107 



filliiiir all the space between the zeolites. Wherever calcite has 

 been found with zeolites it is younger than these. 



Кар Dalton. On Station mountain a single fragment 

 was found consisting of granular quartz ; all over the outer 

 surface of this are distinct impressions of calcite crystals , to 

 the size of 4 cm., the calcite itself having completely dis- 

 appeared. The crystal form is that of acute rhombohedra 

 /'{0221) with bright, well-developed faces. 



Mount Henry. In a few cavities, some small (2 — lO'"™) 

 bright, colourless crystals are found, associated with laumontite, 

 embedded in coarse-grained masses of whitish calcite. The 

 crystals are all acute rhombohedra /"{0221); the faces of the 

 larger ones are irregular and curved, but those of the smaller 

 are generally bright and well-developed. 



Turner Ö. Optically-continuous masses of calcite are 

 found filling the spaces between stilbite and natrolite in the 

 cavities. Also loose cleavage-fragments of about 4 cm. occur; 

 these are semi-transparent and of a pale yellow colour. 



Кар Brewster. Calcite appears here in various forms: 

 II As small crystals (1 — 3°™) on the walls of a fissure in a 

 grey üne-grained basalt. The crystals are acute rhombohedra 

 f?{088l}; the faces being very rough and dull and the 

 colour a dark yellowish-brown. 

 2i As the infilling of a cavity, between columnar masses of 

 mesolite and penetrated by fine mesolite needles. Here the 

 calcite is for the most part fine-grained, but sometimes 

 crystals 2 cm. long are found, in the form of acute rhom- 

 bohedra /"{0221} with rough, dull faces. The colour is a 

 light-brown. 

 3) In small quantities calcite occurs as the infilling of cavities, 

 in association with small heulandite crystals. There is 

 usually only a single calcite individual in each cavity and 

 the colour is greyish. 



