Log In
Mont Lyall Agate Mine, La Haute-GaspĂ©sie RCM, GaspĂ©sie-Ăles-de-la-Madeleine, QuĂ©bec, Canadai
| Regional Level Types | |
|---|---|
| Mont Lyall Agate Mine | Mine |
| La Haute-Gaspésie RCM | Regional County Municipality |
| GaspĂ©sie-Ăles-de-la-Madeleine | Administrative Region |
| Québec | Province |
| Canada | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
48° 48' 18'' North , 66° 5' 6'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Sainte-Anne-des-Monts | 5,602 (2016) | 46.3km |
Name(s) in local language(s):
Mine d'agates du Mont Lyall
The Mont Lyall Agate Mine is a dig-for-fee site, in the Chic-Choc Mountains, in central Gaspe Peninsula, in the Quebec Appalachians.
Agate thunder eggs and geodes lined with smoky quartz, clear quartz or amethyst crystals are found in rhyolitic flows that have been altered to green clay.
Some geodes contain botryoidal chalcedony (blue chalcedony, carnelian, etcâŠ), sometimes coated with druzy quartz.
Mt Lyall is an ancient volcano, formed in the Devonian epoch.
It is part of an igneous complex known as the "DĂŽme de Lemieux".
Felsic porphyry is found at the top of the mountain, basalt in the middle part, and red porphyritic rhyolite at the base.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
2 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| â Calcite Formula: CaCO3 |
| â Quartz Formula: SiO2 |
| â Quartz var. Agate Formula: SiO2 |
| â Quartz var. Amethyst Formula: SiO2 |
| â Quartz var. Blue Chalcedony Formula: SiO2 |
| â Quartz var. Carnelian Formula: SiO2 |
| â Quartz var. Chalcedony Formula: SiO2 |
| â Quartz var. Smoky Quartz Formula: SiO2 |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| â | Quartz var. Agate | 4.DA.05 | SiO2 |
| â | var. Amethyst | 4.DA.05 | SiO2 |
| â | var. Chalcedony | 4.DA.05 | SiO2 |
| â | 4.DA.05 | SiO2 | |
| â | var. Smoky Quartz | 4.DA.05 | SiO2 |
| â | var. Carnelian | 4.DA.05 | SiO2 |
| â | var. Blue Chalcedony | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| â | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | â Calcite | CaCO3 |
| O | Oxygen | |
| O | â Quartz var. Agate | SiO2 |
| O | â Quartz var. Amethyst | SiO2 |
| O | â Calcite | CaCO3 |
| O | â Quartz var. Chalcedony | SiO2 |
| O | â Quartz | SiO2 |
| O | â Quartz var. Smoky Quartz | SiO2 |
| O | â Quartz var. Carnelian | SiO2 |
| O | â Quartz var. Blue Chalcedony | SiO2 |
| Si | Silicon | |
| Si | â Quartz var. Agate | SiO2 |
| Si | â Quartz var. Amethyst | SiO2 |
| Si | â Quartz var. Chalcedony | SiO2 |
| Si | â Quartz | SiO2 |
| Si | â Quartz var. Smoky Quartz | SiO2 |
| Si | â Quartz var. Carnelian | SiO2 |
| Si | â Quartz var. Blue Chalcedony | SiO2 |
| Ca | Calcium | |
| Ca | â Calcite | CaCO3 |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Piedmontia DomainDomain
- Quebec basinBasin
- Taconic ArcVolcanic Arc
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
Mont Lyall Agate Mine, La Haute-GaspĂ©sie RCM, GaspĂ©sie-Ăles-de-la-Madeleine, QuĂ©bec, Canada