232 MINERALS FROM NEW CALEDONIA. 
large number of specimens from different deposits in New 
Caledonia and especially of the one named NVowmeaite ; the variety 
known as Garnierite does not appear to be at all abundant, nor does 
it appear to be of much importance tothe mineralo 
Both varieties lose a portion of their combined waters when 
heated to 100°C.; the amount is variable in different specimens. 
Noumeaite. —N o crystallized specimens appear yet to have been 
ance of some be regarded as such ; it occurs in massive Leer in 
botryoidal and stalactitic forms, as incrustations with smooth mam- 
millated surfaces, in brecciated masses, as eos cementing mateiitel 
serpentine | breccias, arg as tions, in the massive form with 
the mineral split 
polished concave-convex oben which fit into one another somewhat 
like the petals of an unopened flower-bud ; this kind of structure 
is very often seen in mineral veins of all kinds and in their walls 
also where there is a slickenside or miroir. Occasionally it is found 
sinlachite: in a and effect. At the Paris Exhibition of 8 
Messrs. 
In ostous it is met with of various “shade of —_ from ~ 
very palest tinge, through apple green to a full ri h malachi 
green ; the very pale varieties apparently seem to be > othingwo 
than a , hydrated silicate of magnesia more or less chai 
: not hard, are 
from their great toughens extremely difficult to powder. side 
One specimen of noumeaite from Mont d’Or passes on One 
into a layer of pale green jade like mineral breaking bere “a 
ore 
_ ing fractur con- 
otherwise resembling jade. This layer had apparently been _ ofa 
slickenside. 1 have not yet had time to examine the specimen of 
Some specimens have been found to contain minute trac? 
copper. 
The following analyses, numbered from 1 to 7, were a 
sets of specimens which I nea carefully freed rom the matt ‘a 
oon sets were prepared so as to ascertain how wand from te 
resembling one another in fer eg and a appearance, cs 
same mine, differed from one another in chemical wndertake 
Dr. Leibius, of the Mint, Sydney, was kind enough to 
the analysis of one set of these specimens. : 
