Rectorite, (Na,Ca)Al4(Si,Al)8O20(OH)4.2H2O, (smectite group), 10,5cm
"Mountain leather", "Bergleder", "Cuir de montagne"
La Table, Savoie, France
Photo and coll. P. Perroud
(now in NHM Geneva).
A T H E N A |
Rectorite, (Na,Ca)Al4(Si,Al)8O20(OH)4.2H2O, (smectite group), 10,5cm
"Mountain leather", "Bergleder", "Cuir de montagne"
La Table, Savoie, France
Photo and coll. P. Perroud
(now in NHM Geneva).