78 CHILI SALTPETRE. 



where it occurs in cavities in Arseno-plios- 

 phate of Lead, with amorphous Carbonates 

 of Lead and Copper. It has a dark-brown, 

 or brownish-black colour, and an earthy 

 appearance resembling that of a ferrugi- 

 nous clay or earth. 



Comp. Pbsy + Cu^V. 





Analysis by Domeyko : 





Vanadic acid 



. 13-33 



Arsenic acid . 



. 4-68 



Phosphoric acid . 



. 0-68 



Oxide of copper . 



. 16-97 



Oxide of lead 



. 51-97 



Chloride of lead . 



. 0-37 



Lime . 



. 0-58 



Peroxide of iron and a 



lumina 3--4-2 



Silica . 



. 1-33 



Ciav . 



. 1-52 



Water . 



. 2-70 



97-55 

 Chili Saltpetre. See Xitratine. 

 CHii,TO?fiTE, Emmons. See Prehnite. 

 Chimborazite. See Aragonite. 

 Chiolite, Hermann §■ Auerbach. Pyra- 

 midal ; occurs crystallized, but generally 

 compact like Cryolite, with a crystalline 

 structure. Colour snow-white. Lustre vitre- 

 ous, slightly resinous. Translucent. H. 4. 

 S.G. 2-72. 



Comp. 3Na F + 2 A12 p5. 

 Analysis by Hermann : 



Sodium . . . . 23 78 



Aluminum .... ]8-(>9 

 Fluorine .... 57'53 



100-00 

 J3B fuses easily, and affords the re-action 

 of fluorine. 



Effervesces and gives off hydrofluoric acid 

 in sulphuric acid. 



Locality. Miask, in the Topaz mine No. 5, 

 forming a vein in graphic granite. 

 Brit. Mus., Case 58. 



Chivialite, Rammelsberg. A mineral re- 

 sembling Bismuth-glance, found accompany- 

 ing Pyrites and Barytes at Chiviato, in Peru. 

 Colour lead-grev. Lustre metallic. S.G. 6-92. 

 Comp. ("C-u," Pb) S + 1 Bi2 S5, R. 

 Analysis bv Rammelsberg : 



Sulphur" .... 18-00 

 Bismuth .... 60-95 



Lead 16-73 



Copper 2-42 



Iron ..... 102 

 Silver ..... trace 

 Insol. ..... 0-59 



100-00 



CHLORASTROLITE. 



BB like Aikenite, to which it is near in 

 composition. 



Chladnite, Shepard. A meteoric mine- 

 ral, forming more than two-thirds (90 per 

 cent.) of the Bishopville stone, in which it 

 occurs in imperfect crystals, very closely 

 approaching, in external form, some of the 

 most common forms of Felspar and Albite. 

 These crystals, whose primary form is a 

 doubly oblique prism, are sometimes nearly 

 an inch in diameter. Colour snow-white, 

 rarely with a tinge of grey. Translucent 

 (in undecomposed fragments semi-trans- 

 parent). Lustre pearly to vitreous. Very 

 brittle, masses half an inch in diameter, 

 being easily crushed between the fingers. 

 H. 6 to 6-5. S.G. 3-116. 



Comp. Ter-silicate of Magnesia. 



BB alone, on charcoal, fuses without diffi- 

 culty and with phosphorescence to a white 

 enamel ; with borax, very slowly, to a trans- 

 parent glass. 



It is named after Chladni, the scientific 

 founder of Astrolithology.* 



Chloanthite, Breithaupt. The term 

 under which is comprised the Nickel varieties 

 of Smaltine, the latter term being restricted 

 to the Cobaltic varieties. 



Comp. Ni, As2 = arsenic 72-1, nickel 28*3 

 = 100-0. 



Ch LOR apatite. Voelcker. A variety of 

 Apatite from Krageroe, in Norway, distin- 

 guished by the entire absence of fluorine, 

 and a very small but variable quantity of 

 chloride of calcium, varying from 1-61 to 

 1*71 in some specimens, to 6-41 to 6-70 in 

 others. 



Comp. 3 (Ca3P) + CeCl. 



Chlorastrolite, C. J. Jaclison. A pale 

 bluish-green mineral occurring on the shores 

 of Isle Royale, Lake Superior, in small 

 water-worn pebbles, which have been derived 

 from trap. It is finely radiated or stellate 

 in structure, with a pearly lustre, and is 

 slightly chatovant on the rounded sides. 

 H. 5-5 to 6. S\G. 3-18. 



Comp. (Ca, Na)5 Si + 2 (Al, Fe) Si + 3 H 



= (iK3 + | Al)Si + H. 

 Analysis by Whitney : 



Silica 36-99 



Alumina .... 25-49 

 Peroxide of iron (a little 

 protox.) . . . .6-48 



Lime 19-90 



Soda ..... 3-70 



* From UerT'/;o, a meteor, 

 treatise. 



;, a stone, My or, a 



