1918 ] The N.Z. Journal of Science and Technology. 367 
“ At Mount Pring, near Bowen, the magnesite occurs on the steep sides 
and tops of the spurs leading down from the mountain, and many scores 
of tons of the mineral are to be seen as loose masses on the slopes where 
they have been weathered out of a decomposed red rock. Veins of the 
mineral are exposed in all directions, and without a careful examination 
no estimate could be made of the tonnage available. 
“ All the magnesite occurrences referred to above are in serpentine or 
serpentinous schists, and are occasionally found to be associated with diorite 
intruding the serpentine. Deposits also occur in black soils resulting from 
the decomposition of the olivine basalts, of which the Toowoomba magnesites 
are examples. 
“ Table A.—Typical Magnesite Analyses. 
Localities. 
Water. 
Carbon 
Dioxide. 
Silica and 
Insoluble. 
Iron and 
Alumina. 
Magnesia. 
Lime. 
Carbonate 
of 
Magnesia. 
Mount Pring, near Bowen, Q. 
51-72 
0-90 
Nil . 
46-00 
1-18 
96-20 
(a) Kunwarara, C. Q. 
0-26 
46-70 
8-00 
1-50 
43-40 
0-10 
90-00 
(b) Kunwarara, C. Q. 
0-10 
50-30 
2-10 
0-50 
46-80 
Trace 
97-10 
Princhester Creek, C. Q. 
0-10 
51-30 
0-20 
0-20 
46-90 
1-50 
98-20 
Ironpot Mountain, C. Q. 
49-08 
7-23 
1-66 
43-70 
Trace 
91-78 
“ Dolomite is a carbonate of magnesia containing 55 per cent, of 
carbonate of lime and 45 per cent, of carbonate of magnesia (= 22 per cent, 
of magnesia), but often with an excess of carbonate of lime sufficient to 
constitute a magnesian limestone. On the other hand, an abnormal amount 
of magnesium carbonate would grade it into a calcareous magnesite. 
The Flinders dolomite occurs over- an area of about five square 
miles, and an immense quantity of the stone is exposed on hills and in 
watercourses. Some of the dolomite is white, compact, and nodular, 
other portions being friable and clay-like. Both varieties in some places 
are free from iron, alumina, and silica; while in other areas the outcrops 
are very siliceous and chert-like. The analyses of a number of samples are 
given in Table B. 
“ Table B. —Flinders Dolomite Analyses. 
1 . 
2 . 
3 . 
4 . 
5 . 
6 . 
Lime 
24-3 
30-4 
28-4 
26-2 
25-9 
29-5 
Magnesia 
20-7 
20-5 
16-9 
18-0 
20-9 
21-2 
Iron and alumina 
2-6 
1-6 
1-2 
4-2 
2-6 
1-7 
Silica 
8-6 
0-8 
9-6 
7-9 
5-9 
0-4 
Loss on ignition 
41-7 
46-3 
40-8 
40-3 
43-1 
46-3 
Moisture .. 
2-1 
0-4 
3-1 
3-4 
1-6 
0-9 
“References to Table B : (1) Portions 11-17, Mclvor’s Quarry, half a mile south- 
south-east of Flinders Railway-station ; (2 and 3) Portion 188a, two miles south of 
station ; (4) Portion 189, two miles south-east of station ; (5) Portion 99, at north¬ 
eastern corner, about two miles and a half southerly from station ; (6) Portion 102, near 
house on road south of station. 
“ The analyses of the Ipswich dolomite, from preliminary tests, appear 
to be similar to those of the Flinders stone, with a tendency, however, to 
