7

C.-3

" Limestone, Coast, north of Coromandel, analysed by W. O. Bell. " Silica ... 3-36 Iron and alumina ... ... ... ... ... ... 7-08 Carbonate of lime ... ... ... ... ••• ... 86-12 Carbonate of magnesia ... ... ... ... ... ... 2-35 Water and loss ... ... ... ... ... ••• ... 1"09 100-00 "This is an excellent limestone for burning into lime both for mortar and agricultural purposes, and will in the future be a valuable asset to the Coromandel and Cabbage Bay districts, where calcareous rocks are scarce. " Marble, Takaka Valley, Nelson.

" This is a very pure form of marble or crystalline limestone of Silurian age, from the Takaka Valley, where it covers a large area. It is eminently suited for a building-stone, also for burning for mortar and agricultural purposes. " Garden Soil, Parawai. Thames, analysed by Mr. W. J. Mau. "Si0 2 ... ... ... ... ... ... ... ... 68-13 Fe 2 0 3 ... ... ... ... ... ... ... ... 9-96 Al 2 O s 3-50 P 2 0 5 ... ... ... ... ... ... ... ... Trace CaCo 3 2-10 MgC0 3 ... ... ... ... ... ... ... Trace K 2 O .. ... ... ... ... ... ... ... Trace Na 2 O ... ... ... ... ... ... ... ... Trace Organic matter) 1 fi • fin Water ) 100-29 "This is a black, loose, loamy soil, somewhat siliceous, and deficient in lime and alkalies; fairly well adapted for the growth of cereals, but would require liberal manuring for root-crops. Tui Ore, Te Aroha, analysed by W. 0. Bell. "Silica ... ... ... ... ... ... ... ... 26-17 Iron ... ... ' ... ... ... ... ... ... 8-61 Copper... ... ... ... ... ... ... ... 3-24 Zinc • ... ... ... ... ... ... ... ... 24-38 Lead ... ... ... ... ... ... ... ... 12-16 Cadmium ... ... ... ... ... ... ... Trace Silver ... ... ... ... ... ... ... ... 0-14 Sulphur ... ... ... ... ... ... ... 25-16 99-86 " This is a complex sulphide ore, composed of iron- and copper-pyrites, blende, and galena. It contains 370z. sdwt. 7gr. of silver, and loz. lOdwt. of gold per ton. " Copper-ore, South Australia, analysed by Mr. W. Climo. "Silica 1-000 Iron ... ... ... ... ... ... ... ... 19-600 Antimony ... ... ... ... ... ... ... 2-150 Arsenic ... ... ... ... ... ... ... 3-040 Copper ... ... ... ... ... ~. ... 35-280 Bismuth ... ... ... ... ... ... ... 17-300 Sulphur ... ... ... ... ... ... ~. 17-460 Gold , , -004 Silver... ... ... ... ... ... ... ... -013 Carbon dioxide .. ... ... ... ... ... ... 3-970 Water and 1055... ... ... ... ... ... ... -183 100-000 " This was a very complex ore, consisting of a number of base metals combined with sulphur, arsenic, and antimony, the sulphides predominating. A small percentage of the copper existed as the blue carbonate. The gold and silver exist at the rate of about £17 per ton, but the extraction has proved a very difficult problem.

Analyst. Silica. Iron and Alumina. Calcium Carbonate. Magnesium Carbonate. Totals. . T. Day lain Hogg 7. Shepherd 2'24 1-98 2-20 2-18 1-95 2-10 94-86 95-13 96-02 Trace Trace Trace 99.28 99.06 100-32