Introduction: rosiaite is a very rare secondary mineral named after the town where it was discovered in Italy. Rosiaite forms in association with other secondary antimony species, including bindheimite, in oxidized antimony deposits dominated by primary stibnite.

Occurrence in Wales: the mineral which, was to be later named rosiaite was discovered by G. Ryback in 1985 on a specimen collected by himself in 1955 from Bwlch Mine near Deganwy in Gwynedd. However, identification of this phase which, occurs as a very thin, light orange-brown crust coating stibnite and buff coloured cellular bindheimite, defied identification by both IR and X-ray powder analyses during the 1980’s. In 1996 when, the new mineral rosiaite was described (Basso et al., 1996) it was noted that a match was made with the Bwlch Mine material (Ryback & Francis, 2001).

Last saved full search

Alphabetical search:

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z