RM3172 Beaverite-(Cu) and osarizawaite
Yellowish-green aggregates of beaverite-(Cu), accompanied by globular groups of green osarizawaite crystals. From this classic Spanish mine.
Size: 5.2 x 4.6 x 3.2 cm.
Found in ±1998.
Col. J. Viñals, Col. E. Nicolau.
RM3103 Cordierite and almandine garnet
In this specimen we can observe several almandine garnet crystals included in a matrix with violet-blue cordierite crystals, the pleochroism of which can be observed on the edges. The specimen belonged to the Peter Seroka collection.
Size: 6 x 5.7 x 4.7 cm.
Col. P. Seroka #601
It shows Pleochroism
RM542 Mottramite
A very rich mottramite specimen formed by a layer of minute crystals, very brilliant and with a deep olive green color, near to black on druses, visible only in isolated crystals. A really representative specimen from a classic Spanish gold mines locality.
Size: 7,3 x 6,5 x 3,8 cm.
Ex-col. C. Rewitzer.