Mineralpedia Details for Cannonite

Named to honor amateur mineralogist Benjamin Bartlett Cannon, who was the first to recognize the species. Cannonite is a rare mineral that can be found as an alteration product in copper-bismuth-gold sulfide deposits. The type locality is at the Tunnel Extension No.2 mine in Utah, USA, however newer localities have been found in Canada, Norway Italy, Hungary, France, Austria, the Czech Republic, Japan, and Australia. Minerals associated with Cannonite include covellite, cuprobismutite, bismuthinite, and quartz.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/cannonite.pdf

Formula

Bi₂O(SO₄)(OH)₂ 

Crystal System

Monoclinic 

Cleavage

None, None, None 

Luster

Adamantine 

Color

colorless 

Streak

white 

Class

Monoclinic - Prismatic 

Fracture

Brittle - Conchoidal 

Hardness

4 

WebMineral

View Cannonite 

Mindat

View Cannonite 

Clear glassy, prismatic tiny crystals in a tiny vug. Cannonite was first described in 1992 in Mineralogical Magazine by Stanley et al.