Mines and Mineral Statistics. 
107 
wood is common, and coal has been found in the river higher up ; 
also carboniferous fossils, such as Favorites Gothlandica and others. 
Amongst the minerals associated with the diamond are the 
following (This list, Ave shall sec, is almost identical Avith that 
furnished by Bingcra) : — 
1. Black vesicular pleonast. This mineral has not yet been 
found at Bingcra. 
2. Topaz. 
8. Quartz. 
4. Corundum. 
a. Sapphire. 
1). Adamantine spar. 
c. Barklyite. 
d. A bluish Avhite variety, cliaracteristic of Mudgee. 
e. Euby. 
f. Eolled corundum, dirty AA'hitc and pink. 
5. Zircon. 
G. Tourmaline. 
7. Black titaniferous sand. 
8. Black magnetic ironsand. 
9. Brookite. 
10. AVoodtin ; rare. 
11. Garnets. 
12. Iron, from tools. 
13. G-old. 
14. The Diamond. 
The largest found Avas 51* carats zr roughly 16’2 grains. The 
aA^erago sp. gr. AA^aa 8'44 ; and the aA'erage Aveight 0'28 carat, 
or nearlA' one carat grain each. Tlie carat contains 4 carat grains 
wFich are equfil to 3TG grains troy. 
The Newer Pleiocene drift alTordcd a few diamonds, and being 
derived ])art]y from tlic older drift, its materials are somewhat 
similar ; but in addition to the gems as enumerated, a tew grains 
of osmiridium have been collected from it. 
Diamonds haA'o also been found in ^ ictoria, but in no large 
quantities, and of but small size, but no report ol their geological 
position appears to have been published. 
AVe Avill noAv return to tlic more immediate subject of this note. 
The BuhOera. Dtamoicd AV^orktj^os. 
The diamond-bearing deposits at present iindergoing develop- 
ment are some seven or eight miles, more or less, to the south of 
Biugera, and are situated in a kind of basin or closed valley 
amidst the hills ; this basin is about four miles long by three 
wide, and is open to the north. 
This, together Avith the surrounding district, is evidently 01 
Devonian or Carboniferous age, but all attempts to procure fossils 
