238 MINERALS FROM NEW CALEDONIA. 
The following analysis of a specimen from Baie des Pirogues 
shows the presence of nickel in rather larger proportion than 
usual. 
Water lost at 100° C. wes vei oO Mage 
Combined water, by difference ey, re 
Silica with traces of chrome iron .. 4°476 
Alu i ie oe ws. eee 
Iron sesquioxide ves vis ... 18°396 
Chromium sesquioxi is .-. traces 
Man anganete pero (ind) A ... 277588 
Cobalt o: ese via. y EEE 
ai side 2256 
Lim 3a a 2 Gee oe fe 
Maaciate aif or = $08 Tr 418 
Potash set , tes : ai "123 
Soda... ae oa ae 216 
Phosphoric acid (P,0;) ... 240 
oe 
From the peeaeing analyses it will be seen “that the earthy 
cobalt ore from New Caledonia differs considerably from those 
met with in aha places ; baryta is entirely absent, although 
given by Dana, Descriptive Mineralogy, p. 182 ), but magnesia 
seems to have taken its place in the asbolite from some of the 
New Caledonia: 
Specimen tani’ Unia of poor part 
Water lost at 100° C, ree ck... 
mbined water, by difference .. .. 22-901 
a a silica .. 1 
a oii pen. rt 
Iron 1 sesquioxide ves ave a ... 10°308 
Ceaemeen. sesquioxi xide ... traces 
Manganese peroxide (MnO,.) 16°598 
oe t oxide (CoO a a 
ic ag ge — eee = geet 
M nee laa ea 
oa a3 ish ewan eee em 
Sulphuric oda Shy Oe oe 
1007000 
Tron wd 
Vagnetite.—In theform of call very perfect octohedra di 
through massive granular chlori 
lade mine, i, an : schist, highly 
Red Hematite.—In a red-coloured micaceous on for 
charged with ste of iron, and in consequence often a 
