264 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
JADEITE. 
The following analyses of jadeite, all by F. W. Clarke, were discussed by Clarke: 
and Merrill in the Proceedings of the United States National Museum for 1888. They 
all represent worked material. 
A. Light-colored bead, mottled with Sinerala green, from State of Oaxaca, Mexico. 
Sp. gr., 3.007, determined by William Hallock. 
B. Carved head, light green, from Zaachita, Oaxaca. Sp. gr., 3.190, Hallock. 
C. Fragment from Sardinal, Costa Rica; pale green, translucent. Sp. gr., 3.32, 
Clarke. 
D. Fragment from Culebra, Costa-Rica; light green, granular, opaque; quite im- 
pure. Sp. gr., 3.27, Clarke. 
Ignition. 
100.01 | 100.56 | 99.81 99.69 
WOLLASTONITE. 
Compact variety, from Diana, New York. Partial analysis by E. A. Schneider: 
SiO. nescncsemsedaeagobscesaasenoauoecwas sans 50:05: || Miz Ok sieved Arce jeune demu aeeeremeemen ane 09 
ANNs O gin sisacictcictiuar tine wale racncissessie ciessie slegisicotn se | 1.13 Os comcamanieas sarang en seasOieeweedocne saxens 45 
Bej0 92 sce s cece cicesecedaiesemey ye dees : 08. 82 
CAO) a en ciavae coer cdewsanbarearee ten iatin 47.10 : 
PECTOLITE. 
A. Stone hammer, at first supposed to be jade, collected among the Eskimo of Point 
Barrow, Alaska. Analyzed by F. W. Clarke, and described by him in Bull. 9. Pale 
apple-green, tough, compact, highly polished. Sp. gr., 2.873. 
B. Radiated pectolite from Bergen Hill, NewJersey. Analyzed by E. A. Schneider. 
C. Another sample from Bergen Hill. Analysis by George Steiger. 
AMPHIBOLE. 
A. Tremolite, pseudomorphous after sahlite; northeast slope of Canaan Mountain, 
Connecticut. Analysis by W. F. Hillebrand. 
