Figs /and2z Coarse olirine-deabase or olivine-gabbro fram French 
River Ainnesota 
Pgs or @inary Zug ht 
Scale 25 @tameters 
Pug2z polarized leg ht. 
Olzrine (z/, wnaoréAzte (2/, Le allagec augele (3/ 
Sce POSESELAE/ 
fig ¥ Coarse olir2 ne-drabase or olivine-passro Srem 
north shore Lake Superzor, near Sucker Hrver, Alen 
Seale 26 deamelers. Ordinary aught. See 2p xiend7 
Ole rexey/; arnorthile(2); diallagee augite(t), Lelan rferout 
magnetrle W/; Greex alteration prodrect oY odexe ne (S/ 
Pig 4. Zarge olivines from same rock as shown wn Figs andes 
Scale 28-@zamelers. Ordinary lrght. Jee ZR 7, 281 
These oderznes ald appear as of cate x, or morn, only porleanrs 
are enteredy fresh (Wy they are traversed ay refts(2/; along 
whicek there te an alteraliow to serpentene(W, and ~ 
oxzde of zrow (4, both of whr~ek alleretzon products 
agro exten® aray rem the cracks. 
