24 
saloon, and the common scapolite (called also wernente , 
N" it Hi st a ^ ter t ^ ie ^ ate illustrious professor of Freiberg) ; 
the talc-like scapolite (micarelle of some authors), 
&c; the bergmannite, and the fettstein of Werner 
are related to these.—Distinct from these is the 
Sodalite, from Greenland; and a new concomitant 
substance, the Eudialyte of Stromeyer, composed 
chiefly of silica, zirconia and soda.—More closely 
allied to feldspar is the substance from Krieglach in 
Tyrol ( blauspath., Wern.), which was formerly 
considered as a variety of compact feldspar; near 
which is placed the azurite of Vorau and of Salz¬ 
burg, massive and crystallized.—In this table-case 
also begins the suite of specimens of feldspar, which 
is continued in the next case; specimens of com¬ 
pact feldspar, among which are, the red variety from 
Sweden, frequently mistaken for hornstone; the 
weiss-stein of Werner ; the felds path compact e 
tenace of Haiiy, which is the same as the jade of 
Saussure, called by some saussurite, &c. 
(Case 12.) In this glass case are deposited the dif¬ 
ferent varieties of the Labrador feldspar, the naker- 
feldspar, or adularia, and the common feldspar.— 
Among the specimens of Labrador feldspar (more 
properly called opalescent feldspar, being remark¬ 
able for the beautiful play of colours which it exhi¬ 
bits) are several from the transition syenite of Laur- 
wig in Norway.—The adularia (which stands in 
the same relation to common feldspar, as rock cry¬ 
stal to common quartz) is principally found on 
Mount 
