MINERALS. 2638 
0. Augite from basalt, 6 miles northeast of Grants, Mount Taylor region, New 
Mexico. Analysis by T. M. Chatard. 
P. Pyroxene from peridotite, east of Fort Eilis, Montana. Partial analysis by F. W. 
Clarke. 
Q. Pyroxene from basalt, east side of Bozeman Creek, 2} miles southeast of Boze- 
man, Montana. Described by Merrill, Proc. U. S. Nat. Mus., vol. 17, p. 637. Analy- 
sis by L. G. Eakins. 
R. Jeffersonite from Franklin Furnace, New Jersey. Analyzed by W.F. Hillebrand 
and described by him in Bull. 167. 
8. Jeffersonite, Parker mine, Franklin Furnace, New Jersey. Collected by C. 
Palache. Analysis by G. Steiger. 
T. Manganese pyroxene, Sterling Hill, New Jersey. Collected by C. Palache. 
Analysis by W. T. Schaller. 
R 8. T 
SiQ gcc conse sus savacneeer ee yyenseeeece tees eeesyscegus ce apeempeeneeereegedieaees 51.70} 49.03 49. 80 
Alo O gave nscedancccman salsa ie seeise ns mE eee EEE eEcaaeS eae SEE ek ERETEOeES .86 26 
Fe03.. 37 4.22 1.46 
RO ON oot a oni sage ricise a alstiadiaiains ons aoe ease eee ence ela see ice coe tia 8 | cess 3.95 1.61 
MnO 7.43 7.91 9.69 
MgO 12. 57 5.81 12.35 
CaO. 23.68 | 19.88 21.07 
LINN rs as es are ders rc oie eR rare aia seine ra eee Mare Se See atc aoa ove 3.31 7.14 trace 
N2QO ai se cteariceisieteeiisaaanccewemaceccaemaeacenteeekias sass eoheEMceeeeemees oh Heeicns as 09 
K0....... merci adecat a a:chaislogiesmmmareeavs thace:sesseeslleeneens 
H20 at 105°....... nue — otro eins gia wiercisieiajainieseiaraiahs \ 65 -60 1.55 
H20 above 105°... I ses deheva ings areas shalersivisloieeineteictetinera -70 1.31 
COsscsncesaeeaves avenues ayes Setiskeerareh Pemems| pewaiecsnaleumenets 43 
31 
99. 93 
13 
99. 80 
ZEGIRITE. 
Analysis by George Steiger. 
H,0 at 100°..... 
H,0 above 100° 
