MENEGHINITE. 

 Hills of Somersetshire, on earthy black 

 manganese. It occurs also in opaque pris- 

 matic crystals at Tarnowitz, in Silesia, and 

 at the Kunibert Mine, near Brilon, in 

 Westphalia, Avith Calc Spar and Calamine. 

 Brit. Mus., Case 57 b. 

 Meneghinite, Bechi. A kind of Hete- 

 romorphite or Feather - ore, occurring in 

 compact fibrous forms. Very lustrous. 

 H. 2 5. 



Comp. 4Pb 8 + Sb S3. 

 A.nalysis, bv Bechi : 



Sulphur" .... 17-52 

 Antimony .... 19-28 



Lead 59-21 



Copper 3-51: 



Iron . . . . . 0-34 



99-90 

 Locality. Bottino, near Serravezza, in 

 Tuscany. 



Name. After Prof. Meneghini, of Pisa. 

 Mengite, G. Ro,.j, Nicol, Dufrenoy. 

 Ehombic : occurs in small short prisms, 

 which are often terminated by four- sided 

 pyramids. Colour iron-black. Lustre sub- 

 metallic ; of fractured surface, sub-vitreous. 

 Opaque. Streak chestnut-brown. Fracture 

 uneven. H. 5 to 5-5. S.G. 5-48. 



Fig. 287. 



Comp. Fe, ^r, Ti. 

 BB infusible, but becomes magnetic. 

 Almost wholly soluble in warm concen- 

 trated sulphuric acid. 



Locality. Ilmen Mountains, in granite 

 veins, imbedded in Albite. 

 Name. After Mons. Menge. 

 Mexilitk, IVerner. A brown and opaque 

 Variety of Opal, found in irregular, com- 

 pact, reniform nodules, which are sometimes 

 slaty, in tertiary strata in many localities in 

 the neighbourhood of Paris. Translucent, 

 iisurface dull, and sometimes covered with a 

 white crust. Brittle. 

 Analysis, by Klaproth : 



Silica 85-50 



Alumina . . . .1-00 

 Peroxide of iron . . . 0-50 



Lime 0-50 



Water and carbonaceous 

 matter , . . .11-00 



Localities 



98-50 

 Principally at Saint- Ouen and 



f See Native 

 , r Amalgam. 



MESOLE. 235 



Menil-montant, near Paris, in beds of adhe- 

 sive slate ; and in the environs of Le Mans. 



Name. After that of the locality. 



Brit. Mus., Case 24. 



M. P. G. Horse-shoe Case, No. 772. 



Mennige, Hausmann. See Minium. 



Meecurblende. See Cinnabar. 



Mercure Argental, 

 Haiiy. 



Mercure Argentif, 

 Ha'dy. 



Mercure Chlorure. See Calomel. 



Mercure Corne, Rome de Lisle. See 

 Calo:mel. 



Mercure Iodure, Dufrenoy. See Coc- 



CINITE. 



Mercure Muriate, Brochant, Haiiy. 

 See Calomel. 



Mercure Natif, Haiiy. See Quick- 

 silver. 



Mercure Sulfure, Haiiy. See Cinna- 

 bar. 



Mercurial Hepatic-ore, Jameson. See 

 Hepatic Cinnabar. 



Mercurial Horn-ore, Jameson. See 

 Calomel. 



Mercurial Liver- ore, Jameson. See 

 Hepatic Cinnabar. 



Merda di Diavolo. Name for Dyso- 

 dile, in Sicily. 



I\[.ERKURGLANZ. See Onofrite. 



Meroxene, Breithaupt. The name given 

 to the brilliant crystals of Biotite, from 

 Vesuvius. Colour brownish-green. Unc- 

 tuous to the touch. S.G. 2-8. 



Mesitine Spar, Dana, Nicol. Mesitin- 

 spath, Dufrenoy. A variety of Breunnei'lte, 

 occurring in lenticular forms at Traversella, 

 in Piedmont. 



Analysis, by Gibbs : 



Carbonate of magnesia . 56-14 



Carbonate of iron . . 43-36 



Carbonate of lime . . 0-29 



99-89 

 Name. From iu.i<rory,i, in allusion to its 

 composition, which is intermediate between 

 Spathose Iron and Carbonate of Magnesia. 

 Brit. Mus., Case 47. 



Mesole, Haidinger, Rose. Occurs in im- 

 planted globules, with a flat columnar or 

 fibrous structure, radiating from the centre, 

 or stalactitic. Colour greyish-white, yel- 

 lowish, or reddish. Translucent. Lustre silky 

 or pearlv. Lamings slightlv elastic. Streak 

 white. 'H. 3-5. S.G. 2-35"'to 2-4. 



Comp. (Ca3, Na) 2Si + 3A1 Si + 8H. 



