New Zealand, p. 274 (with analysis by Reuter). Skey, Col. Mus. 

 and Lab. Report, No. 6, p. 17 (analysis). Davis, Report, GeoJ. 

 Expl. 1870-1, p. 110. Renard, Report Challenger Eepedition, 

 Narative ii., appendix B, pp. 22-23. For analyses by Schrotter 

 and Madelung, see VVadsworth's Lithological Studies, p. 121, 

 Table IV., p. xxviii., and Teall's British Petrography, p. 102. 



Serpentine. 



Altered peridotites, in which the olivine has been changed into 

 serpentine, and the enstatite into bastite. 



Dim Mountain, Nelson.— K brownish-black rock, moderately 

 soft. S.C 2-.59 to 2-65. Section: Fibrous serpentine with mag- 

 netite in crystals and grains, scattered or collected into veins. 

 Structure not distinct, but similar throughout. Evidently derived 

 from one mineral — olivine— and shewing the same kind of cracks, 

 as the olivine of dunite from the same locality. Hochstetter, 

 Lectures on the Geology of N.Z., p. 94 ; New Zealand, p. 274 ;. 

 Skey, Col. Mus. and Lab. Report, No. 6, p. 17; Davis, Rept. 

 Geol. Expl., 1870-1, p. 110 ; McKay, I.e., 1878-9, p. 102. 



Wiwihy Creek, Centre Hill, Southland.— A greenish-black rock, 

 moderately soft. S.G. 2-58. Section : Composed of fibrous ser- 



pyrites in small crystsils. Most of the serpentine shews ' mesh 



crystals, greenish-yellow, faintly pleochroic, chau-iiisi from vellow- 

 brown to green. Apparently an altered Lherzolite. Forms a 

 dyke in Coal Hill. 



Mff Bmj, Lake Co.— Serpentine as well as dunite, is found at 

 Red Hill and other places inland from Big Bay. Near Barn Bay 

 it contains sometimes an alloy of nickel and iron in the proportion 

 2 Ni. + Fe. (Ni. 67-63 -i- Fe. 31-02) which has been called Awaruite- 

 by Mr. W. Skey. The meteorite found in Oktibbeha Co. Missouri, 

 contauied Ni. .59-69 + Fe. 37 69, which was the highest nickliferous 

 alloy previously known. This allov has been called Oktibehite. 

 Skey, Trans. N.Z. Inst, Vol. xvill.,'p- 401. 



PALLASITB GROUP. 



Crystals of olivine, and often of pvroxene, in a matrix of iron 

 which IS usually nickeliferous. The iron is usually metallic, rarely 

 as iron oxides (Cumberlandite). Iron 43 to 80 per cent., usuaUy 



usuhUv between 4 and 6. The magnesia is less than half the iron 

 and less than the silica. Known chietly as Meteorites. 



