I. Penig, Saxony. 
> Mean. 
296 iS. L. Penfield—Chemical Composition of Amblygonite. 
& sag an. Relative number of atoms. 
P.O, 4835 4813 48°24 P ‘678 1° 
AiO, 3850 33°60 3355 Al ‘651 96 
Ti. .BOy.,. OPE 807 ..Li BOS) gos gh 
Na,O 206 203 204 Na ‘066 
MnO, ‘12 15 18 
1°75 1°75 OH Si: 
FE 11-26 tag at tsi 
105°94 
O equivalent of F 4°74 
101°20 
IL. ee aes variety A. G,=3°088. 
Me Relative number of atoms. 
P.O, “ir 10 47-07 4709 P_ ‘664 1 
ALO, 33°20 38°25. 83°22 Al °646 97 
Li, 793 790 792 Li 528 
Na,O 3°48 rie 3°48 Na ‘112 > 649 ‘98 
CaQ “25 24 24 Ca ‘009 
H,O 2°25 2°29 2°27 OH ei 
y 1900 one” sis OP , bs eles 
; 10415 
O equivalent of F 4°02 
100°13 
atthe nme tke nae G.=3°059. 
Relative number of atoms. 
P.O Pr 56 is-26 ewe “48 fr Gee x, 
Al,O, 33°67 33°90 33-78 Al ‘656 96 
Li,O 9-49 9°42 9°46 Li 630) g¢9 -97 
Na,O "96 1°02 “99 Na 2 
oe 6°26 615 6°20 F 6 
: 102-48 
O equivalent of F 2°61 
99°87 
‘Iv. Hebron, Maine, poriety A, : 
lative number “ sie 
P.O, By difference [48°53] "682 
ie 34°12 Al -662 "91 
9°54 Li +636). 
1) 34 Na ° 10 ¢ -cgeeois 
F = “ae 493 ot 19 1°18 
deer aa was accidentally lost before a phosphoric ee 
frp mane g9 
It is inserted because it 1s 
regarded 
good an d it varies somewhat from the other sam 
ris from Gaan which was obtained to Pai it. 
