122 



RECORDS OK THK AUSTRALIAN MUSKUM. 



Stanthorpe, Quebnsland. 



(Plate xxxvii., figs. 1, 2.) 



The crystal shown in fig. 1 is from Spring Gully ; it measures 

 •4 X '6 X 1- cm,, and is clear and colourless. The terminal planes 

 are much corroded and towards the apex even channelled. On 

 the faces of /(021) are elongated markings the Munt ends of which 

 are directed towai'ds the apex and the |)ointed ends towards y 

 (041) ; y is striated parallel to its intersection with f. 



MBASURBD AND CALCULATED ANGLES. 



Fig. 2 represents a crystal of which tlie locality is given as 

 Stanthorpe simply. It is light blue in colour, domal in habit, 

 and measures 1-2 x 1*3 x 1-8 cm. It resembles somewhat the 

 Stanthorpe crystal previously described in these Records' ; prob- 

 ably these larger crystals belong to an older generation than 

 does the Spring Gully specimen described above. The rectangular 

 markings on m (110) are very pronounced ; the faces of o (001) 

 and f (021) are much etched as shown in the figure ; all the ter- 

 minal planes are somewhat worn, and gave only approximately 

 correct angles. The prism n (140) is doubtfully present as 

 striations in y (130). 



^Anderson — Rec. Austr. Miis., vii., 1908, p. 61, pi. xiii., figs. 3, 4. 



