Canada
Sources:
British Columbia (B.C.)
- Black Dome
- Enderby Cliffs
- Haida Gwaii (aka. Queen Charlotte Islands)
- Skeena
Quebec
- Mt. Lyall
- Mt. Squaw
- Mt. Tuzo
Nova Scotia
- Cobequid Uplands
British Columbia (B.C.)
Black Dome
size:
The finding area is mainly located on the Empire Valley Ranch. The Black Dome thunderegg can be found south of 'Black Dome', that means southwest of Gang Ranch in the Cariboo District. The geology is mainly rhyolithic but also dacitic tuff, breccia and flows. The vulcanic activities had been in the Eocene and in younger periods.
This specimen shows some broad level banding and a typical nice shell pattern.
Haida Gwaii
size: 100x102 mm
The thundereggs of Haida Gwaii are pretty rare but also quite unique. The shell is greyish in color and full of sparkles. Thisone shows some nice water level filling with whie opal
too.
Québec
Mt. Lyall
size:
The Agate Mine of Mount Lyall (Mine d'Agates du Mont Lyall) is located on the Gaspé peninsula south to lake Sainte-Anne. The geology is a vulcanic outcrop of about 350 MYA which produced agate, amethyst, quartz, carnelian and jasper.
A nice cluster-like egg with several eggs grown together showing one large agate picture.
Mt. Tuzo
size:
A rather new location is not 20 kms far from Mt. Lyall: Mt. Tuzo.
A slice with both sides polished showing a big nearly star-shaped agate filling.
size:
A typical thundergg from Mt. Tuzo with dark matrix and blueish agate.