Martin (2006) Short-range order in amphiboles from the Bear Lake diggings, Ontario. Canadian Mineralogist, 44, 1171-1179.
'Hornblende'
Description: 'Hornblende' is in this context used in the petrological meaning as a black amphibole, not to be confused with the mineral species with a hornblende root name.
Reference: GSC Report 39
Katophorite
Formula: {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Description: No data supports the presence of amphiboles at this locality with Ʃ(AlFe3+)>0.5 apfu and Al>Fe3+
Reference: David K. Joyce specimen
Microcline
Formula: K(AlSi3O8)
Reference: G. W. Robinson, V. King (1993) Whats New in Minerals. Mineralogical Record 24:381-395; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
Monazite-(Ce)
Formula: Ce(PO4)
Reference: David Joyce; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42; Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Nioboaeschynite-(Y) (TL)
Formula: (Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
Reference: Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Pyrite
Formula: FeS2
Reference: Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Quartz
Formula: SiO2
Description: A constituent in pseudomorphs after titanite.
Reference: Van King; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42; Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Richterite
Formula: {Na}{NaCa}{Mg5}(Si8O22)(OH)2
Description: Data from Hawthorne et al. (2006) give the following composition: (Na0.342K0.174)0.516(Ca1.466Na0.515)1.981(Zn0.006Mg4.700Mn0.013Fe2+0.215Fe3+0.061Ti0.004Al0.020)5.019(Si7.909Al0.091)8.000(F0.721OH1.279)2.000
Reference: Hawthorne, F.C., Oberti, R., Martin, R.F. (2006): Short-range order in amphiboles from the Bear Lake Diggings, Ontario. Canadian Mineralogist, 44, 1171-1179.
Rutile
Formula: TiO2
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42
'Scapolite'
Reference: No reference listed
Thorite
Formula: Th(SiO4)
Reference: Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Titanite
Formula: CaTi(SiO4)O
Habit: bladed xls to 8cm 20cm across, twinned
Colour: dark brown
Reference: G. W. Robinson, V. King (1993) Whats New in Minerals. Mineralogical Record 24:381-395; Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42; Bermanec V, Tomašić N, Kniewald G, Back M E, Zagler G (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada, The Canadian Mineralogist 46, 395-402
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Description: Data from Hawthorne et al. (2006) give the following composition: (Na0.176K0.177)0.353(Ca1.610Na0.390)2.000(Zn0.004Mg4.644Mn0.022Fe2+0.249Ti0.002Al0.016)4.937Si8.035(F0.584OH1.416)2.000
Reference: Hawthorne, F.C., Oberti, R., Martin, R.F. (2006): Short-range order in amphiboles from the Bear Lake Diggings, Ontario. Canadian Mineralogist, 44, 1171-1179.
Zircon
Formula: Zr(SiO4)
Reference: Joyce, D. K. (2006) Calcite Vein-Dikes of the Grenville Geological Province, Ontario, Canada. Rocks and Minerals 81:34-42

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Anatase'4.DD.05TiO2
Nioboaeschynite-(Y) (TL)4.DF.05(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Monazite-(Ce)8.AD.50Ce(PO4)
Group 9 - Silicates
'Annite'9.EC.20KFe2+3(AlSi3O10)(OH)2
'Anorthite'9.FA.35Ca(Al2Si2O8)
var: Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Ferro-hornblende ?9.DE.10☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Ferro-katophorite ?9.DE.20{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
Fluoro-richterite ?9.DE.20{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Fluoro-tremolite ?9.DE.10☐{Ca2}{Mg5}(Si8O22)F2
Katophorite ?9.DE.20{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Microcline9.FA.30K(AlSi3O8)
Richterite9.DE.20{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Thorite9.AD.30Th(SiO4)
Titanite9.AG.15CaTi(SiO4)O
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
'Zircon'9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apatite'-
'var: Trillium'-
'Biotite'-
Ferri-fluoro-katophorite (TL)-Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Fluoro-katophorite ?-Na(CaNa)(Mg4Al)(AlSi7O22)F2
Hornblende-
Scapolite-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX2
Anatase4.4.4.1TiO2
Rutile4.4.1.1TiO2
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
AB2O6
Nioboaeschynite-(Y) (TL)8.3.6.7(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
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] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Katophorite ?66.1.3b.11{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Richterite66.1.3b.9{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Annite71.2.2b.3KFe2+3(AlSi3O10)(OH)2
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)
Unclassified Minerals, Rocks, etc.
Amphibole Supergroup-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Anorthite-Ca(Al2Si2O8)
var: Bytownite-(Ca,Na)[Al(Al,Si)Si2O8]
'Apatite'-
'var: Trillium'-
'Biotite'-
Ferri-fluoro-katophorite (TL)-Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Ferro-hornblende ?-☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Ferro-katophorite ?-{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
'Fluoro-katophorite' ?-Na(CaNa)(Mg4Al)(AlSi7O22)F2
Fluoro-richterite ?-{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Fluoro-tremolite ?-☐{Ca2}{Mg5}(Si8O22)F2
'Hornblende'-
'Scapolite'-

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H AnniteKFe32+(AlSi3O10)(OH)2
H Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
H Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
H Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
H Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
H Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O AnataseTiO2
O AnniteKFe32+(AlSi3O10)(OH)2
O AnorthiteCa(Al2Si2O8)
O Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
O CalciteCaCO3
O Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
O Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
O Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
O FluorapatiteCa5(PO4)3F
O Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
O Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
O Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2
O Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
O MicroclineK(AlSi3O8)
O Monazite-(Ce)Ce(PO4)
O Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
O QuartzSiO2
O Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
O RutileTiO2
O ThoriteTh(SiO4)
O TitaniteCaTi(SiO4)O
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O ZirconZr(SiO4)
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
F FluorapatiteCa5(PO4)3F
F Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
F Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
F Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2
NaSodium
Na Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Na Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Na Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Na Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Na Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Na Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Na Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
MgMagnesium
Mg Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Mg Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Mg Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Mg Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2
Mg Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Mg Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al AnniteKFe32+(AlSi3O10)(OH)2
Al AnorthiteCa(Al2Si2O8)
Al Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Al Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Al Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Al Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Al Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Al Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Al MicroclineK(AlSi3O8)
SiSilicon
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si AnniteKFe32+(AlSi3O10)(OH)2
Si AnorthiteCa(Al2Si2O8)
Si Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Si Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Si Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Si Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Si Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Si Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Si Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2
Si Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Si MicroclineK(AlSi3O8)
Si QuartzSiO2
Si Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Si ThoriteTh(SiO4)
Si TitaniteCaTi(SiO4)O
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si ZirconZr(SiO4)
PPhosphorus
P FluorapatiteCa5(PO4)3F
P Monazite-(Ce)Ce(PO4)
SSulfur
S PyriteFeS2
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
K AnniteKFe32+(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
CaCalcium
Ca AnorthiteCa(Al2Si2O8)
Ca Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Ca CalciteCaCO3
Ca Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Ca Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Ca Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Ca FluorapatiteCa5(PO4)3F
Ca Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Ca Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Ca Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2
Ca Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Ca Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
Ca Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Ca TitaniteCaTi(SiO4)O
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
TiTitanium
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti AnataseTiO2
Ti Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
FeIron
Fe AnniteKFe32+(AlSi3O10)(OH)2
Fe Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Fe Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Fe Ferro-katophorite{Na}{CaNa}{Fe42+Al}[(AlSi7)O22](OH)2
Fe Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
Fe PyriteFeS2
YYttrium
Y Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
CeCerium
Ce Monazite-(Ce)Ce(PO4)
TaTantalum
Ta Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
ThThorium
Th Nioboaeschynite-(Y)(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6
Th ThoriteTh(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: 620666
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: 3185742
Mesoproterozoic sedimentary rocks

Age: Ectasian (1200 - 1400 Ma)

Lithology: Marble

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

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Sabina, A.P. (1986) Rocks and Minerals for the Collector, Bancroft-Parry Sound Area and Southern Ontario. Geological Survey of Canada Miscellaneous Report 39.
Hawthorne, F.C., Oberti, R. (2006) Short-range order in amphiboles from the Bear Lake Diggings, Ontario. The Canadian Mineralogist, 44, 1171-1179.
Bermanec, V., Tomašić, N., Kniewald, G., Back, M.E., Zagler, G. (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada. The Canadian Mineralogist 46, 395-402.

Mindat Articles

Searching for crystals in Calcite Trenches at Bear Lake Diggings, Ontario by Michael Adamowicz


External Links



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