396 Transactions.—Geology. 
It has been collected from Red Hill, Collingwood, by Dr. Hector (Col. 
Mus. & Lab. Rep., xiii., p. 35). 
Bronzite, Mg (Fe) Si.—The occurrence of this mineral in diorite rocks 
of the West Coast is mentioned by Dr. Hector (Jurors’ Rep. N.Z. Ex., 
1865, pp. 266, 438), and by Mr. E. H. Davis at the Dun Mountain (Geol. 
Rep. 1870-71, p. 112). A specimen from the Dun Mountain in the collec- 
tion of the Colonial Museum consists of crystals of a brownish-green colour 
imbedded in a network of veins of picrosmine. 
Hyprous SrurcarEs or Macnesta anp Lime. 
Meerschaum, 2 Mg? Sis + 8 H.— The occurrence of this mineral at the 
Dun Mountain is mentioned (Col. Mus. & Lab. Rep., vi., p. 16), the speci- 
men having been collected by the late Mr. E. H. Davis. “Its colour was 
pure white, lustre feeble, opaque, structure amorpnous; to the touch it has 
that soft smoothness peculiar to minerals of this class; hardness 2 to 8; 
easily decomposed by hydrochlorie acid. It oecurs in contact with massive 
white quartz, enclosing columnar detached crystals of a dark green colour, 
probably hypersthene.” Its composition is— 
Silica a $a z: = i >> DB ID 
Lime Li ex ge ji aa Peo oe 
Alumina .. Bs es v. cis re PBD 
Iron oxides rae HS v. is .. traces 
Magnesia 2 He Se F .. 20°36 
Water of constitution .. ie n as 1017 
100:00 
Dermatin, (Mg, Fe) Si + 2 H.— This mineral is mentioned by Mr. E. 
H. Davis (Geol. Rep., 1870-71, p. 112) as occurring in thin faces with 
smooth polished surfaces at the Dun Mountain. 
Tale, Mg? Sit + H.—The occurrence of this mineral is mentioned by 
Dr. Hector (Jurors’ Rep. N.Z. Ex., 1865, p. 438) in quartz from the West 
Coast Sounds; and again by Mr. D. Macfarlane (Geol. Rep., 1876-77, p. 
27) at Jackson's Bay. "There are specimens in the collection of the Colonial 
Museum from Collingwood and Jackson's Bay, both being of a pale green 
colour. It is somewhat widely distributed on the West Coast of the South 
Island, being frequently found associated with the crystalline rocks of that 
district. 
Steatite is mentioned by Dr. Hector at Milford Sound (Jurors’ Rep. N.Z. 
Ex., 1865, pp. 266, 437), and it occurs in considerable quantities at Col- 
lingwood in a massive form and of a grey pink and green colour; some 
specimens are foliated. Its position is shown on the geological map of 
Collingwoo published by Dr. Hector (Geol. Rep., 1878-74, p. iv.) 
