128 



RECORDS OF THK AUSTRALIAN MUSEUM. 



reddish brown colour. The faces are often wavy and imperfect, 

 hence the signals are sometimes hazy and indistinct, and the 

 readings obtained not goorl. Both simple and twinned crystals 

 occur. 



Four crystals were measured with results as tabulated below ; 

 the form \ (212) is new. The anglesof c (001), « (120) and < (212) 

 were obtained from single faces, of .s(l21) and X from two faces. 

 In addition to the seventeen forms enumerated there were observed 

 on one crystal (No. I.) a single face each of what may be a (^01) 

 previously observed on monazite from California Creek, Queens- 

 land^ (p obs =67°20, calc. 69 43), and a new form (302) (p obs = 

 49°26, calc. 50 55). The crystal is apparently untwinned, but the 

 supposed new face (302), wliich consists of small patches giving a 

 fairly good signal, may possibly belong to the form to (101) (p = 

 5 0"lO) of a twinned portion. 



FORMS AND ANGLES. 



"Anderion — Rec. Austr. Mus., vii., 1909, p.'2Sl, pi. Ixxxi., tig. u. 



