246 MOSSOTTITE. 



Brit. Mus., Case 23. 



31. P. G. Horse-shoe Case, Nos. 658, 

 659. 



MossoTTiTE, Luca. A variety of Ara- 

 gonite, occurring as prismatic fibrous radi- 

 ated aggregations, of a pale green colour. 

 S.G. 2-884. 

 Analysis : 



Lime 50-08 



Strontia . . . . 4-69 

 Carbonic acid . . . 41-43 

 Oxide of copper . . . 0-95 

 Peroxide of iron . . . 0-82 

 Fluorine .... trace 

 Water 1-36 



99-33 



Localities. Gerfalco in Tuscany, in Lias : 

 also in the province of Messina- 



Mountain Blue. Pulverized Blue Cop- 

 per Ore. See Azurite. 



Mountain Cork. Asbestos in which 

 the fibres are interlaced so intimately, as 

 not to be perceptible, or capable of separa- 

 tion. Sectile. Somewhat elastic. So light, 

 as to float on water. Opaque. Feels meagre, 

 and resembles cork in feel and texture. 



Localities. Norwaj', Saxony, Spain, &c. 



Mountain Crystal, Jameson. Kock 

 Crystal (which see). 



Mountain Green, Kirwan. See Chry- 

 socolla. 



Mountain Leather. A variety of As- 

 bestos, from which it principally differs in 

 the fibres of which it is composed being 

 interlaced like those of felt, instead of being 

 even and parallel. It occurs in flexible flat 

 pieces, much resembling leather in appear- 

 ance, of a whitish or yellowish-white colour, 

 and is meagre to the touch. 



Localities. Near the Lizard Point, Corn- 

 wall, Strontian, Argyleshire. Aghanloo 

 and Slieve Gallion, Londonderry, Coagh and 

 Curley Hill, Tvrone. (See Mountain Paper.) 



3L P. G. ■'Horse- shoe Case, No. 1143. 



Mountain Meal, or Bergmehl. An 

 earthy mineral composed of silica 79, alu- 

 mina 5, oxide of iron 3, water 12. {Klap- 

 roth.) It occurs at Santa Flora, between 

 Tuscany and the Papal States, and has been 

 made into bricks, which are so light as to 

 float in water. 



Mountain Paper. The name given to 

 Mountain Leather, when in very thin 

 laminse. 



3L P. G. Horse-shoe Case, No. 1143. 

 Upper gallery. Wall case 41, No. 138a, from 

 Seaton, Devon. 



Mountain Tallow. See Hatchettine. 



MURIATE OF COPPER. 



Mountain Tar, Hatchett. See Petro- 

 leum. 



Mountain Wood. A harder variety of 

 Asbestos than Mountain Leather or Moun- 

 tain Cork, somewhat resembliiig wood in 

 appearance. The fibres of which it is com- 

 posed are slightly curved, and easily sepa- 

 rated : they are not elastic. S.G. about "Z. 



Localities. — Scotch. Auchindoir, Aber- 

 deenshire, in Serpentine. Portsoy, Banff- 

 shire. Glen Tilt, Perthshire. — Foreign. 

 Schneeberg, near Sterzing in the Tyrol. 

 Dauphine. Styria. Maryland, U.S. 



Brit. Mus., Case 34. 



Mucks. See Smut. 



MiJLLER's Glass. See Hyalite. 



MiJLLERiNE, Beudant. MiJLLERiTE, Hai" 

 dinger. Yellow Tellurium, see Sylvanite. 



Name. After MuUer, the German chemist, 

 discoverer of Tellurium. 



MuLLiciTE, Thomson. A variety of 

 Vivianite (phosphate of iron), occurring in 

 cylindrical masses consisting of divergent 

 fibres or acicular crystals, at Mullica* Hill, 

 and Franklin, New Jersey. 



Analysis, by Thomson : 

 Protoxide of iron . . . 42-65 

 Phosphoric acid . . . 24-00 

 Water ..... 25-00 

 Sand . . . . .7-90 



99-55 

 Brit. Mus,, Case 57. 



MuNDic. ( ? From mun, Celtic, for any 

 fusible metal.) The name given by Cornish 

 miners to Iron Pyrites. 



MuRCHisoNiTE, Levt/. A yellowish-grcy 

 and flesh-red variety of Felspar, found, in 

 Arran, and in rolled pebbles at Dawlish and 

 at Heavitree, near Exetei". 



Analysis, from Dawlish, by R. Phillips : 



Silica 68-6 



Alumina .... 16-6 

 Potash 14-8 



100-0 



Name. After Sir Roderick L Murchison, 

 the author of the " Silurian System." 



Brit. Mus., Case 30. 



MuRiA FossiLis PuRA, Walkrius. See 

 Common Salt. 



MuRiACiTE, or Muriazit, Werner. 

 Anhydrite when in broad lamellar crystals. 



Brit. Mus., Case 54. 



Muriate of Ammonia, Phillips. See 

 Sal Ammoniac. 



Muriate of Copper, Phillips. See 

 Atacamite. 



Whence the name. 



