74 VICTORIAN MINERALS,—CASE XIII. 
formation near Point Addis, Geelong, to such an amount (over 50 per 
cent.), as to render it probably of commercial importance. 
have the appearance of a yellow sandstone. 
(formerly of the Geological Survey), the discoverer 
Mr. R. Daintree 
The beds 
An analysis of a sample, by 
of the deposit, gave the following results :— 

Sulphuric acid ye © ao SERYE: 
Peroxide of iron tos 28:495 
Potassa see nee soe 4°092 
Water of constitutio 6°935 
Water of combination 0'850 
Insoluble residue 43:350 
102°000 

Rejecting moisture and insoluble matter, 
the, contained mineral gave :— 

Sulphuric acid ... 382°758 
Peroxide of iron 47°482 
Potassa at 7:332 
Water... one 12:428 
100-000 

These figures nearly correspond with an analysis by Rammelsberg 
of a yellow iron-ore from the brown coal of Kolosoruk in Bohemia, with 
the exception, that the latter contains about half a per cent. of lime in 
addition to its other constituents. 
71. Iron Prrrres (Sulphide of | 77. Iron Pyrires (Sulphide of 
Tron). 
Catherine Reef, Sandhurst. 
Presented by R. S. Dawson, Esq. 
79, MAGNETIC Pyrrires and IRON 
Pynrites (Sulphide of Iron). 
Mount Buller Quartz Mining 
Company, Howqua River. 
The massive variety contains 7 dwts., 
the crystalline one, 2 ozs. 14 dwts. of 
gold to the ton. 
73. ArsENICAL IRON PYRITES. 
Map No. M 81. 
Barfold Range, Emberton. sheet 
13 S.E. 
Occurs in a quartz reef. 
74. MAGNETIC PYRITES and IRON 
Pyrires (Sulphide of Iron). 
See No, 72. 
75. IRON PYRITES. List No. A 2a. 
North of Lancefield. } sheet 5 
S.E. 
Found at a depth of 45 feet in a bed 
of lignite and black clay, 15 feet thick, 
in a Newer Pliocene deposit, 
76. Tron PyrīTEs (Sulphide of 
Tron). 
Mariner's Reef, Maryborough. 
Occurring crystallized in cubes, It 
contains only slight traces of gold. 
Tron). 
Mariner’s Reef, Maryborough. 
In cubes, in shales with quartz veins. 
78. Iron Pyrires (Sulphide of 
Iron). 
Campbell’s Reef, Moyston. 
From tailings from North Star claim, 
It gives on assay 84 ozs. of gold to the 
ton, 
79. ARSENICAL IRON PyYRITES. 
Map No. M 30 and 31, 
Barfold Ranges. } sheet 13 S.E. 
In quartz, accompanied by scorodite 
occasionally. 
79a, ArsentcaAL Pyrires (Mis- 
pickel). 
Whip Reef, Sandhurst. 
80. Magnetic Pyrites (Pyrrho- 
tine). Map No. Mu 14. 
Tiverton Reef and Lisle’s Ree 
Maldon. Uj 2 
See also page 55, “Physical Geo- 
graphy, Geology, and Mineralogy of 
Victoria,” by Alfred R. ©. Selwyn 
(Director of the Geological Survey) 
and G. H. F. Ulrich (Field Geologist). 
81. Pyro.usitx (Binoxide of Man- 
ganese). 
Said to have come from the Upper 
Yarra. 
