316 A. LIVERSIDGE. 
On some NEW SOUTH WALES anp otner MINERALS. 
(Note No. 7.) 
By A. LIvERSIDGE, M.A., F.R.S., 
Professor of Chemistry in the University of Sydney. 
[Read before the Royal Society of N. S. Wales, November 6, 1895.] 
ANTIMONITE—Queensland. 
A hard splintery variety, breaking with a conchoidal fracture 
with somewhat hackly surfaces; noticeable as containing silica 
and barytes in thin veins or joints. 
Analysis. 
Antimony a oe : 64°47 
Sulphur... a oth a3 aii 26°69 
Tron ... ous wi i 1-00 
Silica ao de ba bis i 
Barium sulphate... da A a) ee 
Undetermined and loss... vas leiee eee 
100-00 
The above is the mean of two analyses. Sp. gr. 4°43. 
Apatite, PLumprrerous—Calcium fiuo-phosphate. Broken Hill. 
Some specimens of apatite containing lead were forwarded 
me by Mr. 8. Harris, from Block 14 Mine for examination. 
The apatite is in the form of small grey imperfect erystals, 
(some however are symmetrical hexagonal prisms closed by the 
pyramid and terminal pinacoids) about js” long, in cavities ina 
matrix of dark blue-black honey-combed crystalline zinciferous 
galena ; the freshly fractured apatite has somewhat the lustre 
and appearance of pyromorphite. It is probable that part 
the calcium phosphate of the apatite is replaced by the isomorphous 
lead phosphate. 
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