IGNEOUS AND CRYSTALLINE ROCKS. 69 
N. Banakite dike, near head of Stinkingwater River. Monzonose. Like M, but 
with more serpentine. Analysis by W. H. Melville, record No. 1232. 
81 - 83 71 
63 - 86 81 
10 ek? 03 
ratsiotaiats Ciheartiveis a -14 
DO Me stare viecllirsedie stars 
100.10 | 100.38 | 100.31 
Q. Leucite banakite lava sheet, southeast fork of Beaverdam Creek. Shoshonose. 
Overlies rock G. Contains olivine, augite, leucite, feldspars, magnetite, apatite, 
and a little brown mica. Analysis by Eakins, No. 1378. 
P. Earlier analysis of O, another sample, by J. E. Whitfield, record No. 907. 
Q. Quartz banakite dike, near head of Stinkingwater River. Monzonose. Con- 
tains plagioclase, orthoclase, quartz, biotite, magnetite, augite, and a little calcite. 
Analysis by Melville, No. 1232. 
R. Quartz banakite dike, near Q. Pulaskose. Contains plagioclase, orthoclase, 
quartz, biotite, magnetite, augite, chlorite, and serpentine. Analysis by Melville, 
No. 1232. 
e) Pp Q. R 
52.93 | 51.56 | 57.29 60 89 
19.67} 21.00 | 18.45 17.14 
3.07 5.17 4. 38 3 32 
3.50 2.76 1,20 95 
2. 88 2. 52 2.08 1.16 
4.69 4. 83 3.57 3.58 
4. 20 4.37 4. 43 4.54 
Kgs i222 ea beses 2 aeacoknes Maeeiee weet Semacaeaetg eee eereinainces 4, 75 4.13 5. io 5. in 
FO AG 1007s 2 ciaceigpctistaesmicae wecrepecee et ‘ 3 
H20 above 100° } 273 lh 227) ool) be 
TiOe. 72 65 sel 49 
P20s- 59 69 46 27 
MnO. 15 | trace | trace 09 
IN IO oetcciotes oxea nctessicn: 23s icinteartaapicis sis sierepasuisicrs 2 SRS M I aGeS Paced obeterne rg fe|oe dodeneesinaees ob? 19 
BGO acces peerieracm i aga autos re menmisten avancmmanks ) Pat seataeese ans QUA east seed evieGres| nebo g 
Tyg espace & secterciartae eweeemean yas nei touectotage ht aatincecinieeeee voleg TERE HS Aa SAGO Ak eee peeee ret 
BO gies d cscesscininieeicicn cag = la es See Se AR eReMinneniee eee demUR NaS Heee/ ee Seles WAL Wiss sch imree|ae aececel 
CU does seouatesassie:dngon sus gbsis a: 2s cicihaiuicasis Bs Dis Aeee aes Se pr ea emc is te Sette de erecta s tes lcs giana ETACE: | s.csciereicnacs | eiseemeense 
100.09 | 100.29 ; 100 31 99. 94 
S. Absarokite, Two Ocean Pass, Kentallenose. Contains augite, olivine, ortho- 
clase, magnetite, serpentine, little biotite, apatite, and an isotropic substance, prob- 
ably glass. Analysis by J. E. Whitfield, record No. 906. 
T. Shoshonite, Beaverdam Creek. Shoshonose. Analysis by Whitfield, No. 907. 
Probably the rock already represented by analysis G. 
U. Shoshonite, northeast spur of Sepulchre Mountain. Shoshonose. Contains 
augite and serpentinized olivine, in a groundmass of plagioclase, orthoclase, augite, 
magnetite, and apatite. Analysis by Whitfield, No. 908. 
V. Shoshonite, Baldy Mountain, Bear Gulch, Montana. Shoshonose. Contains 
hypersthene, augite, olivine, plagioclase, orthoclase, and magnetite. Analysis by 
Whitfield, No. 909. 
15619—Bull. 419—10 —6 
