1915. 



NATURAL SCIENCES OF PHILADELPHIA. 



437 



Sulfates : 

 Tungstates : 



Halides; fluorides: 



Oxides: 



Sulfides, arsenides, etc.; basic; 



2: 1 or 1: 1: 



2:3: 



1:2: 



double: 



sulfo-salts; acidic: 



celestite, barite, gypsum 



scheelite, hiibnerite, wolframite, 

 ferberite, cuprotungstite 



fluorite 



hematite, uraninite, magnetite 



domeykite, algodonite, whitneyite, 

 horsfordite, dyscrasite, chilen- 

 ite, stiitzite, umangite, rickard- 

 ite, maucherite, temiskamite, 

 joseite, wehrlite 



argentite, hessite, petzite, galena, 

 clausthalite, aguilarite, altaite, 

 naumannite, berzelianite, lehr- 

 bachite, eucairite, zorgite, 

 crookesite ; chalcocite, stro- 

 meyerite, acanthite; sphalerite, 

 metacinnabarite, tiemannite, 

 onofrite, coloradoite, alaband- 

 . ite; cinnabar, covellite, gree- 

 nockite, wurtzite, millerite, 

 niccolite, breithauptite, pyr- 

 rhotite; realgar; polydymite, 

 beyrichite 



orpiment, stibnite, bismuthinite, 

 guanajuatite, tetradymite, mel- 

 onite 



molybdenite; hauerite, pyrite, 

 smaltite, ehloanthite, cobalt- 

 ite, gersdorffite, corynite, 

 ullmannite, sperrylite, laurite, 

 skutterudite, willy amite, mar- 

 casite, lollingite, arsenopyrite, 

 safflorite, rammelsbergite, glau- 

 codotite, alloclasite, kallilite, 

 wolfachite; sylvanite, kren- 

 nerite, nagj'agite 



bornite, linnaeite, cubanite, 

 carrollite, chalcopyrite, stan- 

 nite; sternbergite, chalmersite; 

 teallite; sulvanite 

 livingstonite, guejarite, chiviatite, 

 cuprobismutite, rezban^'ite 



