Johann Gottlob von Kurr
28 x 19 cm
Potash from St Gotthard, Switzerland (1), apple green or Amazon stone from the
Urals (2) common feldspar or orthoclase from the Fichtel Mountains (3),
adularia (4) and sodalite (5) from Zillerthal, Austria, green porphyry feldspar
from Greece(6), black porphyry from Sweden (7), red antique porphyry from Egypt
(8), Labrador feldspar from Canada (9-10), Pennine or talcose mica from Wallis (11),
common or bi-axial mica from Norway (12), black potash mica from Vesuvius (13),
ripidolite or prismatic chlorite from Tyrol (14), talc from Piedmont (15) with
granite from Baveno, Italy and red granite from Aswan, Egypt.

