100 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



IL/drocastorite. A decomposition product of the castorite 

 of Elba, -which it surrounds as a white mealy coating. An 

 analysis by Grattarola shows it to consist of silica, alumina, 

 lime, and water. 



Ilydroniccite. (See uiccocJiromite, below.) 



Krennerite. (See bunsenine, page 157.) 



Lawrencite. A name given by M. Daubree, in honor of 

 Dr. J. Lawrence Smith, to the protochloride of iron, which 

 lie has separated from the Greenland iron. 



Ludlamite. A hydrous phosphate of iron, allied to vivian- 

 ite, occurring in small monoclinic crystals, of a clear green 

 color ; described by Field from the mines of Cornwall, Eng- 

 land. 



Magnolite. Occurs in white silky needles, having, accord- 

 ing to Dr. Genth, the composition of a tellurate of mercury. 

 Locality, Keystone Mine, Magnolia District, Col. 



Meroxene. An old name of Breithaupt, now given by 

 Tschermak to a part of the biotite micas. (See above, ano- 

 mite.) 



Microcllne. A name early given to a variety of ortho- 

 clase : it is now appropriated by M. Des Cloizeaux for a 

 feldspar identical in composition with orthoclase, but tri- 

 clinic in form. It includes the feldspar enclosing regirite 

 from Magnet Cove, Ark. ; and is intimately associated with 

 orthoclase at many localities, conspicuously so in the beau- 

 tiful amazonstone of Colorado. 



Neochrysolite. A manganesian variety of chrysolite, de- 

 scribed by Scacchi as occurring in cavities in the lava of 

 1631 at Vesuvius. 



Niccochromite. Occurs as a thin yellow coating on chro- 

 raite at Texas, Pa. ; supposed by Professor Shepard to be a 

 dichromate of nickel. Another associated mineral is regard- 

 ed as a hydrate of nickel, and the name hydroniccite is sug- 

 gested for it. 



Pelagite. A provisional name, proposed by Professor 

 Church, for the material constituting the " manganese nod- 

 ules" obtained by the Challenger in deep-sea soundings in 

 the Pacific. They contain manganese, iron, alumina, and 

 silica. 



P/iosphochro?nite. (See Elroquite, page 15S.) 



Plumbomanganite. A mineral examined and named by 



