|
 Optically
and chemically zoned glaucophane in a blueschist, Ile de Groix,
Southern Brittany (polarized light, crossed nicols,
1
mm).
|
Glaucophane
(pale blue) with blue-green NaCa-amphibole rims in a glaucophane-eclogite,
Ile de Groix, Southern Brittany (polarized light, 1 mm).
|
