Another occurrence of alluvial platinum is known at the head of the Don River in Central Queensland[4] p. 556. _Victoria._—Platinum occurs in the Walhalla Copper Mine, where it is associated in a hornblende-diorite lode-formation with copper pyrites, gold and silver. The ore is stated to contain from 2 to 7 dwt. platinum per ton. In the Thompson River Copper Mine platinum is found in a hornblendic rock rich in chalcopyrite. _Tasmania._—Iridosmine has been produced from the Bald Hill district near Waratah, in the north-western part of the state, since 1900, the metal being obtained from placer deposits in Nineteen Mile Creek and its tributaries, Linger-and-Die, McGinty’s and Barren Creeks, and from Savage River. It has been located _in situ_ in the rocks of Bald Hill, principally in serpentine, but also with chalcedony and opaline silica in lode-formations. In the former case, it is associated with magnetite, pyrite, pyrrhotite, nickel and gold. The iridosmine in the placer deposits is sometimes coated with iron oxide, and is also at times found enclosed in chromite. The following analysis in percentages, made at the Imperial Institute, is typical: osmium, 57·09; iridium, 33·80; platinum, 0·37; ruthenium, 8·19; palladium, 0·21; gold, 0·04; iron, 0·30; copper, trace. Other localities in Tasmania at which osmiridium has been located are Heazlewood River, Whyte River, Castray River, Huskisson River, Wilson River and Boyes River; also the Badger gold diggings, west of Savage River, and the Salisbury goldfield near Beaconsfield. The following table gives the recent annual output of osmiridium in Tasmania: ───────┬───────┬─────── Year. │ oz. │ Value │(troy).│ in £. ───────┼───────┼─────── 1910 │ 120 │ 530 1911 │ 272·9│ 1,188 1912 │ 778·8│ 5,742 1913 │1,261·6│ 12,016 1914 │1,018·8│ 10,076 1915 │ 247 │ 1,581 1916 │ 222·2│ 1,899 1917 │ 332·1│ 4,898 1918 │1,607 │ 1919 │1,669·7│ 39,614 ───────┴───────┴─────── _South Australia._—In the north-east part of the State traces of platinum have been recognized by analysis as occurring in the outcrop of a lode near Boolcoomatta. Further information on this occurrence is not available. _Papua._—Osmiridium, associated with small amounts of gold only, is known to occur as alluvial in the neighbourhoods of various serpentine areas; in the Lakekamu district, in flaky form; in the Yodda Valley, in appearance similar to native bismuth; and in other places in shot-like granules[44]. NEW ZEALAND