482 LIST OF MINERALS, THEIR 



MOLYBDENUM, oxide, fibrous. 



pulverulent. 



sulphuret. The form of the only crystals I have seen 

 is a regular hexagonal prism , which is probably 

 the primary form. 

 Moon-stone, see Felspar. 

 Moroxite, see Lime, phosphate. 

 Mountain, cork, leather, wood, see Asbestus. 

 Mountain meal, see Bergmehl. 

 MOUNTAIN SOAP. 



Miillers glass, see Quartz, hyalite. 

 Muriacite, see Lime, sulphate, anhydrous. 

 Muricalcite, see Lime, carbonate, magnesian. 

 Mundic, a name given by the Cornish miners to Iron pyrites. 

 MURIATIC ACID. 

 Mussite, see Pyroxene. 

 Myrsen, see Magnesia, hydrate, siliceous. 



N 



Naphtha, see Bitumen. 

 Napoleonite, see felspar, globular. 



NAPOLITE. A blue mineral from Vesuvius, see Annals of 

 Philosophy, vol. 7. p. 402. I have called it Napolite 

 for the purpose of distinguishing it by name from Hauyne 

 with which it has been classed, but to which species it 

 appears not to belong. 

 Natrolite, see Mesotype. 

 Natron, see Soda. 



Necronite, is probably Felspar. It has two cleavages pro- 

 ducing bright planes at right angles to each other, and 

 an indistinct oblique cleavage, and has the same lustre 

 and hardness as Felspar. 

 Needle ore, see Bismuth, sulphuret. 

 NEEDLE-STONE ; Scolezite. 



crystallised. A right rhombic prism , M on M', 91 20'. 

 The Needle stone from Iceland, and that from 

 Faroe, afford the same measurements by the re- 

 flective goniometer. Dr. Brewster regards them 

 however as distinct species, 

 acieular. 



pulverulent ; Mealy stilbite. 

 Neopetre, see Quartz, hornstone. 



NEPHELINE ; Sommite. A regular hexagonal prism^ M on 

 a plane belonging to mod. class c, 134 



The Nephelines from Monte Somma and from Capo.di 

 Bove, afford an instance of chemical discordance in rela- 

 tion to minerals having the same crystalline form. 



