86 VICTORIAN MINERALS.—OCASE xy, 
Case XV. 
SILICATES, CARBONATES, ETC. 
OPAL VARIETIES. 
102. OPAL JASPER. Map No. Ra 20. 
Riddell's Creek. 4 sheet 6 S.W. 
Occurs in a band of irregular lumps 
and nodules in the newer basalt. 
103. SEMI-OPAL, 
From the Basalt, Sunbury. 
1034. OPAL. 
From the Basalt, Sunbury. 
External portion colored brown, some 
parts white, vesicular and friable, con- 
taining iron pyrites; internal portion 
colored blue and opalescent, Both 
portions become opaque and white on 
heating. The brown contains 6'8 per 
cent. of water, and has a specific gravity 
of 2:049 ; the blue contains 8'5 per cent. 
of water, and its specific gravity is 2'038. 
Both contain sesqui-oxide of iron and 
alumina. 
104, OPAL JASPER. Map No. Ra 21. 
Bullangoorook, or Bullancrook, 
Similar to No. 102. i 
Presented by Mrs. Matson. 
105. Common OPAL. 
Gelantipy, Gippsland. 
In basalt. 
106. OPALINE QUARTZ. 
Heathcote, 
Occurs in the Newer Pliocene drift, 
near Police Reserve, . 
107. Hyarire (Miiller’s glass). 
Map No. Ra 37. 
Kyneton Police Reserve, 3 sheet 
9 S.E. 
Coating a doleritic newer basalt. 
108, HYALITE. Map No. M 21. 
Near Court House, Kilmore. 
4 sheet 4 S.W. 
Coating basalt and associated with 
quartz. 
109. CuLororar (?) 
Map No. Ra 15. 
Near Sunbury. 4 sheet 7 N.E. 
Occurs in nodular masses in decom- 
posed basalt, and was supposed, at one 
time, to be copper-ore. 
110. OpaLizEp Woop. 
Map No, _W_ 
TMF 
Durdidwarrah. 4 sheet 19 S.W. 
Brown opal, with the wood-structure 
clearly visible. 

CARBONATES, ETC. 
1, Catc-Spar (Carbonate of Lime). 
List No. Re 19. 
Mot, Gippsland. 
Occurs in veins in the carbonaceous 
rocks, 
2. CaLc-SPAR. List No. S4 and Z 
Campbell’s Reef, Moyston. 
' The only known quartz reef in which 
calespar occurs, 
3. Carc-Spar, List No. Rb 12a. 
Messrs. Fraser’s Contract for the 
Coliban Water Supply, Preston 
Vale. sheet 13 N.W. 
Forms a thin vein in granite, in the 
upper part of the shaft, associated with 
quartz, tale and felsnar. 
4. Catcitr (Carbonate of Lime). 
Phillip Island, Western Port Bay. 
Occurs in crystals in the Older Basalt. 
Presented by Mr. J, C. Newberry. 
