332 PROCEEDINGS OF SECTION B. 
No. 7.—NOTES AND ANALYSES OF SOME NEW SOUTH 
WALES PHOSPHATIC MINERALS AND PHOS.- 
PHATIC DEPOSITS. 
By Joun C. H. Mineaye, F.C.S., Analyst to the New South 
Wales Department of Mines. 
(Read Saturday, January 8, 1898.) 
(1.) Pyromorphite from Braidwood, near Little River :— 
Chemical Composition. 
Lead oxide (PbO) ... aap se 69-40 
Metallic lead (Pb) ... a ee 6°57 
Phosphoric acid (P,O;) —... hs 15:22 
Vanadic acid (V,O;) ene Se trace 
Chlorine (Cl) mils cis 2°26 
Ferric oxide (Fe, ony ae Nd 62 
Lime (CaQ)... , te trace 
Tnsoluble in acids (Gangue) ay. 4-67 
Moisture... — see fae ‘S86 
99-60 
No gold or silver detected. 
(2.) Apatite Crystals from Gordonbrook : 
Chemical Composition. I. II. 
Lime (CaO) Rk Ne ee 48°73 48°63 
Calcium (Ca)... dc 3°81 3°82 
Phosphoric acid (P.O, cin ee 41-22 41-11 
Chlorine (Cl)... she nase 1:28 1:32 
ivorime: (Ely =... x ae 2°86 2-92 
Magnesia (MgO) a Nee pL) “21 
Ferric oxide (Fe, °:) Sac a ‘76 ‘72 
*Gangue : eae aCe 133% HN .45) 
Water a BGs ae ies 29 -29 
100°46 100:27 
+ Mr. Geo. W. Card, A.R.S.M., F.G.S., has described the 
mineral as occurring in pinkish-white crystals, associated with an 
actinolitic substance, in narrow veins traversing granite. 
* The gangue was found to consist of silica, alumina, ferric oxide, lime, magnesia, and a 
minute trace of phosphoric acid. 
+ Records of the Geological Survey of New South Wales, vol. v, Part II, 1897. 
