CERASINE. 





Comp. Ca4 "^s'lS + oH^ 



: lime 



29-20, silica 



50-06, v/ater 11-74 = 



= 100. 







Analysis : 









Silica . 







. 58-86 



Alumina 



. 





. M4 



Lime . 



, 





. 27-91 



Magnesia 



, 





. 16 



Potash 



, 





. 0-59 



Water . 







. 11-41 



100-07 



In matrass yields -water, becoming opaque 

 and silvery-white. 



BB alone fuses readily, -with continued 

 spirting, to an opaque glassy bead. 



Decomposed by muriatic acid without 

 gelatinising. 



Locality. The Bay of Fundy, on the 

 shore of Annapolis Co., two miles E. of 

 Black Rock. 



Name. From yAvrpov, a centre, and ccXaa-a-ca, 

 to change, in allusion to the passage of the 

 miner.al into opaque white, a change of con- 

 dition which commences uniformly at the 

 centre. 



Centralasite differs from Cyanolite, in 

 having 5 equivalents less Silica. See Cy- 

 anolite and Cerikite. 



Cera SINE or Cera site ; names given by 

 Beudant, both to Mendipite and Crorafor- 

 dite. 



Cerasite, Dana. See Mendipite. 



Ceraunian Sinter, from y,izc<.'jvto;, struck 

 with lightning. See Fulgurite. 



Cererit, Haidinger, Hausmann. Cere- 

 rite, Brooke §' Miller. Cerinstein, Werner. 

 Hexagonal. Occurs in short six-sided prisms, 

 also massive and granular. Colour between 

 dark peach-red and clove-brown, passing 

 into grey. Slightly translucent at the edges. 

 Lustre dull adamantine or resinous. Streak 

 grej'ish white. Scratches glass, and gives 

 sparks with steel. Fracture splintery and 

 more or less shining. H. 5-5. S.G. 4-93. 



Comp. Disilicate of Cerous Oxide, or 



2 (Ce, La Di, Ca, Fe) Si + 2H. 



Analysis (mean) by Rammelsberg : 



Silica 19-18 



Protoxide of cerium . . 64'55 

 Protoxides of lanthanum and 



didymium . . . 7-28 



Protoxide of iron . . 1-54 



Lime 1-35 



Water . . . . . 5-71 



99-61 

 BB on charcoal it splits, but does not fuse : 

 dissolves slowly with borax in the outer 



CERITE. 69 



flame, forming a dark yellow glass, which 

 becomes colourless as it cools ; in the inner 

 flame gives a feeble tint of iron. 



Partially decomposed by muriatic acid, 

 leaving an insoluble residue of a different 

 composition from that contained in the 

 solution. 



Localities. The Copper mine of Bastnas, 

 near Riddarhyttan in Sweden, where it 

 forms a bed in gneiss, and is associated with 

 Copper, Molybdena, Bismuth, Mica and 

 Hornblende. 

 Brit. Mus., Case 26. 



Cerine, Hisinger 6^ Berzelins. A variety of 

 Allanite. The Cerine of Berzelius is found 

 associated with Cerite, Hornblende and 

 Copper Pyrites, at Bastnas, near Riddar- 

 hyttan, in Sweden. It occurs both in crys- 

 tals and in crystalline masses, of a brownish- ' 

 black colour, with a Aveak greasy lustre. 

 Subtranslucent in thin splinters. 

 H. 6. S.G. 3-77 to 3-8. 

 Analysis from Bastnas, bv Hisinger : 

 Silica ....'. 30-17 

 Alumina .... 11-31 

 Protoxide of iron . . 20 72 



Protoxide of cerium . . 28-19 



Lime 9-12 



Oxide of copper . . . 0-87 



100-28 



Brit. Mus., Case 38. 



Cerinite, H. How. A mineral forming 

 the coating or exterior portion of a reniform 

 nodule, about half the size of a fist, partly 

 imbedded in crystalline trap. Amorphous, 

 looking very like Avhite or yellowish-white 

 wax. Lustre subresinous. Subtranslucent^ 

 in very thin fragments. H. 8-5. 



Comp. 3Ca Si + 2A1 si^ + 12H. 



nalysis : 





Silica . . . , 



. 57-57 



Alumina 



. 12-65 



Peroxide of iron . 



. 1-14 



Lime .... 



. 9-82 



Magnesia 



. 1-87 



Potash 



. 0-37 



Water 



. 15-69 



99-11 



BB fuses readily without intumescence. 



Locality. The Bay of Fundj, on the shore 

 of Annapolis Co., N. S. ; a couple of miles E. 

 of a headland called Black Rock. 



Name. From y^r.^i^os, loaxy ; from its wax- 

 like appearance. See also Centralassite 

 and Cyanolite. 



Cerite, Phillips. See Cekerite. 

 f3 



