Fifth Supplement to Dana’s Mineralogy. 403 
AtacamiTe [p, 138 and I, III].—Atacamite occurs in small rhombic prisms (of the 
1 J.1-%) on malachite and quartz, at the extrac raordinary malachite docality i in the 
Serra do Bembe near Ambriz on the west coast of Africa!—Phil. Mag., [4!, xiii, 470. 
_ Avrusitez.—See Uranium Ores. 
Bary d Il/.—Dr. F. Pfaff has described a fine crystal of barytes 
. (Pogg., di, i ass) iapuiened in the direction of the brachy diagonal ‘{eemornbiing fig. 1 
p. 194 of 3d edit. of the writer’s Min.), and presenting the new planes 1-4, 7-4, and 
68. The planes arranged according to the vertical zones are O, 1-2, i-¥; i-4; 4-2, 
| 12; B41,7; 8; £2; 1-45 44, $4, 1-4, 64, 
= | -‘Bervi [ (p. 178 and II, IV]—A beryl — the Ural contains according to v, Koks- 
s ie eer ii, 356) the plane €-3; inclination of the plane*to a prismatic 
ies Seadantite of Levy from Ireland is thombohodral ”"His measurement S- 
__ tls from (1.) Cork, Ireland, (2.) eae and (3.) Mon poner Nes rach) in o n Nae 
Rau, afforded for R: R (asa mean of valyng results }—(1, 9 fh and f 
(3.) 91° 9’; the mean of all the seabed giving 91° 18’. Theo erve a ese 
are, 2, “ Jats pee -5#, The Montabaur crystals, which are semis of the 
vasy basal cleav 
s s published (Poss. Ann, , ¢, 579) analyses of the Bendantite of 
Cork, where. it occurs in small gre oetahedrons, rust-colored externally, implanted 
on limonite or iron sinter. pes ppaitient (mean of results) 
ae p o fe 
e76 0-2 4° 069 971 = 99-98 
ek ce PFT, ote Bets Hb 
oe —e ving nearly with one of the — of Dr. ae as ok he found more 
The oxygen ratio is nearly 9: : 12:9, affording the complex fomula 
: ib +9684 9OP+ of 
Sandberger also describes ggrrn (Pogg., ¢, 611) and observes that the * 
Dern crystals have the form 5R.~$R.OR, an sey R.OR, the last 0 occurring also 
ol Horhausen. R.-R.OR occurs tail the localities. Cok o clear 
We-vreen and yellowish-green; streak yellow to greenish is ( Ww, ‘Transpare nt to 
epudte. Vitreous subadamantine, H.=35. G==10018 (Dernbach). BB. on 
( I fuses, 2 opener easily, and yields a lead glob e containing a black mag- 
ie mass. The Cork and Dernbach crystals contain no arsenic, while in the Hor- 
arsenic acid al most wholly replaces the phosphoric. 
mean of results) of the Beudantite of Dernbach and Horhausen: 
~ 
6 $ 8 Fe b (on Tt 
bach, 13-22 trace “461 44:11 26°92 trate 1144=10080 
® Hen 7:34 “276 1323 19 
orhausen, 279 1251 1°70 4728 23°43 2-29) 
ie gen eral frm deduced is, PbS+P Pps As, P) + 3F e8(As, Peat [But 
we en ratio of the Ist analysis requires trimming to ae this sha 
sii 88, 508, and I, 1V].—An impure bismuth ore from Jains 
lu wre (Vo, gl's rie a Pe iei) Ae? wie S$ 7-07, Bi 32 24, Cu 
insoluble Ue rt 27°50, aso 1g0=) 
TE [p. 462, and IV].—Occurs at penne aah 2 Joach., p. 168) 
dul gra 
’ i truw- 
$ massive, of a dull mountain-green, pea y ors 
Pa hecgen ent —15. Wi th the Bismutite, her are snail 
I 
carbonate of bismuth, It is siskin- greci i and 
e crystals a re thin longish prisms, gee sluct an yet vitreous, 
Hie to Lindale oxyd at (ae uth, ‘geri arbonie on ~~ water, 
BB. fuses to a. - ai hlac k pear ari, ‘ind gives a bismuth 
coloring the coal ys oor on uning tbe 03 xydation 
