LivERSiDGE. — On some of the N. Z. Minerals in the Otago Museum. 493 



Calcite, — Dimedin. 

 Ill brown ti-cansparent crystals, made up of similar forms to the last. 

 Lustre vitreous. Associated with the calcite are radiate groups of iiatrolite 

 crystals, and both are seated upon a pale blue-coloured film of a minutely 

 crystallized zeolite, which has some of the characters of gismondine. 



Calcite. — Dunedin. 



In group of translucent pale green-coloured crystals, lining an amyg- 



daloidal cavity. 



Calcite. — Dunedin. 



A group of brown imperfectly-developed crystals. 



Calcite. — Dunedin . 



In radiate groups of small crystals, composed of the scalenohedron and 

 rhombohedron combined ; well developed, although almost microscopic in 

 size. 



Translucent ; lustre vitreous ; in amygdaloidal cavity. There is also 



present in the specimen a cast or impression of a radiate group of acicular 



arragonite crystals. 



Calcite. — Dunedin. 



A group of clear, transparent, and colourless crystals, with vitreous 



lustre. The forms are flattened elongated rhombohedra, which penetrate 



right across the cavity and abut against the opposite side. 



Calcite. — Dunedin, 



A radiated group of crystals consisting of the scalenohedron and 



rhombohedron combined. 



A rragon ite. -''• — Dunedin . 



Filling amygdaloidal cavities in basalt. 



Arragonite. — Caversham. 



Long blade-hke prisms in an amygdaloidal cavity lined with the zeolite 



natrolite. 



Arragonite. — Dunedin. 



In radiate rhombic prisms of a pale jpink colour, with vitreous lustre. 



The cavity is Uned with small rhombohedral crystals of pale yellow calcite. 



Arragonite. — Dunedin. 

 Beautiful rosettes of pale yeUow-coloured prisms with vitreous lustre. 

 The under portions are much charged with iron, and in consequence 

 present a brown colour. Presented by Captain Fraser. 



8elenitc.-\ — Moerald. 

 A clear and trans^Darent form of gypsum, (i.e., hydrous calcium sul- 

 phate=Ca SO^, 2II2O) ; roughly crystallized; valuable for the preparation 

 of various cements. 



* Eep. N.Z. Exh., 1865, p. 437. -f Kep. N.Z. Exh., 1865, p. 422, 437. 



