iron one*. 249 



Worcester counties, Md., and with bog ore in Stafford 

 county, Va. 



The blue iron earth is an earthy variety, containing about 30 per 

 cent, of phosphoric acid. The mineral from Mullica Hill has been 

 called mullicite. 



Anglarite, from Anglar, France, is a similar mineral, with less phos- 

 phoric acid. 



Triphyline occurs in cleavable masses, of a greenish-gray or bluish 

 color. H=5. Gr=36. It is an anhydrous phosphate of the pro- 

 toxyds of iron, and manganese, with some lithia. From Bodenmais in 

 Bavaria, and Norwich, Mass. 



THplite. Another phosphate of iron and manganese, of brown or 

 blackish-brown color. From Limoges, in France. 



Green iron stone, (kraurite,) alluaudite, melanchlor, and beraunite, 

 are names of phosphates of the peroxyd of iron. Color of the first two, 

 dull leek-green ; structure fibrous. Luster silky. Color of the third, 

 black ; of the fourth, hyacinth-red, becoming darker on exposure. 



Cucoxene. This is a handsome species, occurring in radiated silky 

 tufts of a yellow or yellowish-brown color. H=3 — 4. Gr=3 - 38. It 

 is a phosphate of alumina and iron. It differs from wavellite, which it 

 resembles in its more yellow color and iron reactions. It also resembles 

 carpholite, but has a deeper color. It occurs on brown iron ore in 

 Bohemia. 



Carphosiderite is another yellow phosphate of iron from Greenland 

 It occurs in reniform massrs. 



ARSENATES OF IRON. 



Cube ore. Occurs in cubes of dark green to brown and red colors 

 Luster adamantine, not very distinct. Streak greenish or brownish. 

 11=25. Gr=3. It is a hydrous arsenate of the peroxyd of iron, con- 

 taining 38 per cent, of arsenic acid. From the Cornwall mines ; also 

 from France and Saxony. 



Sagpdite. Crystallizes in rhombic prisms, modified. M : M=120° 

 IOC Color pale leek-green or liver brown. Streak uncolored. Luster 

 vitreous to subadamantine. Subtransparent to nearly opaque. H= 

 35 — 4. Gr=3l — 33. Scorodite is a hydrous arsenate of the per- 

 oxyds of iron, containing 50 per cent, of arsenic acid. From Saxony, 

 Carinthia, Cornwall, and Brazil. 



It occurs in minute crystals near Edenville, N. Y., with arsenical 

 pyrites. The name of this species is from the Greek skorodon, garlic, 

 alluding to the odor before the blowpipe. 



Iron sinter is a yellowish or brownish hydrous arsenate of the peroxyd 

 of iron, containing but 30 per cent, of arsenic acid. Arseno-siderite is 

 another fibrous arsenate, containing 34 per cent, of arsenic acid. 



Syrnplesite is a blue or green mineral, supposed to be an arsenate of 

 the protoxyd of iron. Its crystals are right rhomboidal, with a perfect 

 cleavage. H=25. Gr=2.96. From Voigtland. 



Oxalate of iron. This is a soft, yellow, earthy mineral of rare oc- 

 currence. It blackens instantly in the flame of a candle. Occurs in 

 Bohemia ; it is supposed to have resulted from the decomposition of 

 succulent plants. 



