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Gibbs Creek dawsonite occurrence, Fraser River, Lillooet Mining Division, British Columbia, Canadai
| Regional Level Types | |
|---|---|
| Gibbs Creek dawsonite occurrence | Occurrence |
| Fraser River | River |
| Lillooet Mining Division | Division |
| British Columbia | Province |
| Canada | Country |
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Latitude & Longitude (WGS84):
50° 45' 14'' North , 121° 50' 18'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lillooet | 2,324 (2011) | 10.5km |
Giles Peatfield comments:
This appears to be the first recorded occurrence of dawsonite in British Columbia. It occurs in an outcrop of rhyolite in a road cut 100 metres north of the north-east portal of the CN Railway tunnel, about 400 metres south-west of the mouth of Gibbs Creek, British Columbia, in the Lillooet Mining Division. Read (2000) described this as near the mouth of Fountain Creek, but a more detailed examination of the report suggests that Gibbs Creek is a more accurate location.
I thank Prof. Allan Ingelson of the University of Calgary for bringing this reference to my attention.
Giles Peatfield Comments on the Minerals Reported:
Dawsonite: The occurrence was located by Read (2000), who described how “. . . some of the irregular joint surfaces in the pinkish felsite are coated with silky white, coalescent rosettes of dawsonite [NaAl(CO3)(OH)2] up to 3 millimetres in diameter . . . . This first occurrence of dawsonite in British Columbia was verified by x-ray diffraction, optical properties and an SEM analysis.” The Pacific Museum of Earth at the University of British Columbia has a collection of three specimens (catalogue number 4822), donated by Read. Material from this occurrence is also listed in the “Catalogue of mineral species occurring in Canada (2022) Revision 13, updated 2022 11 01, by László Horváth, (specimen HC15042) [Gibbs Creek, B.C.]”. My thanks to László for this information.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 5 - Nitrates and Carbonates | |||
|---|---|---|---|
| ⓘ | Dawsonite | 5.BB.10 | NaAlCO3(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Dawsonite | NaAlCO3(OH)2 |
| C | Carbon | |
| C | ⓘ Dawsonite | NaAlCO3(OH)2 |
| O | Oxygen | |
| O | ⓘ Dawsonite | NaAlCO3(OH)2 |
| Na | Sodium | |
| Na | ⓘ Dawsonite | NaAlCO3(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Dawsonite | NaAlCO3(OH)2 |
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