Tourmaline
A composite, doubly-terminated crystal of schorlite, with a little limonite and crystal of apatite. From Minerals of Cornwall and Devon by P.G. Embrey and R.F. Symes, 1987 (Specimen used on page 125)
Picture No
10713372
Media ID
47594760
Size
4081px x 4433px
(17.9MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
