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Pednaud Mine (Pedneaud Quarry), L'Ange-Gardien, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canadai
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Latitude & Longitude (WGS84):
45° 41' 44'' North , 75° 27' 32'' West
Latitude & Longitude (decimal):
Type:
Deposit first discovered:
1895
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Val-des-Monts | 9,539 (2016) | 16.9km |
| Thurso | 2,476 (2008) | 19.4km |
| Clarence-Rockland | 20,790 (2010) | 20.8km |
| Fallingbrook | 25,000 (2019) | 24.5km |
| Cantley | 10,412 (2018) | 28.9km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Eastern Ontario Natural History Society (EONS) / Ottawa Paleontology Club | Ottawa, Ontario | 36km |
| Ottawa Lapsmith and Mineral Club | Ottawa, Ontario | 36km |
Other/historical names associated with this locality:
Pedneaud; Pedneau
Formerly the Pedneaud Quarry, L'Ange-Gardien, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada.
Please note that in literature, the locality name has often been misspelled as Pedneaud, or Pedneau, but the true name is Pednaud.
The workings of this mine in granitic pegmatite, still visible today, are pits dug in the slope of a hill.
The following was taken from the Deposit File of the MRNF (Ministère des ressources naturelles et de la faune) :
History: Discovered in 1895, a Charles E. Pearson dug two excavations. From 1910 to 1937, G. Pednaud opened and worked the mine for the production of feldspath and silica. From 1941 to the sixties, worked intermittently by various operators.
An amphibolite and a feldspath-biotite gneiss are cut through by a pegmatite composed of quartz, microcline, albite, and muscovite. This pegmatite was formed by late hydrothermal injection, and many subsequent hydrothermal replacements facilitated the growth of large crystals.
This deposit is in the form of a dyke some 450 meters long, with a width varying from 7,5 to 40 meters. Its mineralization is massive. Muscovite phenocrysts reaching 45 cm are found in cavities.
And, the following description was taken from the document "RP 444 - Preliminary Report..." (see references):
"A nearly vertical pegmatite dyke about 100 feet (ca. 30 m) wide is exposed on a steep hill for a slope length of about 1500 feet (ca. 457 m). The principal minerals are buff to pinkish microcline, greenish white albite, quartz, and a considerable amount of muscovite. The dyke has been opened by two major cuts, one some 200 feet (ca. 61 m) above the other. The lower cut is about 300 feet (ca. 91 m) long and from 20 to 80 feet (6 to 24 m.) wide. It has been worked in several benches."
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) |
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chabazite-Ca Formula: (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| ⓘ Chamosite Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| ⓘ 'Chlorite Group' |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ 'Feldspar Group' |
| ⓘ Fluorite Formula: CaF2 |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ 'Hornblende Root Name Group' Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ 'Mica Group' |
| ⓘ 'Monazite Group' Formula: REE(PO4) |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Rutile Formula: TiO2 |
| ⓘ Thorite Formula: Th(SiO4) |
| ⓘ Thorite var. Uranothorite Formula: (Th,U)SiO4 |
| ⓘ 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z |
| ⓘ Uraninite Formula: UO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| ⓘ | Uraninite | 4.DL.05 | UO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| Group 9 - Silicates | |||
| ⓘ | Thorite | 9.AD.30 | Th(SiO4) |
| ⓘ | var. Uranothorite | 9.AD.30 | (Th,U)SiO4 |
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Chamosite | 9.EC.55 | (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| ⓘ | Chabazite-Ca | 9.GD.10 | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Monazite Group' | - | REE(PO4) |
| ⓘ | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
| ⓘ | 'Mica Group' | - | |
| ⓘ | 'Hornblende Root Name Group' | - | ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Chamosite | (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| H | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| B | Boron | |
| B | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chamosite | (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Monazite Group | REE(PO4) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Thorite | Th(SiO4) |
| O | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | ⓘ Uraninite | UO2 |
| O | ⓘ Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| O | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
| O | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | Fluorine | |
| F | ⓘ Fluorite | CaF2 |
| F | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Na | Sodium | |
| Na | ⓘ Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Mg | Magnesium | |
| Mg | ⓘ Chamosite | (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| Al | Aluminium | |
| Al | ⓘ Chamosite | (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Al | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Si | Silicon | |
| Si | ⓘ Chamosite | (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Thorite | Th(SiO4) |
| Si | ⓘ Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Si | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
| Si | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| P | Phosphorus | |
| P | ⓘ Monazite Group | REE(PO4) |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Pyrite | FeS2 |
| Cl | Chlorine | |
| Cl | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | ⓘ Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| Ca | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | ⓘ Rutile | TiO2 |
| Fe | Iron | |
| Fe | ⓘ Chamosite | (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Pyrite | FeS2 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Th | Thorium | |
| Th | ⓘ Thorite | Th(SiO4) |
| Th | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
| U | Uranium | |
| U | ⓘ Uraninite | UO2 |
| U | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
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