Dresserite

The quarry is located in the middle of the city of Montréal, but had been closed in 1981 and will not reopen in the future.

It is soluble in dilute hydrogen chloride, and dissolves readily with a effervescence.

[4] The measured density of the mineral, due to its fibrous nature, is too low.

The differential thermal analysis (DTA) curve of the mineral is similar to dundasite's in appearance.

When heated up to this degree, dresserite loses all of its water and carbon dioxide.