170 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
C. Metagabbro, southeast slope of Panther Mountain. Hessose. Much altered. 
Contains plagioclase and pale-green fibrous hornblende. Fine scales of mica and 
groups of epidote are also common. 
D. Normal metagabbro, summit of Bald Mountain. Auvergnose. Contains plagio- 
clase, hornblende, numerous grains of magnetite or ilmenite, and traces apparently 
of pyroxene. 
E. Gabbro, Brush Creek, 14 miles southwest of Bald Mountain.  Yellowstonose. 
Rich in quartz and feldspar, with subordinate biotite and hornblende. Contains some 
chlorite. 
F. Gabbro, west of Brush Creek, near summit of Mussel Creek divide. SR. 5 of 
kilauase. Chiefly feldspar and pyroxene, the latter partly changed to hornblende. A 
little quartz is present. 
G. Gabbro, left bank of Rogue River, 2 miles below the mouth of Illinois River. 
SR. 5 of monzonase. Consists mainly of plagioclase and hornblende. 
H. Basalt, Cedar Creek, 13 miles northeast of Ophir. Auvergnose. Consists mainly 
of hornblende and feldspar. Grains of pyroxene are present, and a black dust which 
appears to be magnetite. 
I. Basalt, near fork of West Bend trail, 24 miles south of Johnson Creek. Beer- 
bachose. Contains plagioclase and pyroxene, with secondary chlorite and hornblende. 
