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Bear Lake diggings, Monmouth Township, Highlands East Township, Haliburton County, Ontario, Canadai
Regional Level Types
Bear Lake diggingsDiggings
Monmouth TownshipTownship (Former)
Highlands East TownshipTownship
Haliburton CountyCounty
OntarioProvince
CanadaCountry

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Latitude & Longitude (WGS84):
44° 57' 47'' North , 78° 19' 5'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Haliburton Village1,149 (2019)18.8km
Bancroft3,838 (2008)37.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Bancroft Gem and Mineral Club and MuseumBancroft, Ontario38km
Kawartha Rock & Fossil ClubPeterborough, Ontario46km
Mindat Locality ID:
560
Long-form identifier:
mindat:1:2:560:0
GUID (UUID V4):
0
Other/historical names associated with this locality:
Gibson Road Western occurrence


The Bear Lake Diggings were, 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.

Note on the mineral list:

The list of amphiboles for this locality is based on the microprobe analyses and normalizations provided by Hawthorne et al. (2006) and the guidelines provided in the Hawthorne et al. (2012) amphibole nomenclature report. Even though the analysed amphibole samples (euhedral crystals to 5 cm) were 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 photos show richterite root name amphiboles rather than katophorite root name amphiboles.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


20 valid minerals. 1 (TL) - type locality of valid minerals. 4 erroneous literature entries.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aeschynite-(Y)
Formula: Y(TiNb)O6
ⓘ Albite
Formula: Na(AlSi3O8)
References:
PXRD at NMBGMR by Patrick HaynesIdentified by Patrick Haynes: XRD
ⓘ 'Amphibole Supergroup'
Formula: AB2C5(T8O22)W2
ⓘ Anatase
Formula: TiO2
References:
ⓘ Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Description: (biotite)
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
ⓘ 'Apatite'
Formula: Ca5(PO4)3A
ⓘ 'Apatite var. Trillium'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
✪ Ferri-fluoro-katophorite (TL)
Formula: Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2
Type Locality:
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
ⓘ Ferro-hornblende
Formula: ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2
Description: No data supports the presence of Fe2+ dominant amphiboles at this locality
References:
ⓘ Ferro-katophorite
Formula: Na(CaNa)(Fe2+4Al)(AlSi7O22)(OH)2
Colour: black
Description: No data supports the presence of Fe2+ dominant amphiboles at this locality
✪ Fluorapatite
Formula: Ca5(PO4)3F
Habit: 45cm
Colour: green
ⓘ '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.
ⓘ Fluoro-richterite
Formula: Na(CaNa)Mg5(Si8O22)F2
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. Additional EPMA work on amphiboles located from Bear Lake Road diggings verify the presence of fluoro-richterite, with up to 1.34 apfu F (analyses by Frank K. Mazdab of samples from Frank Craig's collection). See additional discussion at https://www.mindat.org/mesg-6-455298.html
ⓘ Fluoro-tremolite ?
Formula: ◻Ca2Mg5(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
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
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.
ⓘ Katophorite
Formula: Na(CaNa){Mg4Al)(AlSi7O22)(OH)2
Description: No data supports the presence of amphiboles at this locality with Ʃ(AlFe3+)>0.5 apfu and Al>Fe3+
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Monazite-(Ce)
Formula: Ce(PO4)
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
Description: A constituent in pseudomorphs after titanite.
ⓘ Richterite
Formula: Na(CaNa)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
ⓘ Rutile
Formula: TiO2
ⓘ 'Scapolite'
ⓘ Thorite
Formula: Th(SiO4)
✪ Titanite
Formula: CaTiO(SiO4)
Habit: bladed xls to 8cm 20cm across, twinned
Colour: dark brown
ⓘ Tremolite
Formula: ◻Ca2Mg5(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
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
ⓘAnatase4.DD.05TiO2
ⓘAeschynite-(Y)4.DF.05Y(TiNb)O6
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
ⓘMonazite-(Ce)8.AD.50Ce(PO4)
ⓘFluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
ⓘThorite9.AD.30Th(SiO4)
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTiO(SiO4)
ⓘFerro-hornblende ?9.DE.10◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘFluoro-tremolite ?9.DE.10◻Ca2Mg5(Si8O22)F2
ⓘFerro-katophorite ?9.DE.20Na(CaNa)(Fe2+4Al)(AlSi7O22)(OH)2
ⓘRichterite9.DE.20Na(CaNa)Mg5(Si8O22)(OH)2
ⓘFluoro-richterite9.DE.20Na(CaNa)Mg5(Si8O22)F2
ⓘKatophorite ?9.DE.20Na(CaNa){Mg4Al)(AlSi7O22)(OH)2
ⓘ'Fluoro-katophorite' ?9.DE.20Na(CaNa)(Mg4Al)(AlSi7O22)F2
ⓘFerri-fluoro-katophorite (TL)9.DE.20Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2
ⓘAnnite9.EC.20KFe2+3(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar. Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5(T8O22)W2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Scapolite'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'Apatite
var. Trillium'
-Ca5(PO4)3(Cl/F/OH)
ⓘ''-Ca5(PO4)3A

List of minerals for each chemical element

HHydrogen
Hⓘ AnniteKFe32+(AlSi3O10)(OH)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Hⓘ Ferro-katophoriteNa(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Hⓘ RichteriteNa(CaNa)Mg5(Si8O22)(OH)2
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hⓘ KatophoriteNa(CaNa){Mg4Al)(AlSi7O22)(OH)2
Hⓘ Apatite var. TrilliumCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ Aeschynite-(Y)Y(TiNb)O6
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Amphibole SupergroupAB2C5(T8O22)W2
Oⓘ AnataseTiO2
Oⓘ AnniteKFe32+(AlSi3O10)(OH)2
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ CalciteCaCO3
Oⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Oⓘ FluorapatiteCa5(PO4)3F
Oⓘ Ferro-katophoriteNa(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Oⓘ MicroclineK(AlSi3O8)
Oⓘ Monazite-(Ce)Ce(PO4)
Oⓘ QuartzSiO2
Oⓘ RichteriteNa(CaNa)Mg5(Si8O22)(OH)2
Oⓘ RutileTiO2
Oⓘ ThoriteTh(SiO4)
Oⓘ TitaniteCaTiO(SiO4)
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ ZirconZr(SiO4)
Oⓘ Fluoro-richteriteNa(CaNa)Mg5(Si8O22)F2
Oⓘ KatophoriteNa(CaNa){Mg4Al)(AlSi7O22)(OH)2
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Apatite var. TrilliumCa5(PO4)3(Cl/F/OH)
Oⓘ ApatiteCa5(PO4)3A
Oⓘ Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Oⓘ Fluoro-tremolite◻Ca2Mg5(Si8O22)F2
Oⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluorapatiteCa5(PO4)3F
Fⓘ Fluoro-richteriteNa(CaNa)Mg5(Si8O22)F2
Fⓘ Apatite var. TrilliumCa5(PO4)3(Cl/F/OH)
Fⓘ Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Fⓘ Fluoro-tremolite◻Ca2Mg5(Si8O22)F2
Fⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ Ferro-katophoriteNa(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Naⓘ RichteriteNa(CaNa)Mg5(Si8O22)(OH)2
Naⓘ Fluoro-richteriteNa(CaNa)Mg5(Si8O22)F2
Naⓘ KatophoriteNa(CaNa){Mg4Al)(AlSi7O22)(OH)2
Naⓘ Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Naⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ RichteriteNa(CaNa)Mg5(Si8O22)(OH)2
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mgⓘ Fluoro-richteriteNa(CaNa)Mg5(Si8O22)F2
Mgⓘ KatophoriteNa(CaNa){Mg4Al)(AlSi7O22)(OH)2
Mgⓘ Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Mgⓘ Fluoro-tremolite◻Ca2Mg5(Si8O22)F2
Mgⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AnniteKFe32+(AlSi3O10)(OH)2
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Alⓘ Ferro-katophoriteNa(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Alⓘ MicroclineK(AlSi3O8)
Alⓘ KatophoriteNa(CaNa){Mg4Al)(AlSi7O22)(OH)2
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Alⓘ Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Alⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AnniteKFe32+(AlSi3O10)(OH)2
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Siⓘ Ferro-katophoriteNa(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Siⓘ MicroclineK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ RichteriteNa(CaNa)Mg5(Si8O22)(OH)2
Siⓘ ThoriteTh(SiO4)
Siⓘ TitaniteCaTiO(SiO4)
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ ZirconZr(SiO4)
Siⓘ Fluoro-richteriteNa(CaNa)Mg5(Si8O22)F2
Siⓘ KatophoriteNa(CaNa){Mg4Al)(AlSi7O22)(OH)2
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Siⓘ Fluoro-tremolite◻Ca2Mg5(Si8O22)F2
Siⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
PPhosphorus
Pⓘ FluorapatiteCa5(PO4)3F
Pⓘ Monazite-(Ce)Ce(PO4)
Pⓘ Apatite var. TrilliumCa5(PO4)3(Cl/F/OH)
Pⓘ ApatiteCa5(PO4)3A
SSulfur
Sⓘ PyriteFeS2
ClChlorine
Clⓘ Apatite var. TrilliumCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ AnniteKFe32+(AlSi3O10)(OH)2
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MicroclineK(AlSi3O8)
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ CalciteCaCO3
Caⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Caⓘ FluorapatiteCa5(PO4)3F
Caⓘ Ferro-katophoriteNa(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Caⓘ RichteriteNa(CaNa)Mg5(Si8O22)(OH)2
Caⓘ TitaniteCaTiO(SiO4)
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caⓘ Fluoro-richteriteNa(CaNa)Mg5(Si8O22)F2
Caⓘ KatophoriteNa(CaNa){Mg4Al)(AlSi7O22)(OH)2
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Caⓘ Apatite var. TrilliumCa5(PO4)3(Cl/F/OH)
Caⓘ ApatiteCa5(PO4)3A
Caⓘ Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2
Caⓘ Fluoro-tremolite◻Ca2Mg5(Si8O22)F2
Caⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
TiTitanium
Tiⓘ Aeschynite-(Y)Y(TiNb)O6
Tiⓘ AnataseTiO2
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ RutileTiO2
Tiⓘ TitaniteCaTiO(SiO4)
FeIron
Feⓘ AnniteKFe32+(AlSi3O10)(OH)2
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Feⓘ Ferro-katophoriteNa(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Feⓘ PyriteFeS2
Feⓘ Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2
YYttrium
Yⓘ Aeschynite-(Y)Y(TiNb)O6
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Aeschynite-(Y)Y(TiNb)O6
CeCerium
Ceⓘ Monazite-(Ce)Ce(PO4)
ThThorium
Thⓘ ThoriteTh(SiO4)

Mindat Articles

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


Other Regions, Features and Areas containing this locality

Canada
North AmericaContinent
North America PlateTectonic Plate

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References

 
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