LivEBSiDGE. — On some of the N. Z. Minerals in the Otaijo Museum. 491 



Retinite. — Bay of Islands. 

 Found in coal. In colour, brown, almost Wack, by transmitted light 

 the colour is a rich amber brown. Fracture conchoidal, very brittle ; does 

 not fuse readily, burns with a luminous smoky flame, and leaves a very 

 small quantity of white ash. 



Bitumen. — Poverty Bay. 



The exterior surface is of a brown colour, withm it is black ; burns with 

 a luminous smoky flame, emitting a bituminous odour ; leaves a small 

 quantity of white ash ; breaks with conchoidal fracture ; very brittle ; 

 possesses bituminous odour. 



Sulphur. — White Island.'''' 



Massive, of a rich sulphur-yellow colour, with reddish tinge in parts, m 



places the exterior surface is coated with white earthy matter ; small 



imperfect crystals of sulphur occur in the cavities ; contains traces of 



selenium. 



Analysis. 



Sulphur .. .. .. .. .. 99-614 



Impurity . . . . . . . . . . '386 



100-000 (Liversidge). 



The impurity consists principally of a white clay-like pipeclay. 



A second sample yielded the following result : — 



Analysis. 

 Sulphur .. .. .. .. .. 99-5£4 



Foreign matter . . . . . . . . -446 



100-000 (Liversidge). 



Sulphur. — White Island. 

 Very similar to the former. 



Sulphur. — White Island. 

 A loose friable variety of sulphur with a pale greenish tinge of colour. 



Analysis. 

 Sulphur .. .. .. .. .. 98-888 



Foreign matter . . . . . . . . 1-112 



100-000 (Liversidge). 



The foreign matter consists for the most part of pipeclay-like material. 



Calcite. — Dunedin. 

 In small rhombohedi'al crystals, of a pale green tint, closely seated 

 together in an amygdaloidal cavity. 



* Trans. N. Z. Ii.tit., III., 278. 



