Alumina 16°40 . 
Tron tae ee 7°86 , bil 
Pt protoxide . trace 
anganese protoxide........... Paps te : “Sl 
Lime P gear 3°88 ; 
Magnesia trace 
6s Potash ‘ 3°16 
4°19 Z 
100°57 = 
For micro-photographic section see plate V, fig. 2. c2 
Syenite, Reevesdale , Bungonia.—A dark-green compact rock. : 
Collected | by the late Drokeguoe A, M. Thomson, D,Se. ie 
Specific gravity = 2-64. : “a 
Analysis. "7 
Silica 66°S876 
Alumina 19640 
Tron sesquioxide 4-060 
feng protoxide..: : % 
ese protoxide .. sab aroueecee - 
ec eae 1471 ee 
tach 2-677 eee 
Soda 4°887 vite 
99°799 i. 
See plate VI, fig. 7. | Ke 
Quartz P, 
orphyry, Lumle ey Creek, County Argyle.—Dark grey, 
ye scattered crystals of hornblende. Collected by the late 
A. M. te aor D.Sec., who states that it underlies a 
limestone. 
| Specific gravity = 2-67. 
Analysis. 
“oe. 67°714 
a e a 
reise eae uae 4 
” says traces 
eer apa see eeeeneene of , 
= 2°857 
Potash’ 2-920 
Soda 3230 
99°719 
