- clarify specific type of onyx
- This is a closed mining claim that contains some onyx. It is located in the Mount Baker–Snoqualmie National Forest so you will need to be prepared to travel on logging roads without cellular reception.
- Mount Pilchuck (Wikipedia)
Mount Pilchuck (Lushootseed: bəlalgʷəʔ) is a mountain located in Snohomish County, Washington. It is 37 miles (60 km) northeast of Seattle. It is part of the Cascade Range.