382 Eighth Supplement to Dana's Mineralogy. 
The ratio between the metallic acids and bases, exclusive of the water is, as 1: 1°04 
own ; D 
When hot water is poured upon fragments a erepitation or one take pl 
B.B. with borax gives a reddish- ‘yellow bead while hot, which on cooling be 
comes yellow ; with salt of phosphorus is Pave Mr disoled to a greenish- elie 
bead while hot, becoming green on cooling. No reaction 
‘eid, silicates of, see Hermann’s paper in Jour. f prakt. Chem., Lxxvi, 320. 
Unaxomtostre (Hermann), see Pitchblende. 
URANOCH —This name has been given by Hermann tos * 
mineral from Joachimsthal ioe. t prakt. Chem., Ixxvi, 321). It occurs in reniform 
us masses having a metallic appearance. Fracture compact, and sli 
conchoidal, with a feeble iietaitic lustre; kee Riise at Be! between steel 
and pinch ; streak black, eated in a 
be the mineral at first gives ta vier s t sublimate He realgar, and inl 
a bl residue consisting hiefly of bismuth, uranium, tone 
Bap and iron. with nt aci eral is discolved with separation 
= / non. Ni a Dp BS Pe te Lh ei 
5°79 — 10°21 0-97 Pete 440 36:06 14-41 11°95 3:27 240 ye 
Hermann writes the formula 5(R&8i442Si-4-10F1)-LR(AsS). [Tt is quite improbe 
ble that thes composition i that = Fos a a at am Le r investigation 
we may reasonably doubt t he bonlogene tices of the substance analyzed_—é. 6.4.8] 
Vanaprnire [p. 362, II—IV Se considers the vanadinite crystals from 
Beresows k to be ps seudomorpt of pyromorphite, Struve found in the me 
Ms vanadinite crystal a portion of sina Nocell ‘yramndiphlge. The mean of 
yses gave 
RP ern) Coe Nenieny Seem Cet eal Ye ey were eT Pen = 
PbCl P FeGr =. V B 4 
G.=6863. 960 113 043 15°99 292 
represents this composition by the formula PLOL-LPw(bs, V0x) or (3 
preinyeows V-+PbCl).—(Kokscharow, Mat. Min. Russlands, iii, 44). 
Vavianrre[p. 415, III, IV].—For an article’ * Tk + seepone ee and crated 
vivianite sg Alphonse Gages, see L., E. and D ag, [4], xviii, 182. 
mile m LP Mag Tiong ag of water from the Dead Sea, by Dr. F. A, GONG 
ourram [p. 351, I-IV}—F. A .Genth has published (this Jour, [2} oe : 
253) an analysis of the wolfram which forms - ae of ot ae Li 
of lime crystals alluded to under echeelite the planes © 
+4, and 1-7, Me gr. 7-496 (at 25° C.), 
Sn F * 
a 19 tr. 19:80 5 Sia 0-32 = 10126 
corresponding to variety II. (Min. p.252), having the formula 4FeW-p3inW- 
cme booming oa typaaphio, a ter nor 
