416 ^ ZEOLITE COMMUNE. 



Name. From ?^ to J oil, because of their 

 general character of intumescing -when 

 heated. 



Brit. Mus., Cases 27, 28. 



Zeolite commuke, Nap. See Stilbitb. 



Zeolite dur. See Analcime. 



Zeolite effloeescente. See Laumo- 



NITE. 



Zeolite fibreuse. See Natrolite. 



Zeolite rayonnee. See Stilbite and 

 Mesotype. 



Zeolite tenace. See Dysclasite. 



Zeolithe lamel- ■% 

 leuse, Brocliant. ^ f See Foliated 



Zeolithe nacree, T Stilbite. 

 Ladnelherie. } 



Zeolithe rayonnee, Brochant. See 

 Stilbite. 



Zeuxite, Thomson. The name given by 

 Dr. Thomson to a variety of Iron-Tour- 

 maline met with at Huel Unity, in Cornwall, 

 in small translucent, acicular crystals, of a 

 greenish-black colour. The crystals, ap- 

 parently rectangular prisms, were much in- 

 terlaced and collected into fibrous masses. 

 H. 4 to 5. S.G. 3 to 3-1. 



BE alone infusible ; with borax, forms a 

 dark-brown glass. 



Name. From liv^i;, a connexion ; because 

 of its occurrence at the United Mines. 



Zeylanite, or Ceylanite, Werner. A 

 variety of Pleonaste. See Zeilanite. 



Zianith:, Werner. See Kyanite. 



ZiEGELERZ, Werner. Zikgukline, Beu- 

 dant. Earthy Eed Oxide of Copper. See 

 Tile Ore. 



Zinc is stated by G. Ulrich to have been 

 found in a metallic state near Victoria, in 

 Australia. According to Becker it occurs, 

 also, in the gold washings of the Mitta 

 River. 



Zinc-blende, Jameso?t. See Blende. 



Zinc Bloom, Smithson, Dana. Occurs 

 in reniform earthy masses, and incrustations, 

 and is probably a result of the decomposi- 

 tion of Calamine. Colour white, greyish, or 

 yellowish. Opaque. Lustre dull. Streak 

 shining. H. 2 to 2-5. S.G. 3-58 to 6. 



Comp. Zn3 C + 3H ( Smithson), or Zn C + 



Zn2 H {Rammelsherg). 





Analysis, by Smithson : 





Oxide of zinc 



. 71-4 



Carbonic acid 



. 13-5 



Water .... 



. 15-1 



100-0 

 Localities. Bleiberg and Raibel in Carin- 

 thia ; associated with ores of zinc and lead. 



ZINCITE. 



Santander, Spain ; of a pure white, and S.G. 

 2-25. 



Zinc-carbonate, Haily, Dufrenoy. See 

 Calamine. 



ZiNCFAHLERZ. See KUPFERBLENDE. 



Zinc-glance. See Siliceous Calajniine 

 or Smithsonite. 



Zinc hydrate cuprifere, Levy. See 

 Tyro LITE. 



Zinc hydro-carbonate, Dufrenoy. See 



ZiNCITE. 



Zinc-iron spar. The name proposed by 

 Monheim for the dark-green varieties of 

 Zinc-spar (Calamine), and also to those 

 which turn brown by oxidation of the 

 iron. 



ZiNC-LEAD-SPAR, Karsten. Carbonate of 

 lead, containing an admixture of 7 per cent, 

 of carbonate of zmc. 



Zinc oxide. See Zincite. 



Zinc oxide ferrifere, Haily. See 

 Franklinite. 



Zinc oxide rouge, Dufrenoy. See Spar- 

 ta lite. 



Zinc oxide silicifere, Haily. See 

 Smithsonite. 



Zinc oxyd^ v. Leonhard. See Zincite. 



Zinc spar. See Calamine. 



Zinc sulfate, Haily. See Goslarite. 



Zinc sulfure, Haily. See Blende. 



Zinc vitriol, Kirivan, Jameson. See 

 Goslarite. 



Zincite, Haidinger, Dana, Nieol. ZiNCO- 

 NISE, Beudant. Hexagonal ; with a perfect 

 basal cleavage. Generally occurs dissemi- 

 nated in crystalline grains or coarse par- 

 ticles, and aggregates. Structure granular, 

 also foliated. Colour blood-, or hyacinth-red, 

 also inclining to yellow. Translucent at the 

 edges. Lustre subadamantine. Streak 

 orange-yellow. Brittle. Fracture subcon- 

 choidal. H. 4 to 4-5. S.G. 4-32 to 5-53. 



Comp. Oxide of zinc, or Zn = zinc 80*26, 

 oxygen 19-74=^100. 



According to Leopold Gmelin, Zincite is 

 a mixture of 88 parts of zinc-oxide and 12 

 parts protoperoxide of manganese. 



A?ialysis, from Franklin, by W. F. Blake. 

 S.G. 5-684 (at 60° F.) : 



Oxide of zinc . . . 99-47 

 Peroxide of manganese . 0-68 

 Loss by ignition . . . 0-23 



100-38 



BB alone, infusible, but emits a strong 

 light. Volatilizes at a strong white heat. 

 With borax yields a yellow transparent 



glass. 



