Mineralogical Notices by Prof. Meneghini. 61 
Copper glance (Chalkosine, Beud).—Analyses :— 
S Cu Fe 
b Monte > Catini, 20°50 1654 1°75 = 98°79 
17631 63°64 24296, #e 15°750, = 99-671 
" Monte Vaso, 15-734 58500 1450 “ 24 rt gangue 0°125==99'934 
15-480 57785 1333 “ 25-0 
Gs 8. Bingo, 246249 40°8925 158282 —— gangue ur 9350=99'1806 
‘9771 314370 88559 —— “ 42-1195=98:3895 
“The last two eae are only of metallurgical interest, as the 
copper glance was mixed with copper pyrites. ‘The oxy d of iron 
in the three preceding, is evidently a mechanical porte 
Chalcopyrite or ee pyrites, and E'rrubescite. —Analyses : 
Ss Gangue. 
Yaw? hi Castellina Marit. 80-072 27540 38:00 38450 = 99862 
Les er hoon 30°348 18008 43336 8624100316 
; “Val Castru 35617 34091 30292 ——=100-000 
Ry eats ~ 41306 15960 88-484 4250 100-000 
Be st 86155 32-788 29-750 0863== 99°556 
rick eect 80°092 27540 88832 3250 99-714 
Campiglia, 34-030 31300 34:670 =100-000 
. Erubescite, Mt. . Catini, 24-026 55880 18-028 
363 59-472 13-868 0-750, Fo "1500 =08958 
642 
s 2p413 59672 13868 2687 = 
Miemo, 23983 60160 15°088 ——= 99231 
Ferriccio, 24°700 60007 15889 -——=100596 
Castagno, 24108 52288 18192 4748= 99:336 
Rocea a Sillano, 20015 46700 13°700 18:350= 98-765 
21-044 46°300 15600 16500 = 99-444 
Mnte Castelli 29-081 58276 12134 7560100001 
Les Capanne Vecchie, obi 45°180 11125 25-750 100093 
ath analyses of chalcopyrite appear to lead to the formula in 
Ph meh the proportions of the two sulphurets are variable, e. g. 
won, S+5Fe* 8, Cut S+3Fe? 83, etc. Those of ite: 
a to establish for the species the single formula (Fe, €u)S, 
of several formulas containing the two sulphurets in 
Various proportions. 
Zigueline.— Analyses ; 
1. 0 Cu 
: Tig Ln Capanne Vecchie, 1122 8878 
The ba, 0°88 . 86:12 mixed with native cop. 3:00=100 
Spe sage . artes in cubes, and frequently with 
Pseudomorphs of malachite. 
ee aves. a occurs at Pereta with Stibine in small 
ular erystals. Analysis :— 
18) Sb Fe  Gangue. 
ee 43-880 1-250 0°750==100 
la und at Bottino near Serravezra, well crystal- 
in feuabsathnae and also massive. 
: $382117 Zn60-901 Fell441 Od1-226 FeS* 0°750=96-435 
ae 83°6538 48110 162382 Ouand Cd traces =97°995 
hageeeas © A( Zn, Cd) $+Fe S, or (Zn, Cd, Fe) S. 
- 
aT 
Fab ye eh nee 
eR SR RRR KAN 
