H. H. Hayden. 
GEOLOGICAL SURVEY OF INDTA 
Memoirs, Vol. XXXVI, Pt 2, PI, 14 
Fig. 1. Granite from Lhasa 
hb. Hornblenile 
or. Orthoclase 
(fu. Quartz 
ap. Apatite 
bi. Riolite 
sf>. Sphene 
mg. Miignetite 
Fig. 2. Granite from Lhasa 
hb. Twinned crystal of hornblende 
bi. Biotite 
//. Plagioclase 
or. Orthoclase 
pe. Perthite 
Fig. 3. Granite from Chushul, 'I'sangpo R. 
mc. Micnicliiie 
Fig. 4. Lhasa Granite (same slide as fig. 1 ) 
ca. Calcite 
or. Parts of a single crystal of orthoclase 
sp. Sphene qu. Quartz 
ep. Epidote //. Plagioclase 
